./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi000_tso.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/rfi000_tso.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cde23df1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/rfi000_tso.i ./goblint.2024-05-21_14-57-05.files/protection/rfi000_tso.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-cde23df-m [2024-06-14 11:18:28,867 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-14 11:18:28,950 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-14 11:18:28,954 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-14 11:18:28,955 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-14 11:18:28,983 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-14 11:18:28,984 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-14 11:18:28,984 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-14 11:18:28,985 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-14 11:18:28,988 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-14 11:18:28,988 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-14 11:18:28,989 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-14 11:18:28,989 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-14 11:18:28,990 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-14 11:18:28,990 INFO L153 SettingsManager]: * Use SBE=true [2024-06-14 11:18:28,990 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-14 11:18:28,990 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-14 11:18:28,991 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-14 11:18:28,991 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-14 11:18:28,991 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-14 11:18:28,991 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-14 11:18:28,992 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-14 11:18:28,992 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-14 11:18:28,992 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-14 11:18:28,992 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-14 11:18:28,992 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-14 11:18:28,993 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-14 11:18:28,993 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-14 11:18:28,993 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-14 11:18:28,993 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-14 11:18:28,994 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-14 11:18:28,994 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-14 11:18:28,995 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 11:18:28,995 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-14 11:18:28,995 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-14 11:18:28,995 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-14 11:18:28,995 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-14 11:18:28,995 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-14 11:18:28,996 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-14 11:18:28,996 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-14 11:18:28,996 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-14 11:18:28,996 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-14 11:18:28,996 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-14 11:18:28,997 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-14 11:18:29,196 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-14 11:18:29,224 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-14 11:18:29,226 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-14 11:18:29,227 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-14 11:18:29,227 INFO L274 PluginConnector]: CDTParser initialized [2024-06-14 11:18:29,228 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi000_tso.i [2024-06-14 11:18:30,243 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-14 11:18:30,415 INFO L384 CDTParser]: Found 1 translation units. [2024-06-14 11:18:30,416 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi000_tso.i [2024-06-14 11:18:30,433 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f80ecd624/5defcb440473483f970c26a26536ca4f/FLAG0736bb12f [2024-06-14 11:18:30,442 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f80ecd624/5defcb440473483f970c26a26536ca4f [2024-06-14 11:18:30,444 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-14 11:18:30,447 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-14 11:18:30,448 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/rfi000_tso.yml/witness.yml [2024-06-14 11:18:30,571 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-14 11:18:30,571 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-14 11:18:30,572 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-14 11:18:30,572 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-14 11:18:30,576 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-14 11:18:30,577 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 11:18:30" (1/2) ... [2024-06-14 11:18:30,577 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20ee650d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:18:30, skipping insertion in model container [2024-06-14 11:18:30,578 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 11:18:30" (1/2) ... [2024-06-14 11:18:30,579 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7d0bfdea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:18:30, skipping insertion in model container [2024-06-14 11:18:30,579 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 11:18:30" (2/2) ... [2024-06-14 11:18:30,579 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20ee650d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:18:30, skipping insertion in model container [2024-06-14 11:18:30,579 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 11:18:30" (2/2) ... [2024-06-14 11:18:30,580 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-14 11:18:30,634 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-14 11:18:30,658 INFO L97 edCorrectnessWitness]: Location invariant before [L829-L829] ((((((((((((((! multithreaded || y$r_buff1_thd0 == (_Bool)0) && (! multithreaded || (((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 2) && __unbuffered_p1_EAX <= 127) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((0 <= y$mem_tmp && y$mem_tmp <= 2) && y$mem_tmp <= 127) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || (((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 2) && __unbuffered_p1_EBX <= 127) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)))) && (! multithreaded || y$read_delayed_var == 0) [2024-06-14 11:18:30,658 INFO L97 edCorrectnessWitness]: Location invariant before [L830-L830] ((((((((((((((! multithreaded || y$r_buff1_thd0 == (_Bool)0) && (! multithreaded || (((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 2) && __unbuffered_p1_EAX <= 127) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((0 <= y$mem_tmp && y$mem_tmp <= 2) && y$mem_tmp <= 127) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || (((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 2) && __unbuffered_p1_EBX <= 127) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)))) && (! multithreaded || y$read_delayed_var == 0) [2024-06-14 11:18:30,658 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-14 11:18:30,658 INFO L106 edCorrectnessWitness]: ghost_update [L827-L827] multithreaded = 1; [2024-06-14 11:18:30,705 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-14 11:18:30,991 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 11:18:31,004 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-14 11:18:31,081 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 11:18:31,110 INFO L206 MainTranslator]: Completed translation [2024-06-14 11:18:31,110 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:18:31 WrapperNode [2024-06-14 11:18:31,110 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-14 11:18:31,111 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-14 11:18:31,111 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-14 11:18:31,111 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-14 11:18:31,117 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:18:31" (1/1) ... [2024-06-14 11:18:31,142 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:18:31" (1/1) ... [2024-06-14 11:18:31,176 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 176 [2024-06-14 11:18:31,179 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-14 11:18:31,180 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-14 11:18:31,180 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-14 11:18:31,180 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-14 11:18:31,189 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:18:31" (1/1) ... [2024-06-14 11:18:31,189 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:18:31" (1/1) ... [2024-06-14 11:18:31,192 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:18:31" (1/1) ... [2024-06-14 11:18:31,203 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-14 11:18:31,214 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:18:31" (1/1) ... [2024-06-14 11:18:31,214 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:18:31" (1/1) ... [2024-06-14 11:18:31,221 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:18:31" (1/1) ... [2024-06-14 11:18:31,227 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:18:31" (1/1) ... [2024-06-14 11:18:31,229 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:18:31" (1/1) ... [2024-06-14 11:18:31,231 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:18:31" (1/1) ... [2024-06-14 11:18:31,233 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-14 11:18:31,234 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-14 11:18:31,234 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-14 11:18:31,234 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-14 11:18:31,245 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:18:31" (1/1) ... [2024-06-14 11:18:31,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 11:18:31,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 11:18:31,270 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-14 11:18:31,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-14 11:18:31,302 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-14 11:18:31,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-14 11:18:31,302 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-14 11:18:31,302 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-14 11:18:31,303 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-14 11:18:31,303 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-14 11:18:31,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-14 11:18:31,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-14 11:18:31,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-14 11:18:31,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-14 11:18:31,304 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-14 11:18:31,395 INFO L244 CfgBuilder]: Building ICFG [2024-06-14 11:18:31,396 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-14 11:18:31,696 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-14 11:18:31,696 INFO L293 CfgBuilder]: Performing block encoding [2024-06-14 11:18:31,885 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-14 11:18:31,885 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-14 11:18:31,887 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 11:18:31 BoogieIcfgContainer [2024-06-14 11:18:31,887 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-14 11:18:31,890 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-14 11:18:31,890 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-14 11:18:31,893 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-14 11:18:31,893 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.06 11:18:30" (1/4) ... [2024-06-14 11:18:31,894 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@db05d7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 11:18:31, skipping insertion in model container [2024-06-14 11:18:31,894 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 11:18:30" (2/4) ... [2024-06-14 11:18:31,895 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@db05d7f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 11:18:31, skipping insertion in model container [2024-06-14 11:18:31,895 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:18:31" (3/4) ... [2024-06-14 11:18:31,896 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@db05d7f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 11:18:31, skipping insertion in model container [2024-06-14 11:18:31,896 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 11:18:31" (4/4) ... [2024-06-14 11:18:31,897 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi000_tso.i [2024-06-14 11:18:31,909 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-14 11:18:31,910 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-14 11:18:31,910 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-14 11:18:31,945 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-14 11:18:31,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 32 transitions, 72 flow [2024-06-14 11:18:31,996 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-06-14 11:18:31,997 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 11:18:31,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 30 events. 0/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 39 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-14 11:18:31,998 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 32 transitions, 72 flow [2024-06-14 11:18:32,001 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 24 transitions, 54 flow [2024-06-14 11:18:32,017 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-14 11:18:32,022 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@35195784, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-14 11:18:32,022 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-14 11:18:32,025 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-14 11:18:32,026 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-06-14 11:18:32,026 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 11:18:32,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:32,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-14 11:18:32,027 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:18:32,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:32,031 INFO L85 PathProgramCache]: Analyzing trace with hash -400399295, now seen corresponding path program 1 times [2024-06-14 11:18:32,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:32,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645582049] [2024-06-14 11:18:32,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:32,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:32,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:32,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:32,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:32,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645582049] [2024-06-14 11:18:32,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645582049] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:32,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:32,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-14 11:18:32,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061512253] [2024-06-14 11:18:32,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:32,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 11:18:32,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:32,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 11:18:32,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 11:18:32,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:18:32,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:32,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:32,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:18:32,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:33,026 INFO L124 PetriNetUnfolderBase]: 216/387 cut-off events. [2024-06-14 11:18:33,027 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-14 11:18:33,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 790 conditions, 387 events. 216/387 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1367 event pairs, 133 based on Foata normal form. 1/383 useless extension candidates. Maximal degree in co-relation 776. Up to 378 conditions per place. [2024-06-14 11:18:33,033 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 25 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2024-06-14 11:18:33,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 125 flow [2024-06-14 11:18:33,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 11:18:33,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 11:18:33,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 48 transitions. [2024-06-14 11:18:33,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-14 11:18:33,043 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 54 flow. Second operand 3 states and 48 transitions. [2024-06-14 11:18:33,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 125 flow [2024-06-14 11:18:33,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 122 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-14 11:18:33,047 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 73 flow [2024-06-14 11:18:33,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2024-06-14 11:18:33,052 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-06-14 11:18:33,052 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 73 flow [2024-06-14 11:18:33,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:33,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:33,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:33,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-14 11:18:33,053 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:18:33,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:33,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1763365024, now seen corresponding path program 1 times [2024-06-14 11:18:33,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:33,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157967148] [2024-06-14 11:18:33,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:33,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:33,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:33,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:33,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:33,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157967148] [2024-06-14 11:18:33,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157967148] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:33,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:33,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-14 11:18:33,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800092992] [2024-06-14 11:18:33,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:33,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-14 11:18:33,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:33,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-14 11:18:33,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-14 11:18:33,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:18:33,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:33,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:33,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:18:33,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:33,594 INFO L124 PetriNetUnfolderBase]: 213/382 cut-off events. [2024-06-14 11:18:33,595 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2024-06-14 11:18:33,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 880 conditions, 382 events. 213/382 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1339 event pairs, 109 based on Foata normal form. 2/384 useless extension candidates. Maximal degree in co-relation 865. Up to 364 conditions per place. [2024-06-14 11:18:33,597 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 29 selfloop transitions, 5 changer transitions 0/36 dead transitions. [2024-06-14 11:18:33,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 167 flow [2024-06-14 11:18:33,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 11:18:33,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 11:18:33,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 60 transitions. [2024-06-14 11:18:33,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-14 11:18:33,599 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 73 flow. Second operand 4 states and 60 transitions. [2024-06-14 11:18:33,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 167 flow [2024-06-14 11:18:33,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 164 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 11:18:33,601 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 97 flow [2024-06-14 11:18:33,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2024-06-14 11:18:33,602 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2024-06-14 11:18:33,602 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 97 flow [2024-06-14 11:18:33,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:33,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:33,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:33,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-14 11:18:33,603 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:18:33,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:33,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1170258078, now seen corresponding path program 1 times [2024-06-14 11:18:33,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:33,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980064463] [2024-06-14 11:18:33,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:33,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:33,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:33,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:33,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:33,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980064463] [2024-06-14 11:18:33,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980064463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:33,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:33,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 11:18:33,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154420005] [2024-06-14 11:18:33,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:33,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 11:18:33,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:33,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 11:18:33,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-14 11:18:33,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:18:33,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:33,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:33,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:18:33,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:34,078 INFO L124 PetriNetUnfolderBase]: 215/386 cut-off events. [2024-06-14 11:18:34,079 INFO L125 PetriNetUnfolderBase]: For 224/224 co-relation queries the response was YES. [2024-06-14 11:18:34,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 975 conditions, 386 events. 215/386 cut-off events. For 224/224 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1365 event pairs, 53 based on Foata normal form. 6/392 useless extension candidates. Maximal degree in co-relation 958. Up to 320 conditions per place. [2024-06-14 11:18:34,081 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 39 selfloop transitions, 11 changer transitions 0/52 dead transitions. [2024-06-14 11:18:34,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 52 transitions, 267 flow [2024-06-14 11:18:34,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 11:18:34,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 11:18:34,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 80 transitions. [2024-06-14 11:18:34,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-14 11:18:34,089 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 97 flow. Second operand 5 states and 80 transitions. [2024-06-14 11:18:34,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 52 transitions, 267 flow [2024-06-14 11:18:34,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 52 transitions, 258 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-14 11:18:34,092 INFO L231 Difference]: Finished difference. Result has 40 places, 36 transitions, 164 flow [2024-06-14 11:18:34,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=164, PETRI_PLACES=40, PETRI_TRANSITIONS=36} [2024-06-14 11:18:34,094 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2024-06-14 11:18:34,094 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 36 transitions, 164 flow [2024-06-14 11:18:34,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:34,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:34,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:34,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-14 11:18:34,095 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:18:34,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:34,096 INFO L85 PathProgramCache]: Analyzing trace with hash 663452449, now seen corresponding path program 1 times [2024-06-14 11:18:34,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:34,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120553154] [2024-06-14 11:18:34,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:34,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:34,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:34,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:34,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:34,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120553154] [2024-06-14 11:18:34,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120553154] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:34,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:34,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:18:34,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898501217] [2024-06-14 11:18:34,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:34,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:18:34,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:34,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:18:34,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:18:35,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:18:35,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 36 transitions, 164 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:35,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:35,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:18:35,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:35,175 INFO L124 PetriNetUnfolderBase]: 216/389 cut-off events. [2024-06-14 11:18:35,175 INFO L125 PetriNetUnfolderBase]: For 484/484 co-relation queries the response was YES. [2024-06-14 11:18:35,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1171 conditions, 389 events. 216/389 cut-off events. For 484/484 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1380 event pairs, 28 based on Foata normal form. 6/395 useless extension candidates. Maximal degree in co-relation 1151. Up to 297 conditions per place. [2024-06-14 11:18:35,177 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 39 selfloop transitions, 13 changer transitions 0/54 dead transitions. [2024-06-14 11:18:35,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 54 transitions, 318 flow [2024-06-14 11:18:35,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:18:35,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:18:35,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 88 transitions. [2024-06-14 11:18:35,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-14 11:18:35,179 INFO L175 Difference]: Start difference. First operand has 40 places, 36 transitions, 164 flow. Second operand 6 states and 88 transitions. [2024-06-14 11:18:35,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 54 transitions, 318 flow [2024-06-14 11:18:35,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 54 transitions, 314 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-14 11:18:35,188 INFO L231 Difference]: Finished difference. Result has 45 places, 36 transitions, 189 flow [2024-06-14 11:18:35,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=189, PETRI_PLACES=45, PETRI_TRANSITIONS=36} [2024-06-14 11:18:35,189 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 14 predicate places. [2024-06-14 11:18:35,189 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 36 transitions, 189 flow [2024-06-14 11:18:35,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:35,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:35,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:35,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-14 11:18:35,190 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:18:35,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:35,191 INFO L85 PathProgramCache]: Analyzing trace with hash 163026754, now seen corresponding path program 1 times [2024-06-14 11:18:35,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:35,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372269509] [2024-06-14 11:18:35,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:35,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:35,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:35,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:35,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:35,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372269509] [2024-06-14 11:18:35,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372269509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:35,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:35,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 11:18:35,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839743199] [2024-06-14 11:18:35,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:35,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 11:18:35,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:35,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 11:18:35,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-14 11:18:35,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:18:35,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 36 transitions, 189 flow. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:35,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:35,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:18:35,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:35,811 INFO L124 PetriNetUnfolderBase]: 214/386 cut-off events. [2024-06-14 11:18:35,811 INFO L125 PetriNetUnfolderBase]: For 686/686 co-relation queries the response was YES. [2024-06-14 11:18:35,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1266 conditions, 386 events. 214/386 cut-off events. For 686/686 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1364 event pairs, 77 based on Foata normal form. 1/387 useless extension candidates. Maximal degree in co-relation 1243. Up to 374 conditions per place. [2024-06-14 11:18:35,813 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 33 selfloop transitions, 6 changer transitions 0/41 dead transitions. [2024-06-14 11:18:35,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 41 transitions, 279 flow [2024-06-14 11:18:35,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 11:18:35,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 11:18:35,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 56 transitions. [2024-06-14 11:18:35,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-14 11:18:35,815 INFO L175 Difference]: Start difference. First operand has 45 places, 36 transitions, 189 flow. Second operand 5 states and 56 transitions. [2024-06-14 11:18:35,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 41 transitions, 279 flow [2024-06-14 11:18:35,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 41 transitions, 248 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-14 11:18:35,819 INFO L231 Difference]: Finished difference. Result has 46 places, 36 transitions, 175 flow [2024-06-14 11:18:35,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=175, PETRI_PLACES=46, PETRI_TRANSITIONS=36} [2024-06-14 11:18:35,821 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 15 predicate places. [2024-06-14 11:18:35,823 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 36 transitions, 175 flow [2024-06-14 11:18:35,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:35,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:35,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:35,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-14 11:18:35,828 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:18:35,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:35,829 INFO L85 PathProgramCache]: Analyzing trace with hash 747764070, now seen corresponding path program 1 times [2024-06-14 11:18:35,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:35,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229651699] [2024-06-14 11:18:35,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:35,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:35,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:36,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:36,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:36,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229651699] [2024-06-14 11:18:36,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229651699] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:36,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:36,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:18:36,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602871492] [2024-06-14 11:18:36,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:36,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:18:36,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:36,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:18:36,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:18:36,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:18:36,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 36 transitions, 175 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:36,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:36,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:18:36,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:36,482 INFO L124 PetriNetUnfolderBase]: 212/383 cut-off events. [2024-06-14 11:18:36,482 INFO L125 PetriNetUnfolderBase]: For 810/810 co-relation queries the response was YES. [2024-06-14 11:18:36,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1244 conditions, 383 events. 212/383 cut-off events. For 810/810 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1347 event pairs, 76 based on Foata normal form. 1/384 useless extension candidates. Maximal degree in co-relation 1219. Up to 368 conditions per place. [2024-06-14 11:18:36,485 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 34 selfloop transitions, 8 changer transitions 0/44 dead transitions. [2024-06-14 11:18:36,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 44 transitions, 281 flow [2024-06-14 11:18:36,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:18:36,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:18:36,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 64 transitions. [2024-06-14 11:18:36,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 11:18:36,488 INFO L175 Difference]: Start difference. First operand has 46 places, 36 transitions, 175 flow. Second operand 6 states and 64 transitions. [2024-06-14 11:18:36,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 44 transitions, 281 flow [2024-06-14 11:18:36,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 44 transitions, 266 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-14 11:18:36,490 INFO L231 Difference]: Finished difference. Result has 48 places, 38 transitions, 193 flow [2024-06-14 11:18:36,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=193, PETRI_PLACES=48, PETRI_TRANSITIONS=38} [2024-06-14 11:18:36,492 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 17 predicate places. [2024-06-14 11:18:36,492 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 38 transitions, 193 flow [2024-06-14 11:18:36,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:36,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:36,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:36,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-14 11:18:36,493 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:18:36,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:36,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1700129407, now seen corresponding path program 1 times [2024-06-14 11:18:36,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:36,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606195438] [2024-06-14 11:18:36,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:36,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:36,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:36,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:36,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:36,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606195438] [2024-06-14 11:18:36,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606195438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:36,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:36,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:18:36,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896198598] [2024-06-14 11:18:36,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:36,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:18:36,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:36,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:18:36,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:18:36,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:18:36,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 38 transitions, 193 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:36,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:36,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:18:36,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:37,225 INFO L124 PetriNetUnfolderBase]: 211/382 cut-off events. [2024-06-14 11:18:37,226 INFO L125 PetriNetUnfolderBase]: For 1022/1022 co-relation queries the response was YES. [2024-06-14 11:18:37,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1312 conditions, 382 events. 211/382 cut-off events. For 1022/1022 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1356 event pairs, 53 based on Foata normal form. 3/385 useless extension candidates. Maximal degree in co-relation 1287. Up to 318 conditions per place. [2024-06-14 11:18:37,228 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 37 selfloop transitions, 13 changer transitions 0/52 dead transitions. [2024-06-14 11:18:37,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 52 transitions, 346 flow [2024-06-14 11:18:37,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:18:37,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:18:37,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 74 transitions. [2024-06-14 11:18:37,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-14 11:18:37,230 INFO L175 Difference]: Start difference. First operand has 48 places, 38 transitions, 193 flow. Second operand 6 states and 74 transitions. [2024-06-14 11:18:37,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 52 transitions, 346 flow [2024-06-14 11:18:37,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 52 transitions, 329 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-14 11:18:37,233 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 224 flow [2024-06-14 11:18:37,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=224, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2024-06-14 11:18:37,234 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 19 predicate places. [2024-06-14 11:18:37,235 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 224 flow [2024-06-14 11:18:37,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:37,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:37,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:37,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-14 11:18:37,235 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:18:37,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:37,236 INFO L85 PathProgramCache]: Analyzing trace with hash 2049929377, now seen corresponding path program 2 times [2024-06-14 11:18:37,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:37,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463728338] [2024-06-14 11:18:37,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:37,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:37,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:37,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:37,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:37,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463728338] [2024-06-14 11:18:37,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463728338] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:37,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:37,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:18:37,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872731690] [2024-06-14 11:18:37,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:37,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:18:37,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:37,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:18:37,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:18:37,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:18:37,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 224 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:37,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:37,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:18:37,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:37,892 INFO L124 PetriNetUnfolderBase]: 206/374 cut-off events. [2024-06-14 11:18:37,892 INFO L125 PetriNetUnfolderBase]: For 1294/1294 co-relation queries the response was YES. [2024-06-14 11:18:37,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1345 conditions, 374 events. 206/374 cut-off events. For 1294/1294 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1309 event pairs, 66 based on Foata normal form. 1/374 useless extension candidates. Maximal degree in co-relation 1319. Up to 311 conditions per place. [2024-06-14 11:18:37,894 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 32 selfloop transitions, 14 changer transitions 0/48 dead transitions. [2024-06-14 11:18:37,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 48 transitions, 334 flow [2024-06-14 11:18:37,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:18:37,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:18:37,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 71 transitions. [2024-06-14 11:18:37,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3697916666666667 [2024-06-14 11:18:37,896 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 224 flow. Second operand 6 states and 71 transitions. [2024-06-14 11:18:37,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 48 transitions, 334 flow [2024-06-14 11:18:37,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 48 transitions, 319 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-14 11:18:37,898 INFO L231 Difference]: Finished difference. Result has 53 places, 40 transitions, 242 flow [2024-06-14 11:18:37,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=242, PETRI_PLACES=53, PETRI_TRANSITIONS=40} [2024-06-14 11:18:37,898 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 22 predicate places. [2024-06-14 11:18:37,899 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 40 transitions, 242 flow [2024-06-14 11:18:37,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:37,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:37,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:37,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-14 11:18:37,899 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:18:37,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:37,900 INFO L85 PathProgramCache]: Analyzing trace with hash 2038318823, now seen corresponding path program 1 times [2024-06-14 11:18:37,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:37,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75197552] [2024-06-14 11:18:37,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:37,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:37,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:38,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:38,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:38,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75197552] [2024-06-14 11:18:38,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75197552] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:38,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:38,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:18:38,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255449780] [2024-06-14 11:18:38,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:38,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:18:38,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:38,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:18:38,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:18:38,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:18:38,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 40 transitions, 242 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:38,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:38,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:18:38,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:38,701 INFO L124 PetriNetUnfolderBase]: 204/369 cut-off events. [2024-06-14 11:18:38,701 INFO L125 PetriNetUnfolderBase]: For 1526/1526 co-relation queries the response was YES. [2024-06-14 11:18:38,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1380 conditions, 369 events. 204/369 cut-off events. For 1526/1526 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1300 event pairs, 71 based on Foata normal form. 1/370 useless extension candidates. Maximal degree in co-relation 1353. Up to 351 conditions per place. [2024-06-14 11:18:38,704 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 37 selfloop transitions, 10 changer transitions 0/49 dead transitions. [2024-06-14 11:18:38,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 49 transitions, 362 flow [2024-06-14 11:18:38,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:18:38,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:18:38,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 72 transitions. [2024-06-14 11:18:38,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32142857142857145 [2024-06-14 11:18:38,705 INFO L175 Difference]: Start difference. First operand has 53 places, 40 transitions, 242 flow. Second operand 7 states and 72 transitions. [2024-06-14 11:18:38,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 49 transitions, 362 flow [2024-06-14 11:18:38,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 49 transitions, 316 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-14 11:18:38,707 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 235 flow [2024-06-14 11:18:38,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=235, PETRI_PLACES=54, PETRI_TRANSITIONS=42} [2024-06-14 11:18:38,708 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 23 predicate places. [2024-06-14 11:18:38,708 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 235 flow [2024-06-14 11:18:38,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:38,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:38,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:38,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-14 11:18:38,709 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:18:38,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:38,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1164405607, now seen corresponding path program 1 times [2024-06-14 11:18:38,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:38,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217570746] [2024-06-14 11:18:38,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:38,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:38,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:39,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:39,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:39,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217570746] [2024-06-14 11:18:39,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217570746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:39,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:39,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:18:39,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974967403] [2024-06-14 11:18:39,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:39,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:18:39,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:39,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:18:39,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:18:39,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:18:39,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 235 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:39,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:39,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:18:39,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:39,469 INFO L124 PetriNetUnfolderBase]: 213/385 cut-off events. [2024-06-14 11:18:39,469 INFO L125 PetriNetUnfolderBase]: For 1865/1865 co-relation queries the response was YES. [2024-06-14 11:18:39,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1451 conditions, 385 events. 213/385 cut-off events. For 1865/1865 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1372 event pairs, 56 based on Foata normal form. 3/388 useless extension candidates. Maximal degree in co-relation 1423. Up to 314 conditions per place. [2024-06-14 11:18:39,471 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 39 selfloop transitions, 20 changer transitions 0/61 dead transitions. [2024-06-14 11:18:39,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 61 transitions, 415 flow [2024-06-14 11:18:39,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:18:39,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:18:39,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2024-06-14 11:18:39,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36607142857142855 [2024-06-14 11:18:39,472 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 235 flow. Second operand 7 states and 82 transitions. [2024-06-14 11:18:39,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 61 transitions, 415 flow [2024-06-14 11:18:39,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 61 transitions, 392 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-14 11:18:39,475 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 319 flow [2024-06-14 11:18:39,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=319, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2024-06-14 11:18:39,476 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 27 predicate places. [2024-06-14 11:18:39,476 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 319 flow [2024-06-14 11:18:39,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:39,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:39,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:39,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-14 11:18:39,477 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:18:39,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:39,477 INFO L85 PathProgramCache]: Analyzing trace with hash -876697211, now seen corresponding path program 2 times [2024-06-14 11:18:39,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:39,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279539937] [2024-06-14 11:18:39,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:39,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:39,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:39,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:39,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:39,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279539937] [2024-06-14 11:18:39,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279539937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:39,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:39,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:18:39,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158636478] [2024-06-14 11:18:39,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:39,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:18:39,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:39,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:18:39,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:18:39,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:18:39,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 319 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:39,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:39,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:18:39,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:40,154 INFO L124 PetriNetUnfolderBase]: 216/391 cut-off events. [2024-06-14 11:18:40,155 INFO L125 PetriNetUnfolderBase]: For 2310/2312 co-relation queries the response was YES. [2024-06-14 11:18:40,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1669 conditions, 391 events. 216/391 cut-off events. For 2310/2312 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1395 event pairs, 63 based on Foata normal form. 1/392 useless extension candidates. Maximal degree in co-relation 1638. Up to 325 conditions per place. [2024-06-14 11:18:40,157 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 38 selfloop transitions, 19 changer transitions 0/59 dead transitions. [2024-06-14 11:18:40,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 59 transitions, 463 flow [2024-06-14 11:18:40,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:18:40,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:18:40,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-14 11:18:40,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35267857142857145 [2024-06-14 11:18:40,158 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 319 flow. Second operand 7 states and 79 transitions. [2024-06-14 11:18:40,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 59 transitions, 463 flow [2024-06-14 11:18:40,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 59 transitions, 442 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-14 11:18:40,162 INFO L231 Difference]: Finished difference. Result has 63 places, 52 transitions, 359 flow [2024-06-14 11:18:40,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=359, PETRI_PLACES=63, PETRI_TRANSITIONS=52} [2024-06-14 11:18:40,163 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 32 predicate places. [2024-06-14 11:18:40,163 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 52 transitions, 359 flow [2024-06-14 11:18:40,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:40,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:40,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:40,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-14 11:18:40,163 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:18:40,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:40,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1236633251, now seen corresponding path program 3 times [2024-06-14 11:18:40,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:40,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825460375] [2024-06-14 11:18:40,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:40,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:40,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:40,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:40,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:40,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825460375] [2024-06-14 11:18:40,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825460375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:40,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:40,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:18:40,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562404689] [2024-06-14 11:18:40,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:40,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:18:40,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:40,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:18:40,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:18:40,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:18:40,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 52 transitions, 359 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:40,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:40,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:18:40,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:40,931 INFO L124 PetriNetUnfolderBase]: 219/396 cut-off events. [2024-06-14 11:18:40,932 INFO L125 PetriNetUnfolderBase]: For 2841/2843 co-relation queries the response was YES. [2024-06-14 11:18:40,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1762 conditions, 396 events. 219/396 cut-off events. For 2841/2843 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1415 event pairs, 62 based on Foata normal form. 1/397 useless extension candidates. Maximal degree in co-relation 1729. Up to 311 conditions per place. [2024-06-14 11:18:40,935 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 36 selfloop transitions, 27 changer transitions 0/65 dead transitions. [2024-06-14 11:18:40,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 65 transitions, 563 flow [2024-06-14 11:18:40,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:18:40,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:18:40,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-06-14 11:18:40,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3705357142857143 [2024-06-14 11:18:40,937 INFO L175 Difference]: Start difference. First operand has 63 places, 52 transitions, 359 flow. Second operand 7 states and 83 transitions. [2024-06-14 11:18:40,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 65 transitions, 563 flow [2024-06-14 11:18:40,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 65 transitions, 518 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-14 11:18:40,941 INFO L231 Difference]: Finished difference. Result has 66 places, 56 transitions, 424 flow [2024-06-14 11:18:40,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=424, PETRI_PLACES=66, PETRI_TRANSITIONS=56} [2024-06-14 11:18:40,942 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 35 predicate places. [2024-06-14 11:18:40,942 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 56 transitions, 424 flow [2024-06-14 11:18:40,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:40,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:40,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:40,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-14 11:18:40,943 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:18:40,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:40,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1236624323, now seen corresponding path program 1 times [2024-06-14 11:18:40,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:40,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121639863] [2024-06-14 11:18:40,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:40,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:40,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:42,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:42,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:42,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121639863] [2024-06-14 11:18:42,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121639863] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:42,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:42,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:18:42,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699910506] [2024-06-14 11:18:42,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:42,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:18:42,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:42,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:18:42,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:18:42,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:18:42,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 56 transitions, 424 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:42,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:42,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:18:42,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:42,564 INFO L124 PetriNetUnfolderBase]: 217/391 cut-off events. [2024-06-14 11:18:42,564 INFO L125 PetriNetUnfolderBase]: For 3237/3237 co-relation queries the response was YES. [2024-06-14 11:18:42,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1863 conditions, 391 events. 217/391 cut-off events. For 3237/3237 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1372 event pairs, 47 based on Foata normal form. 1/392 useless extension candidates. Maximal degree in co-relation 1828. Up to 366 conditions per place. [2024-06-14 11:18:42,567 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 53 selfloop transitions, 14 changer transitions 0/69 dead transitions. [2024-06-14 11:18:42,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 69 transitions, 626 flow [2024-06-14 11:18:42,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:18:42,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:18:42,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 82 transitions. [2024-06-14 11:18:42,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3203125 [2024-06-14 11:18:42,568 INFO L175 Difference]: Start difference. First operand has 66 places, 56 transitions, 424 flow. Second operand 8 states and 82 transitions. [2024-06-14 11:18:42,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 69 transitions, 626 flow [2024-06-14 11:18:42,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 69 transitions, 587 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-14 11:18:42,572 INFO L231 Difference]: Finished difference. Result has 72 places, 60 transitions, 454 flow [2024-06-14 11:18:42,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=454, PETRI_PLACES=72, PETRI_TRANSITIONS=60} [2024-06-14 11:18:42,572 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 41 predicate places. [2024-06-14 11:18:42,573 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 60 transitions, 454 flow [2024-06-14 11:18:42,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:42,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:42,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:42,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-14 11:18:42,573 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:18:42,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:42,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1305882237, now seen corresponding path program 1 times [2024-06-14 11:18:42,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:42,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98635092] [2024-06-14 11:18:42,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:42,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:42,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:43,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:43,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:43,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98635092] [2024-06-14 11:18:43,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98635092] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:43,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:43,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:18:43,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108108700] [2024-06-14 11:18:43,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:43,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:18:43,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:43,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:18:43,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:18:43,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:18:43,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 60 transitions, 454 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:43,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:43,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:18:43,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:43,286 INFO L124 PetriNetUnfolderBase]: 223/402 cut-off events. [2024-06-14 11:18:43,287 INFO L125 PetriNetUnfolderBase]: For 3777/3777 co-relation queries the response was YES. [2024-06-14 11:18:43,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1998 conditions, 402 events. 223/402 cut-off events. For 3777/3777 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1441 event pairs, 55 based on Foata normal form. 2/404 useless extension candidates. Maximal degree in co-relation 1960. Up to 334 conditions per place. [2024-06-14 11:18:43,289 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 54 selfloop transitions, 20 changer transitions 0/76 dead transitions. [2024-06-14 11:18:43,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 76 transitions, 658 flow [2024-06-14 11:18:43,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:18:43,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:18:43,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 84 transitions. [2024-06-14 11:18:43,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 11:18:43,290 INFO L175 Difference]: Start difference. First operand has 72 places, 60 transitions, 454 flow. Second operand 7 states and 84 transitions. [2024-06-14 11:18:43,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 76 transitions, 658 flow [2024-06-14 11:18:43,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 76 transitions, 631 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-14 11:18:43,295 INFO L231 Difference]: Finished difference. Result has 74 places, 62 transitions, 494 flow [2024-06-14 11:18:43,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=494, PETRI_PLACES=74, PETRI_TRANSITIONS=62} [2024-06-14 11:18:43,295 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 43 predicate places. [2024-06-14 11:18:43,295 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 62 transitions, 494 flow [2024-06-14 11:18:43,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:43,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:43,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:43,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-14 11:18:43,296 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:18:43,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:43,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1736837022, now seen corresponding path program 1 times [2024-06-14 11:18:43,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:43,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057236445] [2024-06-14 11:18:43,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:43,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:43,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:43,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:43,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:43,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057236445] [2024-06-14 11:18:43,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057236445] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:43,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:43,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:18:43,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34898377] [2024-06-14 11:18:43,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:43,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:18:43,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:43,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:18:43,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:18:43,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:18:43,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 62 transitions, 494 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:43,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:43,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:18:43,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:44,214 INFO L124 PetriNetUnfolderBase]: 232/417 cut-off events. [2024-06-14 11:18:44,215 INFO L125 PetriNetUnfolderBase]: For 4411/4411 co-relation queries the response was YES. [2024-06-14 11:18:44,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2154 conditions, 417 events. 232/417 cut-off events. For 4411/4411 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1507 event pairs, 53 based on Foata normal form. 3/420 useless extension candidates. Maximal degree in co-relation 2115. Up to 335 conditions per place. [2024-06-14 11:18:44,217 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 53 selfloop transitions, 23 changer transitions 0/78 dead transitions. [2024-06-14 11:18:44,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 78 transitions, 710 flow [2024-06-14 11:18:44,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:18:44,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:18:44,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-14 11:18:44,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-14 11:18:44,218 INFO L175 Difference]: Start difference. First operand has 74 places, 62 transitions, 494 flow. Second operand 8 states and 92 transitions. [2024-06-14 11:18:44,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 78 transitions, 710 flow [2024-06-14 11:18:44,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 78 transitions, 657 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-14 11:18:44,224 INFO L231 Difference]: Finished difference. Result has 77 places, 65 transitions, 525 flow [2024-06-14 11:18:44,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=525, PETRI_PLACES=77, PETRI_TRANSITIONS=65} [2024-06-14 11:18:44,225 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 46 predicate places. [2024-06-14 11:18:44,225 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 65 transitions, 525 flow [2024-06-14 11:18:44,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:44,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:44,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:44,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-14 11:18:44,225 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:18:44,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:44,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1305887817, now seen corresponding path program 2 times [2024-06-14 11:18:44,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:44,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324461361] [2024-06-14 11:18:44,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:44,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:44,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:44,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:44,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:44,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324461361] [2024-06-14 11:18:44,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324461361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:44,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:44,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:18:44,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547591508] [2024-06-14 11:18:44,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:44,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:18:44,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:44,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:18:44,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:18:44,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:18:44,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 65 transitions, 525 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:44,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:44,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:18:44,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:44,935 INFO L124 PetriNetUnfolderBase]: 238/427 cut-off events. [2024-06-14 11:18:44,936 INFO L125 PetriNetUnfolderBase]: For 4913/4913 co-relation queries the response was YES. [2024-06-14 11:18:44,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2291 conditions, 427 events. 238/427 cut-off events. For 4913/4913 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1557 event pairs, 53 based on Foata normal form. 2/429 useless extension candidates. Maximal degree in co-relation 2251. Up to 339 conditions per place. [2024-06-14 11:18:44,939 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 54 selfloop transitions, 23 changer transitions 0/79 dead transitions. [2024-06-14 11:18:44,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 79 transitions, 739 flow [2024-06-14 11:18:44,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:18:44,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:18:44,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2024-06-14 11:18:44,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36607142857142855 [2024-06-14 11:18:44,940 INFO L175 Difference]: Start difference. First operand has 77 places, 65 transitions, 525 flow. Second operand 7 states and 82 transitions. [2024-06-14 11:18:44,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 79 transitions, 739 flow [2024-06-14 11:18:44,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 79 transitions, 677 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-14 11:18:44,946 INFO L231 Difference]: Finished difference. Result has 78 places, 67 transitions, 543 flow [2024-06-14 11:18:44,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=543, PETRI_PLACES=78, PETRI_TRANSITIONS=67} [2024-06-14 11:18:44,947 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 47 predicate places. [2024-06-14 11:18:44,948 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 67 transitions, 543 flow [2024-06-14 11:18:44,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:44,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:44,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:44,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-14 11:18:44,948 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:18:44,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:44,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1400456542, now seen corresponding path program 2 times [2024-06-14 11:18:44,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:44,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315669631] [2024-06-14 11:18:44,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:44,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:44,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:45,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:45,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:45,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315669631] [2024-06-14 11:18:45,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315669631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:45,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:45,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:18:45,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224366040] [2024-06-14 11:18:45,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:45,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:18:45,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:45,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:18:45,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:18:45,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:18:45,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 67 transitions, 543 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:45,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:45,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:18:45,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:45,791 INFO L124 PetriNetUnfolderBase]: 241/433 cut-off events. [2024-06-14 11:18:45,791 INFO L125 PetriNetUnfolderBase]: For 5511/5513 co-relation queries the response was YES. [2024-06-14 11:18:45,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2372 conditions, 433 events. 241/433 cut-off events. For 5511/5513 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1583 event pairs, 59 based on Foata normal form. 1/434 useless extension candidates. Maximal degree in co-relation 2331. Up to 345 conditions per place. [2024-06-14 11:18:45,794 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 48 selfloop transitions, 29 changer transitions 0/79 dead transitions. [2024-06-14 11:18:45,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 79 transitions, 775 flow [2024-06-14 11:18:45,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:18:45,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:18:45,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-14 11:18:45,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35546875 [2024-06-14 11:18:45,795 INFO L175 Difference]: Start difference. First operand has 78 places, 67 transitions, 543 flow. Second operand 8 states and 91 transitions. [2024-06-14 11:18:45,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 79 transitions, 775 flow [2024-06-14 11:18:45,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 79 transitions, 713 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-14 11:18:45,801 INFO L231 Difference]: Finished difference. Result has 81 places, 69 transitions, 568 flow [2024-06-14 11:18:45,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=568, PETRI_PLACES=81, PETRI_TRANSITIONS=69} [2024-06-14 11:18:45,802 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 50 predicate places. [2024-06-14 11:18:45,802 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 69 transitions, 568 flow [2024-06-14 11:18:45,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:45,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:45,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:45,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-14 11:18:45,803 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:18:45,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:45,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1362020450, now seen corresponding path program 3 times [2024-06-14 11:18:45,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:45,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420952110] [2024-06-14 11:18:45,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:45,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:45,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:46,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:46,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:46,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420952110] [2024-06-14 11:18:46,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420952110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:46,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:46,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:18:46,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428222935] [2024-06-14 11:18:46,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:46,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:18:46,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:46,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:18:46,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:18:46,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:18:46,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 69 transitions, 568 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:46,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:46,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:18:46,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:46,616 INFO L124 PetriNetUnfolderBase]: 244/438 cut-off events. [2024-06-14 11:18:46,616 INFO L125 PetriNetUnfolderBase]: For 6147/6149 co-relation queries the response was YES. [2024-06-14 11:18:46,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2448 conditions, 438 events. 244/438 cut-off events. For 6147/6149 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1592 event pairs, 62 based on Foata normal form. 1/439 useless extension candidates. Maximal degree in co-relation 2406. Up to 369 conditions per place. [2024-06-14 11:18:46,619 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 56 selfloop transitions, 21 changer transitions 0/79 dead transitions. [2024-06-14 11:18:46,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 79 transitions, 764 flow [2024-06-14 11:18:46,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:18:46,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:18:46,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-14 11:18:46,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33984375 [2024-06-14 11:18:46,621 INFO L175 Difference]: Start difference. First operand has 81 places, 69 transitions, 568 flow. Second operand 8 states and 87 transitions. [2024-06-14 11:18:46,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 79 transitions, 764 flow [2024-06-14 11:18:46,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 79 transitions, 693 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-14 11:18:46,629 INFO L231 Difference]: Finished difference. Result has 83 places, 71 transitions, 572 flow [2024-06-14 11:18:46,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=497, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=572, PETRI_PLACES=83, PETRI_TRANSITIONS=71} [2024-06-14 11:18:46,629 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 52 predicate places. [2024-06-14 11:18:46,630 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 71 transitions, 572 flow [2024-06-14 11:18:46,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:46,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:46,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:46,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-14 11:18:46,632 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:18:46,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:46,632 INFO L85 PathProgramCache]: Analyzing trace with hash 319076239, now seen corresponding path program 3 times [2024-06-14 11:18:46,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:46,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765171773] [2024-06-14 11:18:46,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:46,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:46,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:47,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:47,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:47,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765171773] [2024-06-14 11:18:47,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765171773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:47,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:47,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:18:47,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390650881] [2024-06-14 11:18:47,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:47,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:18:47,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:47,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:18:47,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:18:47,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:18:47,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 71 transitions, 572 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:47,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:47,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:18:47,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:47,271 INFO L124 PetriNetUnfolderBase]: 245/440 cut-off events. [2024-06-14 11:18:47,271 INFO L125 PetriNetUnfolderBase]: For 6920/6922 co-relation queries the response was YES. [2024-06-14 11:18:47,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2484 conditions, 440 events. 245/440 cut-off events. For 6920/6922 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1627 event pairs, 64 based on Foata normal form. 2/442 useless extension candidates. Maximal degree in co-relation 2441. Up to 331 conditions per place. [2024-06-14 11:18:47,275 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 56 selfloop transitions, 27 changer transitions 0/85 dead transitions. [2024-06-14 11:18:47,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 85 transitions, 860 flow [2024-06-14 11:18:47,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:18:47,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:18:47,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-14 11:18:47,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36160714285714285 [2024-06-14 11:18:47,278 INFO L175 Difference]: Start difference. First operand has 83 places, 71 transitions, 572 flow. Second operand 7 states and 81 transitions. [2024-06-14 11:18:47,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 85 transitions, 860 flow [2024-06-14 11:18:47,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 85 transitions, 801 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-14 11:18:47,286 INFO L231 Difference]: Finished difference. Result has 84 places, 75 transitions, 632 flow [2024-06-14 11:18:47,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=513, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=632, PETRI_PLACES=84, PETRI_TRANSITIONS=75} [2024-06-14 11:18:47,287 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 53 predicate places. [2024-06-14 11:18:47,287 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 75 transitions, 632 flow [2024-06-14 11:18:47,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:47,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:47,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:47,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-14 11:18:47,287 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:18:47,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:47,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1400189632, now seen corresponding path program 4 times [2024-06-14 11:18:47,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:47,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482843726] [2024-06-14 11:18:47,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:47,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:47,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:47,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:47,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:47,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482843726] [2024-06-14 11:18:47,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482843726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:47,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:47,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:18:47,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222706410] [2024-06-14 11:18:47,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:47,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:18:47,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:47,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:18:47,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:18:47,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:18:47,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 75 transitions, 632 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:47,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:47,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:18:47,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:48,102 INFO L124 PetriNetUnfolderBase]: 243/435 cut-off events. [2024-06-14 11:18:48,103 INFO L125 PetriNetUnfolderBase]: For 7180/7180 co-relation queries the response was YES. [2024-06-14 11:18:48,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2515 conditions, 435 events. 243/435 cut-off events. For 7180/7180 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1586 event pairs, 48 based on Foata normal form. 1/436 useless extension candidates. Maximal degree in co-relation 2471. Up to 414 conditions per place. [2024-06-14 11:18:48,106 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 71 selfloop transitions, 12 changer transitions 0/85 dead transitions. [2024-06-14 11:18:48,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 85 transitions, 844 flow [2024-06-14 11:18:48,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:18:48,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:18:48,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 80 transitions. [2024-06-14 11:18:48,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-14 11:18:48,107 INFO L175 Difference]: Start difference. First operand has 84 places, 75 transitions, 632 flow. Second operand 8 states and 80 transitions. [2024-06-14 11:18:48,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 85 transitions, 844 flow [2024-06-14 11:18:48,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 85 transitions, 800 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-14 11:18:48,114 INFO L231 Difference]: Finished difference. Result has 89 places, 77 transitions, 649 flow [2024-06-14 11:18:48,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=649, PETRI_PLACES=89, PETRI_TRANSITIONS=77} [2024-06-14 11:18:48,114 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 58 predicate places. [2024-06-14 11:18:48,114 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 77 transitions, 649 flow [2024-06-14 11:18:48,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:48,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:48,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:48,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-14 11:18:48,115 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:18:48,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:48,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1354391970, now seen corresponding path program 1 times [2024-06-14 11:18:48,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:48,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617112769] [2024-06-14 11:18:48,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:48,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:48,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:49,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:49,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:49,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617112769] [2024-06-14 11:18:49,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617112769] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:49,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:49,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:18:49,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928295209] [2024-06-14 11:18:49,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:49,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:18:49,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:49,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:18:49,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:18:49,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:18:49,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 77 transitions, 649 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:49,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:49,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:18:49,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:49,634 INFO L124 PetriNetUnfolderBase]: 241/432 cut-off events. [2024-06-14 11:18:49,635 INFO L125 PetriNetUnfolderBase]: For 7452/7452 co-relation queries the response was YES. [2024-06-14 11:18:49,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2506 conditions, 432 events. 241/432 cut-off events. For 7452/7452 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1581 event pairs, 47 based on Foata normal form. 1/433 useless extension candidates. Maximal degree in co-relation 2460. Up to 408 conditions per place. [2024-06-14 11:18:49,638 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 70 selfloop transitions, 14 changer transitions 0/86 dead transitions. [2024-06-14 11:18:49,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 86 transitions, 837 flow [2024-06-14 11:18:49,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:18:49,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:18:49,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2024-06-14 11:18:49,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3055555555555556 [2024-06-14 11:18:49,639 INFO L175 Difference]: Start difference. First operand has 89 places, 77 transitions, 649 flow. Second operand 9 states and 88 transitions. [2024-06-14 11:18:49,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 86 transitions, 837 flow [2024-06-14 11:18:49,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 86 transitions, 788 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-14 11:18:49,648 INFO L231 Difference]: Finished difference. Result has 92 places, 77 transitions, 633 flow [2024-06-14 11:18:49,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=600, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=633, PETRI_PLACES=92, PETRI_TRANSITIONS=77} [2024-06-14 11:18:49,648 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 61 predicate places. [2024-06-14 11:18:49,648 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 77 transitions, 633 flow [2024-06-14 11:18:49,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:49,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:49,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:49,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-14 11:18:49,649 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:18:49,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:49,649 INFO L85 PathProgramCache]: Analyzing trace with hash -2110958390, now seen corresponding path program 1 times [2024-06-14 11:18:49,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:49,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416140877] [2024-06-14 11:18:49,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:49,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:49,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:50,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:50,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:50,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416140877] [2024-06-14 11:18:50,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416140877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:50,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:50,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:18:50,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144674317] [2024-06-14 11:18:50,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:50,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:18:50,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:50,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:18:50,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:18:50,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:18:50,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 77 transitions, 633 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:50,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:50,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:18:50,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:50,654 INFO L124 PetriNetUnfolderBase]: 245/440 cut-off events. [2024-06-14 11:18:50,654 INFO L125 PetriNetUnfolderBase]: For 8265/8265 co-relation queries the response was YES. [2024-06-14 11:18:50,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2545 conditions, 440 events. 245/440 cut-off events. For 8265/8265 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1639 event pairs, 26 based on Foata normal form. 2/442 useless extension candidates. Maximal degree in co-relation 2498. Up to 338 conditions per place. [2024-06-14 11:18:50,657 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 73 selfloop transitions, 16 changer transitions 0/91 dead transitions. [2024-06-14 11:18:50,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 91 transitions, 889 flow [2024-06-14 11:18:50,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:18:50,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:18:50,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-14 11:18:50,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35267857142857145 [2024-06-14 11:18:50,658 INFO L175 Difference]: Start difference. First operand has 92 places, 77 transitions, 633 flow. Second operand 7 states and 79 transitions. [2024-06-14 11:18:50,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 91 transitions, 889 flow [2024-06-14 11:18:50,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 91 transitions, 856 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-14 11:18:50,666 INFO L231 Difference]: Finished difference. Result has 91 places, 78 transitions, 642 flow [2024-06-14 11:18:50,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=600, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=642, PETRI_PLACES=91, PETRI_TRANSITIONS=78} [2024-06-14 11:18:50,666 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 60 predicate places. [2024-06-14 11:18:50,667 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 78 transitions, 642 flow [2024-06-14 11:18:50,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:50,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:50,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:50,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-14 11:18:50,667 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:18:50,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:50,668 INFO L85 PathProgramCache]: Analyzing trace with hash -2108216626, now seen corresponding path program 1 times [2024-06-14 11:18:50,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:50,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131775872] [2024-06-14 11:18:50,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:50,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:50,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:51,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:51,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:51,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131775872] [2024-06-14 11:18:51,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131775872] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:51,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:51,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:18:51,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904039756] [2024-06-14 11:18:51,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:51,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:18:51,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:51,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:18:51,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:18:51,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:18:51,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 78 transitions, 642 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:51,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:51,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:18:51,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:51,587 INFO L124 PetriNetUnfolderBase]: 243/437 cut-off events. [2024-06-14 11:18:51,587 INFO L125 PetriNetUnfolderBase]: For 8521/8521 co-relation queries the response was YES. [2024-06-14 11:18:51,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2561 conditions, 437 events. 243/437 cut-off events. For 8521/8521 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1619 event pairs, 43 based on Foata normal form. 1/438 useless extension candidates. Maximal degree in co-relation 2513. Up to 364 conditions per place. [2024-06-14 11:18:51,590 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 66 selfloop transitions, 21 changer transitions 0/89 dead transitions. [2024-06-14 11:18:51,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 89 transitions, 846 flow [2024-06-14 11:18:51,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:18:51,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:18:51,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-06-14 11:18:51,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3705357142857143 [2024-06-14 11:18:51,592 INFO L175 Difference]: Start difference. First operand has 91 places, 78 transitions, 642 flow. Second operand 7 states and 83 transitions. [2024-06-14 11:18:51,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 89 transitions, 846 flow [2024-06-14 11:18:51,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 89 transitions, 815 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-14 11:18:51,601 INFO L231 Difference]: Finished difference. Result has 94 places, 78 transitions, 662 flow [2024-06-14 11:18:51,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=662, PETRI_PLACES=94, PETRI_TRANSITIONS=78} [2024-06-14 11:18:51,601 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 63 predicate places. [2024-06-14 11:18:51,602 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 78 transitions, 662 flow [2024-06-14 11:18:51,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:51,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:51,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:51,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-14 11:18:51,602 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:18:51,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:51,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1712233806, now seen corresponding path program 2 times [2024-06-14 11:18:51,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:51,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209419266] [2024-06-14 11:18:51,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:51,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:51,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:52,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:52,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:52,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209419266] [2024-06-14 11:18:52,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209419266] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:52,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:52,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:18:52,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029399451] [2024-06-14 11:18:52,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:52,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:18:52,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:52,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:18:52,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:18:52,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:18:52,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 78 transitions, 662 flow. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:52,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:52,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:18:52,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:52,417 INFO L124 PetriNetUnfolderBase]: 240/432 cut-off events. [2024-06-14 11:18:52,417 INFO L125 PetriNetUnfolderBase]: For 8974/8974 co-relation queries the response was YES. [2024-06-14 11:18:52,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2552 conditions, 432 events. 240/432 cut-off events. For 8974/8974 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1590 event pairs, 44 based on Foata normal form. 2/434 useless extension candidates. Maximal degree in co-relation 2503. Up to 365 conditions per place. [2024-06-14 11:18:52,420 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 70 selfloop transitions, 17 changer transitions 0/89 dead transitions. [2024-06-14 11:18:52,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 89 transitions, 862 flow [2024-06-14 11:18:52,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:18:52,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:18:52,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-14 11:18:52,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36160714285714285 [2024-06-14 11:18:52,421 INFO L175 Difference]: Start difference. First operand has 94 places, 78 transitions, 662 flow. Second operand 7 states and 81 transitions. [2024-06-14 11:18:52,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 89 transitions, 862 flow [2024-06-14 11:18:52,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 89 transitions, 799 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-14 11:18:52,431 INFO L231 Difference]: Finished difference. Result has 94 places, 78 transitions, 637 flow [2024-06-14 11:18:52,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=599, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=637, PETRI_PLACES=94, PETRI_TRANSITIONS=78} [2024-06-14 11:18:52,431 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 63 predicate places. [2024-06-14 11:18:52,432 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 78 transitions, 637 flow [2024-06-14 11:18:52,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:52,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:52,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:52,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-14 11:18:52,432 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:18:52,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:52,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1827640420, now seen corresponding path program 2 times [2024-06-14 11:18:52,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:52,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469910764] [2024-06-14 11:18:52,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:52,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:52,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:53,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:53,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:53,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469910764] [2024-06-14 11:18:53,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469910764] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:53,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:53,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:18:53,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563759575] [2024-06-14 11:18:53,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:53,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:18:53,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:53,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:18:53,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:18:53,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:18:53,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 78 transitions, 637 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:53,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:53,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:18:53,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:53,408 INFO L124 PetriNetUnfolderBase]: 238/429 cut-off events. [2024-06-14 11:18:53,408 INFO L125 PetriNetUnfolderBase]: For 9057/9057 co-relation queries the response was YES. [2024-06-14 11:18:53,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2486 conditions, 429 events. 238/429 cut-off events. For 9057/9057 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1568 event pairs, 44 based on Foata normal form. 1/430 useless extension candidates. Maximal degree in co-relation 2437. Up to 359 conditions per place. [2024-06-14 11:18:53,411 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 69 selfloop transitions, 21 changer transitions 0/92 dead transitions. [2024-06-14 11:18:53,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 92 transitions, 855 flow [2024-06-14 11:18:53,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:18:53,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:18:53,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2024-06-14 11:18:53,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3794642857142857 [2024-06-14 11:18:53,412 INFO L175 Difference]: Start difference. First operand has 94 places, 78 transitions, 637 flow. Second operand 7 states and 85 transitions. [2024-06-14 11:18:53,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 92 transitions, 855 flow [2024-06-14 11:18:53,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 92 transitions, 814 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-14 11:18:53,422 INFO L231 Difference]: Finished difference. Result has 95 places, 78 transitions, 646 flow [2024-06-14 11:18:53,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=596, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=646, PETRI_PLACES=95, PETRI_TRANSITIONS=78} [2024-06-14 11:18:53,423 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 64 predicate places. [2024-06-14 11:18:53,423 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 78 transitions, 646 flow [2024-06-14 11:18:53,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:53,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:53,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:53,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-14 11:18:53,424 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:18:53,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:53,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1827818236, now seen corresponding path program 1 times [2024-06-14 11:18:53,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:53,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498302581] [2024-06-14 11:18:53,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:53,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:53,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:54,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:54,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:54,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498302581] [2024-06-14 11:18:54,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498302581] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:54,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:54,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:18:54,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492601542] [2024-06-14 11:18:54,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:54,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:18:54,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:54,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:18:54,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:18:54,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:18:54,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 78 transitions, 646 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:54,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:54,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:18:54,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:54,382 INFO L124 PetriNetUnfolderBase]: 244/440 cut-off events. [2024-06-14 11:18:54,382 INFO L125 PetriNetUnfolderBase]: For 10135/10135 co-relation queries the response was YES. [2024-06-14 11:18:54,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2578 conditions, 440 events. 244/440 cut-off events. For 10135/10135 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1638 event pairs, 48 based on Foata normal form. 2/442 useless extension candidates. Maximal degree in co-relation 2528. Up to 344 conditions per place. [2024-06-14 11:18:54,385 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 67 selfloop transitions, 25 changer transitions 0/94 dead transitions. [2024-06-14 11:18:54,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 94 transitions, 898 flow [2024-06-14 11:18:54,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:18:54,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:18:54,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-14 11:18:54,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35546875 [2024-06-14 11:18:54,388 INFO L175 Difference]: Start difference. First operand has 95 places, 78 transitions, 646 flow. Second operand 8 states and 91 transitions. [2024-06-14 11:18:54,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 94 transitions, 898 flow [2024-06-14 11:18:54,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 94 transitions, 799 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-14 11:18:54,399 INFO L231 Difference]: Finished difference. Result has 95 places, 80 transitions, 630 flow [2024-06-14 11:18:54,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=547, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=630, PETRI_PLACES=95, PETRI_TRANSITIONS=80} [2024-06-14 11:18:54,399 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 64 predicate places. [2024-06-14 11:18:54,399 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 80 transitions, 630 flow [2024-06-14 11:18:54,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:54,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:54,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:54,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-14 11:18:54,400 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:18:54,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:54,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1827645256, now seen corresponding path program 2 times [2024-06-14 11:18:54,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:54,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792601052] [2024-06-14 11:18:54,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:54,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:54,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:55,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:55,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:55,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792601052] [2024-06-14 11:18:55,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792601052] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:55,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:55,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:18:55,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791092780] [2024-06-14 11:18:55,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:55,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:18:55,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:55,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:18:55,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:18:55,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:18:55,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 80 transitions, 630 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:55,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:55,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:18:55,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:55,321 INFO L124 PetriNetUnfolderBase]: 250/450 cut-off events. [2024-06-14 11:18:55,321 INFO L125 PetriNetUnfolderBase]: For 10901/10901 co-relation queries the response was YES. [2024-06-14 11:18:55,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2631 conditions, 450 events. 250/450 cut-off events. For 10901/10901 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1686 event pairs, 52 based on Foata normal form. 2/452 useless extension candidates. Maximal degree in co-relation 2582. Up to 374 conditions per place. [2024-06-14 11:18:55,327 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 74 selfloop transitions, 22 changer transitions 0/98 dead transitions. [2024-06-14 11:18:55,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 98 transitions, 896 flow [2024-06-14 11:18:55,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:18:55,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:18:55,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-14 11:18:55,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36328125 [2024-06-14 11:18:55,328 INFO L175 Difference]: Start difference. First operand has 95 places, 80 transitions, 630 flow. Second operand 8 states and 93 transitions. [2024-06-14 11:18:55,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 98 transitions, 896 flow [2024-06-14 11:18:55,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 98 transitions, 829 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-14 11:18:55,338 INFO L231 Difference]: Finished difference. Result has 97 places, 82 transitions, 644 flow [2024-06-14 11:18:55,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=644, PETRI_PLACES=97, PETRI_TRANSITIONS=82} [2024-06-14 11:18:55,338 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 66 predicate places. [2024-06-14 11:18:55,338 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 82 transitions, 644 flow [2024-06-14 11:18:55,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:55,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:55,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:55,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-14 11:18:55,339 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:18:55,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:55,339 INFO L85 PathProgramCache]: Analyzing trace with hash 27020432, now seen corresponding path program 1 times [2024-06-14 11:18:55,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:55,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503964219] [2024-06-14 11:18:55,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:55,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:55,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:56,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:56,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:56,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503964219] [2024-06-14 11:18:56,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503964219] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:56,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:56,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:18:56,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376640738] [2024-06-14 11:18:56,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:56,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:18:56,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:56,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:18:56,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:18:56,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:18:56,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 82 transitions, 644 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:56,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:56,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:18:56,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:56,960 INFO L124 PetriNetUnfolderBase]: 259/465 cut-off events. [2024-06-14 11:18:56,961 INFO L125 PetriNetUnfolderBase]: For 12025/12025 co-relation queries the response was YES. [2024-06-14 11:18:56,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2730 conditions, 465 events. 259/465 cut-off events. For 12025/12025 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1758 event pairs, 50 based on Foata normal form. 3/468 useless extension candidates. Maximal degree in co-relation 2680. Up to 372 conditions per place. [2024-06-14 11:18:56,964 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 72 selfloop transitions, 26 changer transitions 0/100 dead transitions. [2024-06-14 11:18:56,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 100 transitions, 926 flow [2024-06-14 11:18:56,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:18:56,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:18:56,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-14 11:18:56,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-14 11:18:56,965 INFO L175 Difference]: Start difference. First operand has 97 places, 82 transitions, 644 flow. Second operand 9 states and 102 transitions. [2024-06-14 11:18:56,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 100 transitions, 926 flow [2024-06-14 11:18:56,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 100 transitions, 861 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-14 11:18:56,976 INFO L231 Difference]: Finished difference. Result has 100 places, 85 transitions, 683 flow [2024-06-14 11:18:56,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=683, PETRI_PLACES=100, PETRI_TRANSITIONS=85} [2024-06-14 11:18:56,976 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 69 predicate places. [2024-06-14 11:18:56,976 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 85 transitions, 683 flow [2024-06-14 11:18:56,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:56,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:56,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:56,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-14 11:18:56,977 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:18:56,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:56,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1827824746, now seen corresponding path program 3 times [2024-06-14 11:18:56,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:56,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230813513] [2024-06-14 11:18:56,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:56,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:57,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:57,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:57,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:57,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230813513] [2024-06-14 11:18:57,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230813513] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:57,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:57,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:18:57,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685076427] [2024-06-14 11:18:57,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:57,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:18:57,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:57,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:18:57,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:18:57,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:18:57,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 85 transitions, 683 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:57,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:57,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:18:57,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:57,911 INFO L124 PetriNetUnfolderBase]: 265/475 cut-off events. [2024-06-14 11:18:57,911 INFO L125 PetriNetUnfolderBase]: For 12364/12364 co-relation queries the response was YES. [2024-06-14 11:18:57,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2860 conditions, 475 events. 265/475 cut-off events. For 12364/12364 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1810 event pairs, 46 based on Foata normal form. 2/477 useless extension candidates. Maximal degree in co-relation 2809. Up to 349 conditions per place. [2024-06-14 11:18:57,914 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 67 selfloop transitions, 32 changer transitions 0/101 dead transitions. [2024-06-14 11:18:57,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 101 transitions, 959 flow [2024-06-14 11:18:57,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:18:57,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:18:57,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-14 11:18:57,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-14 11:18:57,917 INFO L175 Difference]: Start difference. First operand has 100 places, 85 transitions, 683 flow. Second operand 8 states and 92 transitions. [2024-06-14 11:18:57,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 101 transitions, 959 flow [2024-06-14 11:18:57,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 101 transitions, 877 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-14 11:18:57,930 INFO L231 Difference]: Finished difference. Result has 101 places, 87 transitions, 709 flow [2024-06-14 11:18:57,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=601, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=709, PETRI_PLACES=101, PETRI_TRANSITIONS=87} [2024-06-14 11:18:57,931 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 70 predicate places. [2024-06-14 11:18:57,931 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 87 transitions, 709 flow [2024-06-14 11:18:57,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:57,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:57,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:57,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-14 11:18:57,932 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:18:57,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:57,932 INFO L85 PathProgramCache]: Analyzing trace with hash -464478238, now seen corresponding path program 2 times [2024-06-14 11:18:57,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:57,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020214991] [2024-06-14 11:18:57,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:57,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:57,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:58,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:58,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:58,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020214991] [2024-06-14 11:18:58,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020214991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:58,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:58,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:18:58,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254009467] [2024-06-14 11:18:58,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:58,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:18:58,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:58,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:18:58,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:18:59,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:18:59,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 87 transitions, 709 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:59,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:59,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:18:59,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:59,287 INFO L124 PetriNetUnfolderBase]: 271/486 cut-off events. [2024-06-14 11:18:59,288 INFO L125 PetriNetUnfolderBase]: For 13585/13587 co-relation queries the response was YES. [2024-06-14 11:18:59,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2975 conditions, 486 events. 271/486 cut-off events. For 13585/13587 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1852 event pairs, 57 based on Foata normal form. 2/488 useless extension candidates. Maximal degree in co-relation 2923. Up to 393 conditions per place. [2024-06-14 11:18:59,291 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 67 selfloop transitions, 31 changer transitions 0/100 dead transitions. [2024-06-14 11:18:59,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 100 transitions, 963 flow [2024-06-14 11:18:59,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:18:59,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:18:59,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-14 11:18:59,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-14 11:18:59,292 INFO L175 Difference]: Start difference. First operand has 101 places, 87 transitions, 709 flow. Second operand 9 states and 99 transitions. [2024-06-14 11:18:59,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 100 transitions, 963 flow [2024-06-14 11:18:59,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 100 transitions, 873 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-14 11:18:59,306 INFO L231 Difference]: Finished difference. Result has 104 places, 89 transitions, 716 flow [2024-06-14 11:18:59,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=619, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=716, PETRI_PLACES=104, PETRI_TRANSITIONS=89} [2024-06-14 11:18:59,306 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 73 predicate places. [2024-06-14 11:18:59,306 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 89 transitions, 716 flow [2024-06-14 11:18:59,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:59,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:59,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:59,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-14 11:18:59,307 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:18:59,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:59,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1073535998, now seen corresponding path program 3 times [2024-06-14 11:18:59,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:59,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979936066] [2024-06-14 11:18:59,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:59,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:59,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:00,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:00,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:00,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979936066] [2024-06-14 11:19:00,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979936066] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:00,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:00,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:00,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059616573] [2024-06-14 11:19:00,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:00,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:00,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:00,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:00,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:00,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:19:00,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 89 transitions, 716 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:00,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:00,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:19:00,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:00,797 INFO L124 PetriNetUnfolderBase]: 274/491 cut-off events. [2024-06-14 11:19:00,797 INFO L125 PetriNetUnfolderBase]: For 13870/13872 co-relation queries the response was YES. [2024-06-14 11:19:00,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3011 conditions, 491 events. 274/491 cut-off events. For 13870/13872 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1872 event pairs, 61 based on Foata normal form. 1/492 useless extension candidates. Maximal degree in co-relation 2958. Up to 419 conditions per place. [2024-06-14 11:19:00,800 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 75 selfloop transitions, 23 changer transitions 0/100 dead transitions. [2024-06-14 11:19:00,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 100 transitions, 962 flow [2024-06-14 11:19:00,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:19:00,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:19:00,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-14 11:19:00,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3298611111111111 [2024-06-14 11:19:00,801 INFO L175 Difference]: Start difference. First operand has 104 places, 89 transitions, 716 flow. Second operand 9 states and 95 transitions. [2024-06-14 11:19:00,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 100 transitions, 962 flow [2024-06-14 11:19:00,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 100 transitions, 883 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-14 11:19:00,813 INFO L231 Difference]: Finished difference. Result has 106 places, 91 transitions, 722 flow [2024-06-14 11:19:00,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=637, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=722, PETRI_PLACES=106, PETRI_TRANSITIONS=91} [2024-06-14 11:19:00,814 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 75 predicate places. [2024-06-14 11:19:00,814 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 91 transitions, 722 flow [2024-06-14 11:19:00,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:00,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:00,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:00,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-14 11:19:00,815 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:00,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:00,815 INFO L85 PathProgramCache]: Analyzing trace with hash -621508560, now seen corresponding path program 4 times [2024-06-14 11:19:00,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:00,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664276822] [2024-06-14 11:19:00,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:00,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:00,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:01,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:01,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:01,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664276822] [2024-06-14 11:19:01,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664276822] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:01,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:01,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:19:01,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107765143] [2024-06-14 11:19:01,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:01,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:19:01,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:01,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:19:01,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:19:01,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:19:01,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 91 transitions, 722 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:01,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:01,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:19:01,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:01,778 INFO L124 PetriNetUnfolderBase]: 280/501 cut-off events. [2024-06-14 11:19:01,778 INFO L125 PetriNetUnfolderBase]: For 15208/15210 co-relation queries the response was YES. [2024-06-14 11:19:01,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3089 conditions, 501 events. 280/501 cut-off events. For 15208/15210 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1942 event pairs, 58 based on Foata normal form. 2/503 useless extension candidates. Maximal degree in co-relation 3035. Up to 386 conditions per place. [2024-06-14 11:19:01,781 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 73 selfloop transitions, 29 changer transitions 0/104 dead transitions. [2024-06-14 11:19:01,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 104 transitions, 1000 flow [2024-06-14 11:19:01,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:19:01,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:19:01,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-14 11:19:01,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34765625 [2024-06-14 11:19:01,782 INFO L175 Difference]: Start difference. First operand has 106 places, 91 transitions, 722 flow. Second operand 8 states and 89 transitions. [2024-06-14 11:19:01,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 104 transitions, 1000 flow [2024-06-14 11:19:01,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 104 transitions, 931 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-14 11:19:01,796 INFO L231 Difference]: Finished difference. Result has 107 places, 93 transitions, 758 flow [2024-06-14 11:19:01,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=758, PETRI_PLACES=107, PETRI_TRANSITIONS=93} [2024-06-14 11:19:01,796 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 76 predicate places. [2024-06-14 11:19:01,796 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 93 transitions, 758 flow [2024-06-14 11:19:01,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:01,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:01,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:01,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-14 11:19:01,797 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:01,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:01,797 INFO L85 PathProgramCache]: Analyzing trace with hash 172156358, now seen corresponding path program 5 times [2024-06-14 11:19:01,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:01,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030691816] [2024-06-14 11:19:01,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:01,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:01,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:02,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:02,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:02,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030691816] [2024-06-14 11:19:02,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030691816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:02,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:02,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:19:02,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619464024] [2024-06-14 11:19:02,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:02,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:19:02,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:02,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:19:02,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:19:02,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:19:02,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 93 transitions, 758 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:02,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:02,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:19:02,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:02,719 INFO L124 PetriNetUnfolderBase]: 291/519 cut-off events. [2024-06-14 11:19:02,720 INFO L125 PetriNetUnfolderBase]: For 17094/17096 co-relation queries the response was YES. [2024-06-14 11:19:02,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3336 conditions, 519 events. 291/519 cut-off events. For 17094/17096 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2041 event pairs, 64 based on Foata normal form. 2/521 useless extension candidates. Maximal degree in co-relation 3281. Up to 336 conditions per place. [2024-06-14 11:19:02,722 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 70 selfloop transitions, 41 changer transitions 0/113 dead transitions. [2024-06-14 11:19:02,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 113 transitions, 1280 flow [2024-06-14 11:19:02,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:19:02,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:19:02,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-14 11:19:02,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 11:19:02,724 INFO L175 Difference]: Start difference. First operand has 107 places, 93 transitions, 758 flow. Second operand 8 states and 96 transitions. [2024-06-14 11:19:02,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 113 transitions, 1280 flow [2024-06-14 11:19:02,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 113 transitions, 1191 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-14 11:19:02,740 INFO L231 Difference]: Finished difference. Result has 109 places, 99 transitions, 886 flow [2024-06-14 11:19:02,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=886, PETRI_PLACES=109, PETRI_TRANSITIONS=99} [2024-06-14 11:19:02,740 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 78 predicate places. [2024-06-14 11:19:02,740 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 99 transitions, 886 flow [2024-06-14 11:19:02,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:02,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:02,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:02,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-14 11:19:02,740 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:02,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:02,741 INFO L85 PathProgramCache]: Analyzing trace with hash -455907358, now seen corresponding path program 4 times [2024-06-14 11:19:02,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:02,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569813062] [2024-06-14 11:19:02,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:02,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:02,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:03,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:03,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:03,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569813062] [2024-06-14 11:19:03,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569813062] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:03,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:03,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:03,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425579710] [2024-06-14 11:19:03,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:03,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:03,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:03,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:03,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:03,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:19:03,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 99 transitions, 886 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:03,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:03,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:19:03,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:04,006 INFO L124 PetriNetUnfolderBase]: 302/535 cut-off events. [2024-06-14 11:19:04,006 INFO L125 PetriNetUnfolderBase]: For 18840/18840 co-relation queries the response was YES. [2024-06-14 11:19:04,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3546 conditions, 535 events. 302/535 cut-off events. For 18840/18840 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2098 event pairs, 50 based on Foata normal form. 2/537 useless extension candidates. Maximal degree in co-relation 3490. Up to 501 conditions per place. [2024-06-14 11:19:04,009 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 94 selfloop transitions, 18 changer transitions 0/114 dead transitions. [2024-06-14 11:19:04,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 114 transitions, 1270 flow [2024-06-14 11:19:04,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:19:04,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:19:04,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 92 transitions. [2024-06-14 11:19:04,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3194444444444444 [2024-06-14 11:19:04,011 INFO L175 Difference]: Start difference. First operand has 109 places, 99 transitions, 886 flow. Second operand 9 states and 92 transitions. [2024-06-14 11:19:04,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 114 transitions, 1270 flow [2024-06-14 11:19:04,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 114 transitions, 1215 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-14 11:19:04,029 INFO L231 Difference]: Finished difference. Result has 115 places, 104 transitions, 952 flow [2024-06-14 11:19:04,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=831, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=952, PETRI_PLACES=115, PETRI_TRANSITIONS=104} [2024-06-14 11:19:04,030 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 84 predicate places. [2024-06-14 11:19:04,030 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 104 transitions, 952 flow [2024-06-14 11:19:04,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:04,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:04,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:04,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-14 11:19:04,030 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:04,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:04,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1309711110, now seen corresponding path program 6 times [2024-06-14 11:19:04,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:04,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680783510] [2024-06-14 11:19:04,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:04,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:04,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:04,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:04,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:04,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680783510] [2024-06-14 11:19:04,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680783510] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:04,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:04,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:19:04,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862300268] [2024-06-14 11:19:04,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:04,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:19:04,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:04,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:19:04,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:19:04,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:19:04,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 104 transitions, 952 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:04,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:04,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:19:04,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:04,814 INFO L124 PetriNetUnfolderBase]: 298/529 cut-off events. [2024-06-14 11:19:04,814 INFO L125 PetriNetUnfolderBase]: For 18488/18488 co-relation queries the response was YES. [2024-06-14 11:19:04,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3494 conditions, 529 events. 298/529 cut-off events. For 18488/18488 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2077 event pairs, 50 based on Foata normal form. 2/531 useless extension candidates. Maximal degree in co-relation 3436. Up to 502 conditions per place. [2024-06-14 11:19:04,817 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 98 selfloop transitions, 13 changer transitions 0/113 dead transitions. [2024-06-14 11:19:04,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 113 transitions, 1198 flow [2024-06-14 11:19:04,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:19:04,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:19:04,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 82 transitions. [2024-06-14 11:19:04,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3203125 [2024-06-14 11:19:04,818 INFO L175 Difference]: Start difference. First operand has 115 places, 104 transitions, 952 flow. Second operand 8 states and 82 transitions. [2024-06-14 11:19:04,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 113 transitions, 1198 flow [2024-06-14 11:19:04,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 113 transitions, 1112 flow, removed 36 selfloop flow, removed 5 redundant places. [2024-06-14 11:19:04,836 INFO L231 Difference]: Finished difference. Result has 118 places, 104 transitions, 897 flow [2024-06-14 11:19:04,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=866, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=897, PETRI_PLACES=118, PETRI_TRANSITIONS=104} [2024-06-14 11:19:04,837 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 87 predicate places. [2024-06-14 11:19:04,837 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 104 transitions, 897 flow [2024-06-14 11:19:04,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:04,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:04,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:04,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-14 11:19:04,837 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:04,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:04,837 INFO L85 PathProgramCache]: Analyzing trace with hash -456204028, now seen corresponding path program 5 times [2024-06-14 11:19:04,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:04,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877383036] [2024-06-14 11:19:04,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:04,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:04,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:05,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:05,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:05,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877383036] [2024-06-14 11:19:05,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877383036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:05,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:05,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:05,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622083641] [2024-06-14 11:19:05,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:05,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:05,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:05,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:05,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:05,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:19:05,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 104 transitions, 897 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:05,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:05,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:19:05,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:05,816 INFO L124 PetriNetUnfolderBase]: 299/531 cut-off events. [2024-06-14 11:19:05,816 INFO L125 PetriNetUnfolderBase]: For 18387/18387 co-relation queries the response was YES. [2024-06-14 11:19:05,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3407 conditions, 531 events. 299/531 cut-off events. For 18387/18387 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2082 event pairs, 49 based on Foata normal form. 2/533 useless extension candidates. Maximal degree in co-relation 3347. Up to 488 conditions per place. [2024-06-14 11:19:05,819 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 94 selfloop transitions, 21 changer transitions 0/117 dead transitions. [2024-06-14 11:19:05,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 117 transitions, 1263 flow [2024-06-14 11:19:05,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:19:05,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:19:05,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-14 11:19:05,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3298611111111111 [2024-06-14 11:19:05,821 INFO L175 Difference]: Start difference. First operand has 118 places, 104 transitions, 897 flow. Second operand 9 states and 95 transitions. [2024-06-14 11:19:05,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 117 transitions, 1263 flow [2024-06-14 11:19:05,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 117 transitions, 1228 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-14 11:19:05,840 INFO L231 Difference]: Finished difference. Result has 120 places, 106 transitions, 947 flow [2024-06-14 11:19:05,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=862, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=947, PETRI_PLACES=120, PETRI_TRANSITIONS=106} [2024-06-14 11:19:05,841 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 89 predicate places. [2024-06-14 11:19:05,841 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 106 transitions, 947 flow [2024-06-14 11:19:05,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:05,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:05,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:05,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-14 11:19:05,842 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:05,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:05,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1310018940, now seen corresponding path program 1 times [2024-06-14 11:19:05,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:05,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359787161] [2024-06-14 11:19:05,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:05,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:05,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:07,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:07,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:07,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359787161] [2024-06-14 11:19:07,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359787161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:07,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:07,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:19:07,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539136119] [2024-06-14 11:19:07,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:07,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:19:07,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:07,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:19:07,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:19:07,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:19:07,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 106 transitions, 947 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:07,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:07,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:19:07,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:07,439 INFO L124 PetriNetUnfolderBase]: 296/526 cut-off events. [2024-06-14 11:19:07,440 INFO L125 PetriNetUnfolderBase]: For 18280/18280 co-relation queries the response was YES. [2024-06-14 11:19:07,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3387 conditions, 526 events. 296/526 cut-off events. For 18280/18280 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2046 event pairs, 48 based on Foata normal form. 2/528 useless extension candidates. Maximal degree in co-relation 3326. Up to 496 conditions per place. [2024-06-14 11:19:07,443 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 100 selfloop transitions, 15 changer transitions 0/117 dead transitions. [2024-06-14 11:19:07,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 117 transitions, 1201 flow [2024-06-14 11:19:07,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:19:07,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:19:07,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 95 transitions. [2024-06-14 11:19:07,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.296875 [2024-06-14 11:19:07,444 INFO L175 Difference]: Start difference. First operand has 120 places, 106 transitions, 947 flow. Second operand 10 states and 95 transitions. [2024-06-14 11:19:07,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 117 transitions, 1201 flow [2024-06-14 11:19:07,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 117 transitions, 1136 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-14 11:19:07,463 INFO L231 Difference]: Finished difference. Result has 123 places, 106 transitions, 916 flow [2024-06-14 11:19:07,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=882, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=916, PETRI_PLACES=123, PETRI_TRANSITIONS=106} [2024-06-14 11:19:07,463 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 92 predicate places. [2024-06-14 11:19:07,463 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 106 transitions, 916 flow [2024-06-14 11:19:07,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:07,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:07,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:07,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-14 11:19:07,464 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:07,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:07,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1015199108, now seen corresponding path program 1 times [2024-06-14 11:19:07,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:07,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217723791] [2024-06-14 11:19:07,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:07,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:07,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:08,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:08,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:08,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217723791] [2024-06-14 11:19:08,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217723791] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:08,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:08,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:08,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634627790] [2024-06-14 11:19:08,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:08,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:08,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:08,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:08,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:08,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:19:08,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 106 transitions, 916 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:08,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:08,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:19:08,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:08,386 INFO L124 PetriNetUnfolderBase]: 300/534 cut-off events. [2024-06-14 11:19:08,386 INFO L125 PetriNetUnfolderBase]: For 18728/18728 co-relation queries the response was YES. [2024-06-14 11:19:08,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3395 conditions, 534 events. 300/534 cut-off events. For 18728/18728 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2113 event pairs, 27 based on Foata normal form. 2/536 useless extension candidates. Maximal degree in co-relation 3333. Up to 427 conditions per place. [2024-06-14 11:19:08,389 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 102 selfloop transitions, 17 changer transitions 0/121 dead transitions. [2024-06-14 11:19:08,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 121 transitions, 1200 flow [2024-06-14 11:19:08,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:19:08,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:19:08,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-14 11:19:08,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3359375 [2024-06-14 11:19:08,390 INFO L175 Difference]: Start difference. First operand has 123 places, 106 transitions, 916 flow. Second operand 8 states and 86 transitions. [2024-06-14 11:19:08,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 121 transitions, 1200 flow [2024-06-14 11:19:08,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 121 transitions, 1156 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-14 11:19:08,411 INFO L231 Difference]: Finished difference. Result has 122 places, 107 transitions, 926 flow [2024-06-14 11:19:08,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=872, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=926, PETRI_PLACES=122, PETRI_TRANSITIONS=107} [2024-06-14 11:19:08,412 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 91 predicate places. [2024-06-14 11:19:08,412 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 107 transitions, 926 flow [2024-06-14 11:19:08,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:08,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:08,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:08,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-14 11:19:08,412 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:08,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:08,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1013321438, now seen corresponding path program 2 times [2024-06-14 11:19:08,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:08,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277163638] [2024-06-14 11:19:08,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:08,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:08,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:09,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:09,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:09,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277163638] [2024-06-14 11:19:09,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277163638] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:09,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:09,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:09,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963887390] [2024-06-14 11:19:09,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:09,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:09,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:09,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:09,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:09,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:19:09,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 107 transitions, 926 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:09,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:09,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:19:09,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:09,370 INFO L124 PetriNetUnfolderBase]: 304/542 cut-off events. [2024-06-14 11:19:09,371 INFO L125 PetriNetUnfolderBase]: For 19791/19791 co-relation queries the response was YES. [2024-06-14 11:19:09,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3462 conditions, 542 events. 304/542 cut-off events. For 19791/19791 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2158 event pairs, 45 based on Foata normal form. 2/544 useless extension candidates. Maximal degree in co-relation 3400. Up to 461 conditions per place. [2024-06-14 11:19:09,374 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 97 selfloop transitions, 22 changer transitions 0/121 dead transitions. [2024-06-14 11:19:09,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 121 transitions, 1214 flow [2024-06-14 11:19:09,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:19:09,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:19:09,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-14 11:19:09,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35546875 [2024-06-14 11:19:09,383 INFO L175 Difference]: Start difference. First operand has 122 places, 107 transitions, 926 flow. Second operand 8 states and 91 transitions. [2024-06-14 11:19:09,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 121 transitions, 1214 flow [2024-06-14 11:19:09,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 121 transitions, 1170 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-14 11:19:09,408 INFO L231 Difference]: Finished difference. Result has 124 places, 108 transitions, 949 flow [2024-06-14 11:19:09,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=882, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=949, PETRI_PLACES=124, PETRI_TRANSITIONS=108} [2024-06-14 11:19:09,410 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 93 predicate places. [2024-06-14 11:19:09,411 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 108 transitions, 949 flow [2024-06-14 11:19:09,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:09,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:09,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:09,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-14 11:19:09,411 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:09,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:09,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1013321283, now seen corresponding path program 1 times [2024-06-14 11:19:09,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:09,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964587467] [2024-06-14 11:19:09,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:09,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:09,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:10,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:10,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:10,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964587467] [2024-06-14 11:19:10,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964587467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:10,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:10,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:10,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183544724] [2024-06-14 11:19:10,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:10,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:10,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:10,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:10,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:10,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:19:10,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 108 transitions, 949 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:10,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:10,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:19:10,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:10,494 INFO L124 PetriNetUnfolderBase]: 355/631 cut-off events. [2024-06-14 11:19:10,494 INFO L125 PetriNetUnfolderBase]: For 20823/20823 co-relation queries the response was YES. [2024-06-14 11:19:10,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3968 conditions, 631 events. 355/631 cut-off events. For 20823/20823 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2644 event pairs, 57 based on Foata normal form. 1/632 useless extension candidates. Maximal degree in co-relation 3905. Up to 512 conditions per place. [2024-06-14 11:19:10,498 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 110 selfloop transitions, 34 changer transitions 0/146 dead transitions. [2024-06-14 11:19:10,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 146 transitions, 1564 flow [2024-06-14 11:19:10,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:19:10,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:19:10,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-14 11:19:10,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-14 11:19:10,499 INFO L175 Difference]: Start difference. First operand has 124 places, 108 transitions, 949 flow. Second operand 9 states and 103 transitions. [2024-06-14 11:19:10,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 146 transitions, 1564 flow [2024-06-14 11:19:10,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 146 transitions, 1477 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-14 11:19:10,522 INFO L231 Difference]: Finished difference. Result has 132 places, 131 transitions, 1272 flow [2024-06-14 11:19:10,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=894, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1272, PETRI_PLACES=132, PETRI_TRANSITIONS=131} [2024-06-14 11:19:10,523 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 101 predicate places. [2024-06-14 11:19:10,523 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 131 transitions, 1272 flow [2024-06-14 11:19:10,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:10,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:10,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:10,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-14 11:19:10,523 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:10,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:10,524 INFO L85 PathProgramCache]: Analyzing trace with hash 342729985, now seen corresponding path program 2 times [2024-06-14 11:19:10,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:10,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739255428] [2024-06-14 11:19:10,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:10,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:10,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:11,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:11,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:11,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739255428] [2024-06-14 11:19:11,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739255428] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:11,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:11,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:11,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758314773] [2024-06-14 11:19:11,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:11,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:11,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:11,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:11,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:11,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:19:11,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 131 transitions, 1272 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:11,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:11,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:19:11,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:11,577 INFO L124 PetriNetUnfolderBase]: 358/636 cut-off events. [2024-06-14 11:19:11,578 INFO L125 PetriNetUnfolderBase]: For 22056/22056 co-relation queries the response was YES. [2024-06-14 11:19:11,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4152 conditions, 636 events. 358/636 cut-off events. For 22056/22056 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2663 event pairs, 48 based on Foata normal form. 1/637 useless extension candidates. Maximal degree in co-relation 4083. Up to 517 conditions per place. [2024-06-14 11:19:11,581 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 113 selfloop transitions, 35 changer transitions 0/150 dead transitions. [2024-06-14 11:19:11,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 150 transitions, 1682 flow [2024-06-14 11:19:11,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:19:11,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:19:11,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-14 11:19:11,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-14 11:19:11,584 INFO L175 Difference]: Start difference. First operand has 132 places, 131 transitions, 1272 flow. Second operand 9 states and 105 transitions. [2024-06-14 11:19:11,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 150 transitions, 1682 flow [2024-06-14 11:19:11,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 150 transitions, 1624 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-06-14 11:19:11,615 INFO L231 Difference]: Finished difference. Result has 140 places, 134 transitions, 1367 flow [2024-06-14 11:19:11,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1214, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1367, PETRI_PLACES=140, PETRI_TRANSITIONS=134} [2024-06-14 11:19:11,616 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 109 predicate places. [2024-06-14 11:19:11,616 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 134 transitions, 1367 flow [2024-06-14 11:19:11,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:11,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:11,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:11,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-14 11:19:11,616 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:11,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:11,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1306464836, now seen corresponding path program 3 times [2024-06-14 11:19:11,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:11,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86235775] [2024-06-14 11:19:11,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:11,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:11,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:12,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:12,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:12,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86235775] [2024-06-14 11:19:12,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86235775] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:12,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:12,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:12,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84104905] [2024-06-14 11:19:12,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:12,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:12,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:12,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:12,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:12,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:19:12,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 134 transitions, 1367 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:12,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:12,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:19:12,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:12,465 INFO L124 PetriNetUnfolderBase]: 366/652 cut-off events. [2024-06-14 11:19:12,466 INFO L125 PetriNetUnfolderBase]: For 24174/24174 co-relation queries the response was YES. [2024-06-14 11:19:12,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4291 conditions, 652 events. 366/652 cut-off events. For 24174/24174 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2760 event pairs, 52 based on Foata normal form. 2/654 useless extension candidates. Maximal degree in co-relation 4219. Up to 545 conditions per place. [2024-06-14 11:19:12,470 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 123 selfloop transitions, 27 changer transitions 0/152 dead transitions. [2024-06-14 11:19:12,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 152 transitions, 1739 flow [2024-06-14 11:19:12,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:19:12,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:19:12,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-14 11:19:12,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3506944444444444 [2024-06-14 11:19:12,473 INFO L175 Difference]: Start difference. First operand has 140 places, 134 transitions, 1367 flow. Second operand 9 states and 101 transitions. [2024-06-14 11:19:12,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 152 transitions, 1739 flow [2024-06-14 11:19:12,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 152 transitions, 1596 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-14 11:19:12,511 INFO L231 Difference]: Finished difference. Result has 142 places, 136 transitions, 1310 flow [2024-06-14 11:19:12,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1224, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1310, PETRI_PLACES=142, PETRI_TRANSITIONS=136} [2024-06-14 11:19:12,511 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 111 predicate places. [2024-06-14 11:19:12,511 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 136 transitions, 1310 flow [2024-06-14 11:19:12,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:12,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:12,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:12,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-14 11:19:12,512 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:12,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:12,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1575327222, now seen corresponding path program 4 times [2024-06-14 11:19:12,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:12,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147277732] [2024-06-14 11:19:12,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:12,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:12,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:13,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:13,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:13,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147277732] [2024-06-14 11:19:13,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147277732] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:13,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:13,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:13,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265810085] [2024-06-14 11:19:13,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:13,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:13,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:13,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:13,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:13,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:19:13,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 136 transitions, 1310 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:13,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:13,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:19:13,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:13,553 INFO L124 PetriNetUnfolderBase]: 387/693 cut-off events. [2024-06-14 11:19:13,553 INFO L125 PetriNetUnfolderBase]: For 25670/25670 co-relation queries the response was YES. [2024-06-14 11:19:13,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4390 conditions, 693 events. 387/693 cut-off events. For 25670/25670 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3026 event pairs, 53 based on Foata normal form. 2/695 useless extension candidates. Maximal degree in co-relation 4319. Up to 565 conditions per place. [2024-06-14 11:19:13,557 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 130 selfloop transitions, 29 changer transitions 0/161 dead transitions. [2024-06-14 11:19:13,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 161 transitions, 1761 flow [2024-06-14 11:19:13,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:19:13,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:19:13,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-14 11:19:13,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-14 11:19:13,558 INFO L175 Difference]: Start difference. First operand has 142 places, 136 transitions, 1310 flow. Second operand 9 states and 104 transitions. [2024-06-14 11:19:13,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 161 transitions, 1761 flow [2024-06-14 11:19:13,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 161 transitions, 1689 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-14 11:19:13,600 INFO L231 Difference]: Finished difference. Result has 148 places, 143 transitions, 1409 flow [2024-06-14 11:19:13,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1244, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1409, PETRI_PLACES=148, PETRI_TRANSITIONS=143} [2024-06-14 11:19:13,600 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 117 predicate places. [2024-06-14 11:19:13,601 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 143 transitions, 1409 flow [2024-06-14 11:19:13,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:13,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:13,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:13,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-14 11:19:13,601 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:13,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:13,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1345642487, now seen corresponding path program 3 times [2024-06-14 11:19:13,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:13,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196216667] [2024-06-14 11:19:13,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:13,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:13,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:14,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:14,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:14,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196216667] [2024-06-14 11:19:14,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196216667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:14,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:14,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:14,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588512228] [2024-06-14 11:19:14,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:14,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:14,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:14,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:14,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:14,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:19:14,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 143 transitions, 1409 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:14,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:14,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:19:14,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:14,592 INFO L124 PetriNetUnfolderBase]: 412/735 cut-off events. [2024-06-14 11:19:14,592 INFO L125 PetriNetUnfolderBase]: For 26315/26315 co-relation queries the response was YES. [2024-06-14 11:19:14,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4713 conditions, 735 events. 412/735 cut-off events. For 26315/26315 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3252 event pairs, 63 based on Foata normal form. 1/736 useless extension candidates. Maximal degree in co-relation 4638. Up to 606 conditions per place. [2024-06-14 11:19:14,597 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 132 selfloop transitions, 39 changer transitions 0/173 dead transitions. [2024-06-14 11:19:14,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 173 transitions, 1980 flow [2024-06-14 11:19:14,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:19:14,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:19:14,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-14 11:19:14,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-14 11:19:14,598 INFO L175 Difference]: Start difference. First operand has 148 places, 143 transitions, 1409 flow. Second operand 9 states and 104 transitions. [2024-06-14 11:19:14,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 173 transitions, 1980 flow [2024-06-14 11:19:14,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 173 transitions, 1921 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-14 11:19:14,642 INFO L231 Difference]: Finished difference. Result has 155 places, 157 transitions, 1641 flow [2024-06-14 11:19:14,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1354, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1641, PETRI_PLACES=155, PETRI_TRANSITIONS=157} [2024-06-14 11:19:14,643 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 124 predicate places. [2024-06-14 11:19:14,643 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 157 transitions, 1641 flow [2024-06-14 11:19:14,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:14,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:14,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:14,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-14 11:19:14,643 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:14,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:14,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1345642332, now seen corresponding path program 5 times [2024-06-14 11:19:14,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:14,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220745106] [2024-06-14 11:19:14,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:14,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:14,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:15,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:15,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:15,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220745106] [2024-06-14 11:19:15,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220745106] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:15,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:15,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:15,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245034708] [2024-06-14 11:19:15,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:15,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:15,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:15,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:15,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:15,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:19:15,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 157 transitions, 1641 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:15,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:15,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:19:15,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:15,573 INFO L124 PetriNetUnfolderBase]: 416/743 cut-off events. [2024-06-14 11:19:15,574 INFO L125 PetriNetUnfolderBase]: For 28845/28845 co-relation queries the response was YES. [2024-06-14 11:19:15,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4870 conditions, 743 events. 416/743 cut-off events. For 28845/28845 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3298 event pairs, 63 based on Foata normal form. 2/745 useless extension candidates. Maximal degree in co-relation 4792. Up to 617 conditions per place. [2024-06-14 11:19:15,578 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 136 selfloop transitions, 36 changer transitions 0/174 dead transitions. [2024-06-14 11:19:15,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 174 transitions, 2066 flow [2024-06-14 11:19:15,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:19:15,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:19:15,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-14 11:19:15,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-14 11:19:15,579 INFO L175 Difference]: Start difference. First operand has 155 places, 157 transitions, 1641 flow. Second operand 9 states and 103 transitions. [2024-06-14 11:19:15,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 174 transitions, 2066 flow [2024-06-14 11:19:15,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 174 transitions, 1991 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-06-14 11:19:15,627 INFO L231 Difference]: Finished difference. Result has 161 places, 158 transitions, 1667 flow [2024-06-14 11:19:15,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1566, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1667, PETRI_PLACES=161, PETRI_TRANSITIONS=158} [2024-06-14 11:19:15,628 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 130 predicate places. [2024-06-14 11:19:15,629 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 158 transitions, 1667 flow [2024-06-14 11:19:15,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:15,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:15,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:15,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-14 11:19:15,629 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:15,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:15,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1703524552, now seen corresponding path program 6 times [2024-06-14 11:19:15,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:15,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420473928] [2024-06-14 11:19:15,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:15,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:15,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:16,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:16,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:16,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420473928] [2024-06-14 11:19:16,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420473928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:16,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:16,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:16,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328546636] [2024-06-14 11:19:16,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:16,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:16,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:16,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:16,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:16,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:19:16,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 158 transitions, 1667 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:16,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:16,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:19:16,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:16,538 INFO L124 PetriNetUnfolderBase]: 426/763 cut-off events. [2024-06-14 11:19:16,538 INFO L125 PetriNetUnfolderBase]: For 30501/30501 co-relation queries the response was YES. [2024-06-14 11:19:16,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4995 conditions, 763 events. 426/763 cut-off events. For 30501/30501 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3439 event pairs, 60 based on Foata normal form. 2/765 useless extension candidates. Maximal degree in co-relation 4915. Up to 625 conditions per place. [2024-06-14 11:19:16,543 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 136 selfloop transitions, 37 changer transitions 0/175 dead transitions. [2024-06-14 11:19:16,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 175 transitions, 2093 flow [2024-06-14 11:19:16,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:19:16,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:19:16,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-14 11:19:16,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3506944444444444 [2024-06-14 11:19:16,544 INFO L175 Difference]: Start difference. First operand has 161 places, 158 transitions, 1667 flow. Second operand 9 states and 101 transitions. [2024-06-14 11:19:16,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 175 transitions, 2093 flow [2024-06-14 11:19:16,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 175 transitions, 2004 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-14 11:19:16,597 INFO L231 Difference]: Finished difference. Result has 164 places, 161 transitions, 1703 flow [2024-06-14 11:19:16,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1578, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1703, PETRI_PLACES=164, PETRI_TRANSITIONS=161} [2024-06-14 11:19:16,597 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 133 predicate places. [2024-06-14 11:19:16,597 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 161 transitions, 1703 flow [2024-06-14 11:19:16,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:16,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:16,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:16,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-14 11:19:16,598 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:16,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:16,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1351154814, now seen corresponding path program 1 times [2024-06-14 11:19:16,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:16,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838082934] [2024-06-14 11:19:16,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:16,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:16,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:17,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:17,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:17,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838082934] [2024-06-14 11:19:17,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838082934] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:17,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:17,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:17,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591763504] [2024-06-14 11:19:17,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:17,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:17,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:17,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:17,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:17,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:19:17,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 161 transitions, 1703 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:17,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:17,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:19:17,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:18,104 INFO L124 PetriNetUnfolderBase]: 438/783 cut-off events. [2024-06-14 11:19:18,105 INFO L125 PetriNetUnfolderBase]: For 31643/31643 co-relation queries the response was YES. [2024-06-14 11:19:18,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5119 conditions, 783 events. 438/783 cut-off events. For 31643/31643 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3572 event pairs, 62 based on Foata normal form. 2/785 useless extension candidates. Maximal degree in co-relation 5037. Up to 635 conditions per place. [2024-06-14 11:19:18,109 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 139 selfloop transitions, 40 changer transitions 0/181 dead transitions. [2024-06-14 11:19:18,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 181 transitions, 2161 flow [2024-06-14 11:19:18,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:19:18,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:19:18,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-14 11:19:18,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-14 11:19:18,110 INFO L175 Difference]: Start difference. First operand has 164 places, 161 transitions, 1703 flow. Second operand 10 states and 111 transitions. [2024-06-14 11:19:18,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 181 transitions, 2161 flow [2024-06-14 11:19:18,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 181 transitions, 2078 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-14 11:19:18,173 INFO L231 Difference]: Finished difference. Result has 171 places, 165 transitions, 1762 flow [2024-06-14 11:19:18,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1620, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1762, PETRI_PLACES=171, PETRI_TRANSITIONS=165} [2024-06-14 11:19:18,174 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 140 predicate places. [2024-06-14 11:19:18,174 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 165 transitions, 1762 flow [2024-06-14 11:19:18,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:18,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:18,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:18,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-14 11:19:18,174 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:18,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:18,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1351356624, now seen corresponding path program 2 times [2024-06-14 11:19:18,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:18,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893117961] [2024-06-14 11:19:18,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:18,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:18,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:19,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:19,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:19,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893117961] [2024-06-14 11:19:19,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893117961] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:19,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:19,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:19,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965936795] [2024-06-14 11:19:19,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:19,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:19,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:19,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:19,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:19,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:19:19,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 165 transitions, 1762 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:19,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:19,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:19:19,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:19,533 INFO L124 PetriNetUnfolderBase]: 479/850 cut-off events. [2024-06-14 11:19:19,533 INFO L125 PetriNetUnfolderBase]: For 37492/37492 co-relation queries the response was YES. [2024-06-14 11:19:19,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5702 conditions, 850 events. 479/850 cut-off events. For 37492/37492 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3919 event pairs, 65 based on Foata normal form. 2/852 useless extension candidates. Maximal degree in co-relation 5618. Up to 638 conditions per place. [2024-06-14 11:19:19,539 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 140 selfloop transitions, 52 changer transitions 0/194 dead transitions. [2024-06-14 11:19:19,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 194 transitions, 2530 flow [2024-06-14 11:19:19,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:19:19,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:19:19,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-14 11:19:19,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-14 11:19:19,540 INFO L175 Difference]: Start difference. First operand has 171 places, 165 transitions, 1762 flow. Second operand 10 states and 116 transitions. [2024-06-14 11:19:19,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 194 transitions, 2530 flow [2024-06-14 11:19:19,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 194 transitions, 2426 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-14 11:19:19,615 INFO L231 Difference]: Finished difference. Result has 176 places, 176 transitions, 1939 flow [2024-06-14 11:19:19,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1658, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1939, PETRI_PLACES=176, PETRI_TRANSITIONS=176} [2024-06-14 11:19:19,616 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 145 predicate places. [2024-06-14 11:19:19,616 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 176 transitions, 1939 flow [2024-06-14 11:19:19,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:19,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:19,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:19,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-14 11:19:19,616 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:19,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:19,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1351364064, now seen corresponding path program 3 times [2024-06-14 11:19:19,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:19,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751141787] [2024-06-14 11:19:19,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:19,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:19,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:20,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:20,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:20,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751141787] [2024-06-14 11:19:20,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751141787] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:20,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:20,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:20,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306829356] [2024-06-14 11:19:20,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:20,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:20,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:20,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:20,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:20,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:19:20,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 176 transitions, 1939 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:20,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:20,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:19:20,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:21,022 INFO L124 PetriNetUnfolderBase]: 490/868 cut-off events. [2024-06-14 11:19:21,022 INFO L125 PetriNetUnfolderBase]: For 40798/40798 co-relation queries the response was YES. [2024-06-14 11:19:21,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6010 conditions, 868 events. 490/868 cut-off events. For 40798/40798 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4037 event pairs, 60 based on Foata normal form. 2/870 useless extension candidates. Maximal degree in co-relation 5923. Up to 623 conditions per place. [2024-06-14 11:19:21,029 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 139 selfloop transitions, 56 changer transitions 0/197 dead transitions. [2024-06-14 11:19:21,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 197 transitions, 2645 flow [2024-06-14 11:19:21,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:19:21,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:19:21,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-14 11:19:21,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-14 11:19:21,029 INFO L175 Difference]: Start difference. First operand has 176 places, 176 transitions, 1939 flow. Second operand 10 states and 116 transitions. [2024-06-14 11:19:21,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 197 transitions, 2645 flow [2024-06-14 11:19:21,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 197 transitions, 2533 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-06-14 11:19:21,105 INFO L231 Difference]: Finished difference. Result has 182 places, 178 transitions, 2002 flow [2024-06-14 11:19:21,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1827, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2002, PETRI_PLACES=182, PETRI_TRANSITIONS=178} [2024-06-14 11:19:21,106 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 151 predicate places. [2024-06-14 11:19:21,106 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 178 transitions, 2002 flow [2024-06-14 11:19:21,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:21,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:21,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:21,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-14 11:19:21,106 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:21,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:21,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1351364343, now seen corresponding path program 1 times [2024-06-14 11:19:21,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:21,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190985632] [2024-06-14 11:19:21,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:21,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:21,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:22,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:22,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:22,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190985632] [2024-06-14 11:19:22,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190985632] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:22,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:22,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:19:22,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537286624] [2024-06-14 11:19:22,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:22,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:19:22,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:22,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:19:22,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:19:22,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:19:22,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 178 transitions, 2002 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:22,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:22,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:19:22,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:22,835 INFO L124 PetriNetUnfolderBase]: 494/875 cut-off events. [2024-06-14 11:19:22,835 INFO L125 PetriNetUnfolderBase]: For 42092/42092 co-relation queries the response was YES. [2024-06-14 11:19:22,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6166 conditions, 875 events. 494/875 cut-off events. For 42092/42092 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4059 event pairs, 74 based on Foata normal form. 3/878 useless extension candidates. Maximal degree in co-relation 6076. Up to 722 conditions per place. [2024-06-14 11:19:22,840 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 150 selfloop transitions, 44 changer transitions 0/196 dead transitions. [2024-06-14 11:19:22,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 196 transitions, 2510 flow [2024-06-14 11:19:22,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:19:22,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:19:22,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-14 11:19:22,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-06-14 11:19:22,844 INFO L175 Difference]: Start difference. First operand has 182 places, 178 transitions, 2002 flow. Second operand 10 states and 114 transitions. [2024-06-14 11:19:22,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 196 transitions, 2510 flow [2024-06-14 11:19:22,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 196 transitions, 2420 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-14 11:19:22,911 INFO L231 Difference]: Finished difference. Result has 186 places, 181 transitions, 2086 flow [2024-06-14 11:19:22,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1916, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2086, PETRI_PLACES=186, PETRI_TRANSITIONS=181} [2024-06-14 11:19:22,912 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 155 predicate places. [2024-06-14 11:19:22,912 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 181 transitions, 2086 flow [2024-06-14 11:19:22,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:22,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:22,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:22,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-14 11:19:22,912 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:22,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:22,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1567437474, now seen corresponding path program 4 times [2024-06-14 11:19:22,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:22,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818393655] [2024-06-14 11:19:22,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:22,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:22,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:23,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:23,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:23,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818393655] [2024-06-14 11:19:23,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818393655] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:23,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:23,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:23,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533129479] [2024-06-14 11:19:23,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:23,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:23,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:23,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:23,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:23,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:19:23,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 181 transitions, 2086 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:23,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:23,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:19:23,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:24,280 INFO L124 PetriNetUnfolderBase]: 490/869 cut-off events. [2024-06-14 11:19:24,280 INFO L125 PetriNetUnfolderBase]: For 39902/39902 co-relation queries the response was YES. [2024-06-14 11:19:24,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6074 conditions, 869 events. 490/869 cut-off events. For 39902/39902 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4042 event pairs, 72 based on Foata normal form. 2/871 useless extension candidates. Maximal degree in co-relation 5983. Up to 736 conditions per place. [2024-06-14 11:19:24,286 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 157 selfloop transitions, 39 changer transitions 0/198 dead transitions. [2024-06-14 11:19:24,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 198 transitions, 2538 flow [2024-06-14 11:19:24,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:19:24,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:19:24,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-14 11:19:24,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-14 11:19:24,287 INFO L175 Difference]: Start difference. First operand has 186 places, 181 transitions, 2086 flow. Second operand 10 states and 111 transitions. [2024-06-14 11:19:24,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 198 transitions, 2538 flow [2024-06-14 11:19:24,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 198 transitions, 2396 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-06-14 11:19:24,363 INFO L231 Difference]: Finished difference. Result has 191 places, 182 transitions, 2035 flow [2024-06-14 11:19:24,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1946, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2035, PETRI_PLACES=191, PETRI_TRANSITIONS=182} [2024-06-14 11:19:24,364 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 160 predicate places. [2024-06-14 11:19:24,364 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 182 transitions, 2035 flow [2024-06-14 11:19:24,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:24,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:24,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:24,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-14 11:19:24,364 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:24,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:24,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1294741434, now seen corresponding path program 7 times [2024-06-14 11:19:24,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:24,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036218324] [2024-06-14 11:19:24,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:24,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:24,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:24,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:24,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:24,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036218324] [2024-06-14 11:19:24,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036218324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:24,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:24,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:24,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426974428] [2024-06-14 11:19:24,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:24,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:24,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:24,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:24,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:25,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:19:25,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 182 transitions, 2035 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:25,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:25,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:19:25,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:25,379 INFO L124 PetriNetUnfolderBase]: 494/875 cut-off events. [2024-06-14 11:19:25,379 INFO L125 PetriNetUnfolderBase]: For 41313/41313 co-relation queries the response was YES. [2024-06-14 11:19:25,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6085 conditions, 875 events. 494/875 cut-off events. For 41313/41313 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4061 event pairs, 75 based on Foata normal form. 2/877 useless extension candidates. Maximal degree in co-relation 5993. Up to 736 conditions per place. [2024-06-14 11:19:25,385 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 154 selfloop transitions, 38 changer transitions 0/194 dead transitions. [2024-06-14 11:19:25,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 194 transitions, 2471 flow [2024-06-14 11:19:25,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:19:25,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:19:25,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-14 11:19:25,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34765625 [2024-06-14 11:19:25,386 INFO L175 Difference]: Start difference. First operand has 191 places, 182 transitions, 2035 flow. Second operand 8 states and 89 transitions. [2024-06-14 11:19:25,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 194 transitions, 2471 flow [2024-06-14 11:19:25,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 194 transitions, 2397 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-14 11:19:25,463 INFO L231 Difference]: Finished difference. Result has 194 places, 183 transitions, 2071 flow [2024-06-14 11:19:25,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1961, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2071, PETRI_PLACES=194, PETRI_TRANSITIONS=183} [2024-06-14 11:19:25,463 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 163 predicate places. [2024-06-14 11:19:25,463 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 183 transitions, 2071 flow [2024-06-14 11:19:25,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:25,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:25,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:25,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-14 11:19:25,464 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:25,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:25,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1647574374, now seen corresponding path program 8 times [2024-06-14 11:19:25,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:25,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174018886] [2024-06-14 11:19:25,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:25,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:25,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:26,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:26,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:26,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174018886] [2024-06-14 11:19:26,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174018886] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:26,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:26,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:26,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874716310] [2024-06-14 11:19:26,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:26,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:26,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:26,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:26,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:26,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:19:26,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 183 transitions, 2071 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:26,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:26,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:19:26,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:26,579 INFO L124 PetriNetUnfolderBase]: 498/885 cut-off events. [2024-06-14 11:19:26,579 INFO L125 PetriNetUnfolderBase]: For 43258/43258 co-relation queries the response was YES. [2024-06-14 11:19:26,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6184 conditions, 885 events. 498/885 cut-off events. For 43258/43258 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4169 event pairs, 66 based on Foata normal form. 2/887 useless extension candidates. Maximal degree in co-relation 6091. Up to 712 conditions per place. [2024-06-14 11:19:26,586 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 155 selfloop transitions, 41 changer transitions 0/198 dead transitions. [2024-06-14 11:19:26,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 198 transitions, 2539 flow [2024-06-14 11:19:26,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:19:26,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:19:26,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-14 11:19:26,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-14 11:19:26,588 INFO L175 Difference]: Start difference. First operand has 194 places, 183 transitions, 2071 flow. Second operand 8 states and 92 transitions. [2024-06-14 11:19:26,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 198 transitions, 2539 flow [2024-06-14 11:19:26,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 198 transitions, 2439 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-14 11:19:26,690 INFO L231 Difference]: Finished difference. Result has 196 places, 184 transitions, 2089 flow [2024-06-14 11:19:26,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1973, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2089, PETRI_PLACES=196, PETRI_TRANSITIONS=184} [2024-06-14 11:19:26,691 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 165 predicate places. [2024-06-14 11:19:26,691 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 184 transitions, 2089 flow [2024-06-14 11:19:26,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:26,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:26,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:26,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-14 11:19:26,691 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:26,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:26,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1647570499, now seen corresponding path program 4 times [2024-06-14 11:19:26,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:26,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650730917] [2024-06-14 11:19:26,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:26,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:26,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:27,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:27,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:27,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650730917] [2024-06-14 11:19:27,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650730917] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:27,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:27,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:27,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584259072] [2024-06-14 11:19:27,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:27,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:27,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:27,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:27,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:27,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:19:27,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 184 transitions, 2089 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:27,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:27,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:19:27,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:27,708 INFO L124 PetriNetUnfolderBase]: 496/882 cut-off events. [2024-06-14 11:19:27,708 INFO L125 PetriNetUnfolderBase]: For 40423/40423 co-relation queries the response was YES. [2024-06-14 11:19:27,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6082 conditions, 882 events. 496/882 cut-off events. For 40423/40423 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4165 event pairs, 85 based on Foata normal form. 1/883 useless extension candidates. Maximal degree in co-relation 5988. Up to 731 conditions per place. [2024-06-14 11:19:27,714 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 145 selfloop transitions, 51 changer transitions 0/198 dead transitions. [2024-06-14 11:19:27,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 198 transitions, 2537 flow [2024-06-14 11:19:27,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:19:27,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:19:27,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-14 11:19:27,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-14 11:19:27,715 INFO L175 Difference]: Start difference. First operand has 196 places, 184 transitions, 2089 flow. Second operand 8 states and 94 transitions. [2024-06-14 11:19:27,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 198 transitions, 2537 flow [2024-06-14 11:19:27,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 198 transitions, 2423 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-14 11:19:27,798 INFO L231 Difference]: Finished difference. Result has 198 places, 184 transitions, 2091 flow [2024-06-14 11:19:27,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1975, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2091, PETRI_PLACES=198, PETRI_TRANSITIONS=184} [2024-06-14 11:19:27,799 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 167 predicate places. [2024-06-14 11:19:27,799 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 184 transitions, 2091 flow [2024-06-14 11:19:27,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:27,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:27,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:27,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-14 11:19:27,800 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:27,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:27,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1647570654, now seen corresponding path program 9 times [2024-06-14 11:19:27,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:27,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938322997] [2024-06-14 11:19:27,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:27,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:27,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:28,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:28,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:28,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938322997] [2024-06-14 11:19:28,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938322997] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:28,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:28,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:28,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723355436] [2024-06-14 11:19:28,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:28,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:28,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:28,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:28,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:28,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:19:28,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 184 transitions, 2091 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:28,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:28,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:19:28,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:28,771 INFO L124 PetriNetUnfolderBase]: 500/890 cut-off events. [2024-06-14 11:19:28,771 INFO L125 PetriNetUnfolderBase]: For 41769/41769 co-relation queries the response was YES. [2024-06-14 11:19:28,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6131 conditions, 890 events. 500/890 cut-off events. For 41769/41769 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4205 event pairs, 87 based on Foata normal form. 2/892 useless extension candidates. Maximal degree in co-relation 6036. Up to 745 conditions per place. [2024-06-14 11:19:28,778 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 152 selfloop transitions, 45 changer transitions 0/199 dead transitions. [2024-06-14 11:19:28,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 199 transitions, 2563 flow [2024-06-14 11:19:28,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:19:28,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:19:28,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-14 11:19:28,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36328125 [2024-06-14 11:19:28,779 INFO L175 Difference]: Start difference. First operand has 198 places, 184 transitions, 2091 flow. Second operand 8 states and 93 transitions. [2024-06-14 11:19:28,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 199 transitions, 2563 flow [2024-06-14 11:19:28,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 199 transitions, 2390 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-14 11:19:28,870 INFO L231 Difference]: Finished difference. Result has 199 places, 185 transitions, 2044 flow [2024-06-14 11:19:28,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1918, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2044, PETRI_PLACES=199, PETRI_TRANSITIONS=185} [2024-06-14 11:19:28,870 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 168 predicate places. [2024-06-14 11:19:28,870 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 185 transitions, 2044 flow [2024-06-14 11:19:28,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:28,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:28,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:28,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-14 11:19:28,871 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:28,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:28,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1647420552, now seen corresponding path program 5 times [2024-06-14 11:19:28,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:28,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831526765] [2024-06-14 11:19:28,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:28,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:28,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:29,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:29,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:29,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831526765] [2024-06-14 11:19:29,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831526765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:29,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:29,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:29,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852352087] [2024-06-14 11:19:29,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:29,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:29,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:29,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:29,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:29,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:19:29,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 185 transitions, 2044 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:29,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:29,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:19:29,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:30,220 INFO L124 PetriNetUnfolderBase]: 506/900 cut-off events. [2024-06-14 11:19:30,220 INFO L125 PetriNetUnfolderBase]: For 41735/41735 co-relation queries the response was YES. [2024-06-14 11:19:30,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6164 conditions, 900 events. 506/900 cut-off events. For 41735/41735 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4268 event pairs, 74 based on Foata normal form. 2/902 useless extension candidates. Maximal degree in co-relation 6068. Up to 745 conditions per place. [2024-06-14 11:19:30,227 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 152 selfloop transitions, 49 changer transitions 0/203 dead transitions. [2024-06-14 11:19:30,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 203 transitions, 2554 flow [2024-06-14 11:19:30,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:19:30,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:19:30,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-14 11:19:30,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-14 11:19:30,228 INFO L175 Difference]: Start difference. First operand has 199 places, 185 transitions, 2044 flow. Second operand 9 states and 102 transitions. [2024-06-14 11:19:30,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 203 transitions, 2554 flow [2024-06-14 11:19:30,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 203 transitions, 2444 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-14 11:19:30,329 INFO L231 Difference]: Finished difference. Result has 202 places, 187 transitions, 2088 flow [2024-06-14 11:19:30,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1934, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2088, PETRI_PLACES=202, PETRI_TRANSITIONS=187} [2024-06-14 11:19:30,329 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 171 predicate places. [2024-06-14 11:19:30,329 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 187 transitions, 2088 flow [2024-06-14 11:19:30,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:30,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:30,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:30,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-14 11:19:30,330 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:30,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:30,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1642064124, now seen corresponding path program 10 times [2024-06-14 11:19:30,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:30,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990555330] [2024-06-14 11:19:30,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:30,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:30,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:30,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:30,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:30,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990555330] [2024-06-14 11:19:30,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990555330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:30,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:30,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:30,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402097177] [2024-06-14 11:19:30,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:30,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:30,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:30,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:30,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:31,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:19:31,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 187 transitions, 2088 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:31,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:31,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:19:31,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:31,289 INFO L124 PetriNetUnfolderBase]: 510/908 cut-off events. [2024-06-14 11:19:31,289 INFO L125 PetriNetUnfolderBase]: For 41815/41815 co-relation queries the response was YES. [2024-06-14 11:19:31,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6246 conditions, 908 events. 510/908 cut-off events. For 41815/41815 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4320 event pairs, 58 based on Foata normal form. 2/910 useless extension candidates. Maximal degree in co-relation 6149. Up to 738 conditions per place. [2024-06-14 11:19:31,295 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 151 selfloop transitions, 47 changer transitions 0/200 dead transitions. [2024-06-14 11:19:31,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 200 transitions, 2546 flow [2024-06-14 11:19:31,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:19:31,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:19:31,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-14 11:19:31,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-14 11:19:31,296 INFO L175 Difference]: Start difference. First operand has 202 places, 187 transitions, 2088 flow. Second operand 8 states and 90 transitions. [2024-06-14 11:19:31,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 200 transitions, 2546 flow [2024-06-14 11:19:31,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 200 transitions, 2413 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-14 11:19:31,389 INFO L231 Difference]: Finished difference. Result has 202 places, 188 transitions, 2083 flow [2024-06-14 11:19:31,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1955, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2083, PETRI_PLACES=202, PETRI_TRANSITIONS=188} [2024-06-14 11:19:31,390 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 171 predicate places. [2024-06-14 11:19:31,390 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 188 transitions, 2083 flow [2024-06-14 11:19:31,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:31,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:31,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:31,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-14 11:19:31,390 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:31,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:31,391 INFO L85 PathProgramCache]: Analyzing trace with hash 827792072, now seen corresponding path program 6 times [2024-06-14 11:19:31,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:31,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384017264] [2024-06-14 11:19:31,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:31,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:31,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:32,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:32,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:32,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384017264] [2024-06-14 11:19:32,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384017264] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:32,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:32,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:32,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235945589] [2024-06-14 11:19:32,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:32,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:32,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:32,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:32,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:32,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:19:32,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 188 transitions, 2083 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:32,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:32,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:19:32,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:32,759 INFO L124 PetriNetUnfolderBase]: 516/918 cut-off events. [2024-06-14 11:19:32,759 INFO L125 PetriNetUnfolderBase]: For 41985/41985 co-relation queries the response was YES. [2024-06-14 11:19:32,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6298 conditions, 918 events. 516/918 cut-off events. For 41985/41985 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4366 event pairs, 61 based on Foata normal form. 2/920 useless extension candidates. Maximal degree in co-relation 6201. Up to 728 conditions per place. [2024-06-14 11:19:32,765 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 149 selfloop transitions, 53 changer transitions 0/204 dead transitions. [2024-06-14 11:19:32,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 204 transitions, 2583 flow [2024-06-14 11:19:32,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:19:32,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:19:32,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-14 11:19:32,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3472222222222222 [2024-06-14 11:19:32,767 INFO L175 Difference]: Start difference. First operand has 202 places, 188 transitions, 2083 flow. Second operand 9 states and 100 transitions. [2024-06-14 11:19:32,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 204 transitions, 2583 flow [2024-06-14 11:19:32,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 204 transitions, 2467 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-14 11:19:32,854 INFO L231 Difference]: Finished difference. Result has 205 places, 190 transitions, 2133 flow [2024-06-14 11:19:32,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1967, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2133, PETRI_PLACES=205, PETRI_TRANSITIONS=190} [2024-06-14 11:19:32,854 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 174 predicate places. [2024-06-14 11:19:32,854 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 190 transitions, 2133 flow [2024-06-14 11:19:32,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:32,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:32,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:32,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-14 11:19:32,855 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:32,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:32,855 INFO L85 PathProgramCache]: Analyzing trace with hash 828001322, now seen corresponding path program 7 times [2024-06-14 11:19:32,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:32,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22507751] [2024-06-14 11:19:32,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:32,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:32,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:33,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:33,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:33,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22507751] [2024-06-14 11:19:33,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22507751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:33,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:33,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:33,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311473674] [2024-06-14 11:19:33,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:33,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:33,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:33,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:33,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:33,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:19:33,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 190 transitions, 2133 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:33,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:33,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:19:33,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:34,225 INFO L124 PetriNetUnfolderBase]: 532/944 cut-off events. [2024-06-14 11:19:34,225 INFO L125 PetriNetUnfolderBase]: For 45208/45208 co-relation queries the response was YES. [2024-06-14 11:19:34,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6635 conditions, 944 events. 532/944 cut-off events. For 45208/45208 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4538 event pairs, 57 based on Foata normal form. 2/946 useless extension candidates. Maximal degree in co-relation 6537. Up to 625 conditions per place. [2024-06-14 11:19:34,231 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 124 selfloop transitions, 83 changer transitions 0/209 dead transitions. [2024-06-14 11:19:34,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 209 transitions, 2805 flow [2024-06-14 11:19:34,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:19:34,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:19:34,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-14 11:19:34,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-14 11:19:34,233 INFO L175 Difference]: Start difference. First operand has 205 places, 190 transitions, 2133 flow. Second operand 9 states and 103 transitions. [2024-06-14 11:19:34,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 209 transitions, 2805 flow [2024-06-14 11:19:34,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 209 transitions, 2669 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-14 11:19:34,329 INFO L231 Difference]: Finished difference. Result has 207 places, 194 transitions, 2280 flow [2024-06-14 11:19:34,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1997, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2280, PETRI_PLACES=207, PETRI_TRANSITIONS=194} [2024-06-14 11:19:34,329 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 176 predicate places. [2024-06-14 11:19:34,329 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 194 transitions, 2280 flow [2024-06-14 11:19:34,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:34,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:34,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:34,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-14 11:19:34,330 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:34,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:34,330 INFO L85 PathProgramCache]: Analyzing trace with hash 828001601, now seen corresponding path program 2 times [2024-06-14 11:19:34,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:34,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778691543] [2024-06-14 11:19:34,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:34,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:34,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:35,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:35,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:35,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778691543] [2024-06-14 11:19:35,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778691543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:35,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:35,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:19:35,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553540548] [2024-06-14 11:19:35,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:35,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:19:35,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:35,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:19:35,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:19:35,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:19:35,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 194 transitions, 2280 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:35,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:35,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:19:35,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:35,892 INFO L124 PetriNetUnfolderBase]: 541/959 cut-off events. [2024-06-14 11:19:35,893 INFO L125 PetriNetUnfolderBase]: For 48391/48391 co-relation queries the response was YES. [2024-06-14 11:19:35,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6887 conditions, 959 events. 541/959 cut-off events. For 48391/48391 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4599 event pairs, 78 based on Foata normal form. 3/962 useless extension candidates. Maximal degree in co-relation 6788. Up to 764 conditions per place. [2024-06-14 11:19:35,898 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 150 selfloop transitions, 60 changer transitions 0/212 dead transitions. [2024-06-14 11:19:35,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 212 transitions, 2828 flow [2024-06-14 11:19:35,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:19:35,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:19:35,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-14 11:19:35,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-14 11:19:35,899 INFO L175 Difference]: Start difference. First operand has 207 places, 194 transitions, 2280 flow. Second operand 10 states and 112 transitions. [2024-06-14 11:19:35,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 212 transitions, 2828 flow [2024-06-14 11:19:35,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 212 transitions, 2693 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-14 11:19:36,001 INFO L231 Difference]: Finished difference. Result has 211 places, 197 transitions, 2359 flow [2024-06-14 11:19:36,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2145, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2359, PETRI_PLACES=211, PETRI_TRANSITIONS=197} [2024-06-14 11:19:36,001 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 180 predicate places. [2024-06-14 11:19:36,001 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 197 transitions, 2359 flow [2024-06-14 11:19:36,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:36,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:36,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:36,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-14 11:19:36,002 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:36,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:36,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1641856362, now seen corresponding path program 8 times [2024-06-14 11:19:36,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:36,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747976208] [2024-06-14 11:19:36,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:36,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:36,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:37,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:37,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:37,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747976208] [2024-06-14 11:19:37,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747976208] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:37,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:37,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:37,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160373589] [2024-06-14 11:19:37,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:37,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:37,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:37,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:37,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:37,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:19:37,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 197 transitions, 2359 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:37,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:37,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:19:37,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:37,535 INFO L124 PetriNetUnfolderBase]: 537/953 cut-off events. [2024-06-14 11:19:37,536 INFO L125 PetriNetUnfolderBase]: For 43624/43624 co-relation queries the response was YES. [2024-06-14 11:19:37,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6819 conditions, 953 events. 537/953 cut-off events. For 43624/43624 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4578 event pairs, 56 based on Foata normal form. 2/955 useless extension candidates. Maximal degree in co-relation 6719. Up to 708 conditions per place. [2024-06-14 11:19:37,541 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 143 selfloop transitions, 66 changer transitions 0/211 dead transitions. [2024-06-14 11:19:37,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 211 transitions, 2825 flow [2024-06-14 11:19:37,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:19:37,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:19:37,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-14 11:19:37,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3506944444444444 [2024-06-14 11:19:37,542 INFO L175 Difference]: Start difference. First operand has 211 places, 197 transitions, 2359 flow. Second operand 9 states and 101 transitions. [2024-06-14 11:19:37,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 211 transitions, 2825 flow [2024-06-14 11:19:37,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 211 transitions, 2621 flow, removed 46 selfloop flow, removed 8 redundant places. [2024-06-14 11:19:37,638 INFO L231 Difference]: Finished difference. Result has 212 places, 197 transitions, 2295 flow [2024-06-14 11:19:37,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2155, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2295, PETRI_PLACES=212, PETRI_TRANSITIONS=197} [2024-06-14 11:19:37,639 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 181 predicate places. [2024-06-14 11:19:37,639 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 197 transitions, 2295 flow [2024-06-14 11:19:37,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:37,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:37,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:37,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-14 11:19:37,639 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:37,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:37,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1514137336, now seen corresponding path program 11 times [2024-06-14 11:19:37,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:37,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237305805] [2024-06-14 11:19:37,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:37,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:37,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:38,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:38,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:38,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237305805] [2024-06-14 11:19:38,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237305805] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:38,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:38,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:38,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302672007] [2024-06-14 11:19:38,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:38,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:38,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:38,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:38,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:38,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:19:38,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 197 transitions, 2295 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:38,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:38,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:19:38,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:38,533 INFO L124 PetriNetUnfolderBase]: 534/946 cut-off events. [2024-06-14 11:19:38,533 INFO L125 PetriNetUnfolderBase]: For 41458/41458 co-relation queries the response was YES. [2024-06-14 11:19:38,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6638 conditions, 946 events. 534/946 cut-off events. For 41458/41458 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4524 event pairs, 72 based on Foata normal form. 2/948 useless extension candidates. Maximal degree in co-relation 6537. Up to 758 conditions per place. [2024-06-14 11:19:38,541 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 156 selfloop transitions, 49 changer transitions 0/207 dead transitions. [2024-06-14 11:19:38,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 207 transitions, 2735 flow [2024-06-14 11:19:38,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:19:38,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:19:38,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-14 11:19:38,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-14 11:19:38,542 INFO L175 Difference]: Start difference. First operand has 212 places, 197 transitions, 2295 flow. Second operand 8 states and 88 transitions. [2024-06-14 11:19:38,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 207 transitions, 2735 flow [2024-06-14 11:19:38,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 207 transitions, 2557 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-14 11:19:38,668 INFO L231 Difference]: Finished difference. Result has 211 places, 197 transitions, 2219 flow [2024-06-14 11:19:38,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2117, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2219, PETRI_PLACES=211, PETRI_TRANSITIONS=197} [2024-06-14 11:19:38,669 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 180 predicate places. [2024-06-14 11:19:38,669 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 197 transitions, 2219 flow [2024-06-14 11:19:38,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:38,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:38,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:38,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-14 11:19:38,669 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:38,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:38,670 INFO L85 PathProgramCache]: Analyzing trace with hash 11077087, now seen corresponding path program 3 times [2024-06-14 11:19:38,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:38,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260686275] [2024-06-14 11:19:38,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:38,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:38,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:39,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:39,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:39,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260686275] [2024-06-14 11:19:39,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260686275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:39,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:39,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:19:39,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348969706] [2024-06-14 11:19:39,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:39,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:19:39,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:39,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:19:39,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:19:40,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:19:40,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 197 transitions, 2219 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:40,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:40,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:19:40,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:40,360 INFO L124 PetriNetUnfolderBase]: 532/943 cut-off events. [2024-06-14 11:19:40,361 INFO L125 PetriNetUnfolderBase]: For 38428/38428 co-relation queries the response was YES. [2024-06-14 11:19:40,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6433 conditions, 943 events. 532/943 cut-off events. For 38428/38428 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4496 event pairs, 96 based on Foata normal form. 1/944 useless extension candidates. Maximal degree in co-relation 6332. Up to 822 conditions per place. [2024-06-14 11:19:40,368 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 164 selfloop transitions, 41 changer transitions 0/207 dead transitions. [2024-06-14 11:19:40,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 207 transitions, 2693 flow [2024-06-14 11:19:40,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:19:40,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:19:40,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-14 11:19:40,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 11:19:40,369 INFO L175 Difference]: Start difference. First operand has 211 places, 197 transitions, 2219 flow. Second operand 9 states and 96 transitions. [2024-06-14 11:19:40,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 207 transitions, 2693 flow [2024-06-14 11:19:40,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 207 transitions, 2532 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-14 11:19:40,462 INFO L231 Difference]: Finished difference. Result has 213 places, 199 transitions, 2196 flow [2024-06-14 11:19:40,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2058, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2196, PETRI_PLACES=213, PETRI_TRANSITIONS=199} [2024-06-14 11:19:40,462 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 182 predicate places. [2024-06-14 11:19:40,462 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 199 transitions, 2196 flow [2024-06-14 11:19:40,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:40,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:40,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:40,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-14 11:19:40,463 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:40,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:40,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1689839840, now seen corresponding path program 9 times [2024-06-14 11:19:40,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:40,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244010484] [2024-06-14 11:19:40,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:40,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:40,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:41,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:41,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:41,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244010484] [2024-06-14 11:19:41,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244010484] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:41,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:41,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:41,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656991918] [2024-06-14 11:19:41,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:41,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:41,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:41,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:41,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:41,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:19:41,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 199 transitions, 2196 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:41,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:41,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:19:41,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:41,762 INFO L124 PetriNetUnfolderBase]: 558/985 cut-off events. [2024-06-14 11:19:41,762 INFO L125 PetriNetUnfolderBase]: For 47955/47955 co-relation queries the response was YES. [2024-06-14 11:19:41,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6963 conditions, 985 events. 558/985 cut-off events. For 47955/47955 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4752 event pairs, 73 based on Foata normal form. 2/987 useless extension candidates. Maximal degree in co-relation 6861. Up to 755 conditions per place. [2024-06-14 11:19:41,769 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 161 selfloop transitions, 58 changer transitions 0/221 dead transitions. [2024-06-14 11:19:41,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 221 transitions, 3086 flow [2024-06-14 11:19:41,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:19:41,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:19:41,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-14 11:19:41,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-14 11:19:41,770 INFO L175 Difference]: Start difference. First operand has 213 places, 199 transitions, 2196 flow. Second operand 9 states and 105 transitions. [2024-06-14 11:19:41,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 221 transitions, 3086 flow [2024-06-14 11:19:41,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 221 transitions, 2926 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-14 11:19:41,879 INFO L231 Difference]: Finished difference. Result has 215 places, 206 transitions, 2350 flow [2024-06-14 11:19:41,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2042, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2350, PETRI_PLACES=215, PETRI_TRANSITIONS=206} [2024-06-14 11:19:41,879 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 184 predicate places. [2024-06-14 11:19:41,879 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 206 transitions, 2350 flow [2024-06-14 11:19:41,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:41,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:41,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:41,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-14 11:19:41,880 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:41,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:41,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1513922134, now seen corresponding path program 10 times [2024-06-14 11:19:41,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:41,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915086396] [2024-06-14 11:19:41,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:41,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:41,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:43,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:43,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:43,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915086396] [2024-06-14 11:19:43,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915086396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:43,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:43,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:43,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297231051] [2024-06-14 11:19:43,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:43,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:43,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:43,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:43,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:43,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:19:43,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 206 transitions, 2350 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:43,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:43,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:19:43,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:43,529 INFO L124 PetriNetUnfolderBase]: 564/995 cut-off events. [2024-06-14 11:19:43,530 INFO L125 PetriNetUnfolderBase]: For 48985/48985 co-relation queries the response was YES. [2024-06-14 11:19:43,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7116 conditions, 995 events. 564/995 cut-off events. For 48985/48985 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4810 event pairs, 72 based on Foata normal form. 1/996 useless extension candidates. Maximal degree in co-relation 7013. Up to 776 conditions per place. [2024-06-14 11:19:43,539 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 162 selfloop transitions, 63 changer transitions 0/227 dead transitions. [2024-06-14 11:19:43,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 227 transitions, 3126 flow [2024-06-14 11:19:43,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:19:43,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:19:43,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-14 11:19:43,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-14 11:19:43,542 INFO L175 Difference]: Start difference. First operand has 215 places, 206 transitions, 2350 flow. Second operand 10 states and 111 transitions. [2024-06-14 11:19:43,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 227 transitions, 3126 flow [2024-06-14 11:19:43,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 227 transitions, 2928 flow, removed 69 selfloop flow, removed 4 redundant places. [2024-06-14 11:19:43,661 INFO L231 Difference]: Finished difference. Result has 222 places, 213 transitions, 2464 flow [2024-06-14 11:19:43,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2218, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2464, PETRI_PLACES=222, PETRI_TRANSITIONS=213} [2024-06-14 11:19:43,661 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 191 predicate places. [2024-06-14 11:19:43,662 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 213 transitions, 2464 flow [2024-06-14 11:19:43,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:43,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:43,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:43,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-14 11:19:43,662 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:43,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:43,663 INFO L85 PathProgramCache]: Analyzing trace with hash 442157338, now seen corresponding path program 11 times [2024-06-14 11:19:43,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:43,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128306686] [2024-06-14 11:19:43,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:43,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:43,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:44,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:44,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:44,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128306686] [2024-06-14 11:19:44,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128306686] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:44,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:44,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:44,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146632802] [2024-06-14 11:19:44,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:44,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:44,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:44,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:44,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:44,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:19:44,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 213 transitions, 2464 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:44,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:44,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:19:44,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:45,331 INFO L124 PetriNetUnfolderBase]: 578/1018 cut-off events. [2024-06-14 11:19:45,332 INFO L125 PetriNetUnfolderBase]: For 55743/55743 co-relation queries the response was YES. [2024-06-14 11:19:45,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7554 conditions, 1018 events. 578/1018 cut-off events. For 55743/55743 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4931 event pairs, 103 based on Foata normal form. 3/1021 useless extension candidates. Maximal degree in co-relation 7448. Up to 432 conditions per place. [2024-06-14 11:19:45,340 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 138 selfloop transitions, 94 changer transitions 0/234 dead transitions. [2024-06-14 11:19:45,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 234 transitions, 3387 flow [2024-06-14 11:19:45,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:19:45,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:19:45,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-14 11:19:45,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3784722222222222 [2024-06-14 11:19:45,341 INFO L175 Difference]: Start difference. First operand has 222 places, 213 transitions, 2464 flow. Second operand 9 states and 109 transitions. [2024-06-14 11:19:45,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 234 transitions, 3387 flow [2024-06-14 11:19:45,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 234 transitions, 3149 flow, removed 61 selfloop flow, removed 7 redundant places. [2024-06-14 11:19:45,446 INFO L231 Difference]: Finished difference. Result has 225 places, 219 transitions, 2592 flow [2024-06-14 11:19:45,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2246, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2592, PETRI_PLACES=225, PETRI_TRANSITIONS=219} [2024-06-14 11:19:45,446 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 194 predicate places. [2024-06-14 11:19:45,446 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 219 transitions, 2592 flow [2024-06-14 11:19:45,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:45,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:45,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:45,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-14 11:19:45,447 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:45,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:45,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1248224854, now seen corresponding path program 12 times [2024-06-14 11:19:45,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:45,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99503947] [2024-06-14 11:19:45,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:45,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:45,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:46,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:46,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:46,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99503947] [2024-06-14 11:19:46,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99503947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:46,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:46,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:46,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350725381] [2024-06-14 11:19:46,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:46,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:46,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:46,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:46,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:46,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:19:46,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 219 transitions, 2592 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:46,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:46,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:19:46,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:46,715 INFO L124 PetriNetUnfolderBase]: 580/1022 cut-off events. [2024-06-14 11:19:46,715 INFO L125 PetriNetUnfolderBase]: For 55115/55115 co-relation queries the response was YES. [2024-06-14 11:19:46,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7522 conditions, 1022 events. 580/1022 cut-off events. For 55115/55115 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4963 event pairs, 172 based on Foata normal form. 4/1026 useless extension candidates. Maximal degree in co-relation 7414. Up to 959 conditions per place. [2024-06-14 11:19:46,724 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 208 selfloop transitions, 22 changer transitions 0/232 dead transitions. [2024-06-14 11:19:46,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 232 transitions, 3264 flow [2024-06-14 11:19:46,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:19:46,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:19:46,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-14 11:19:46,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-14 11:19:46,724 INFO L175 Difference]: Start difference. First operand has 225 places, 219 transitions, 2592 flow. Second operand 9 states and 97 transitions. [2024-06-14 11:19:46,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 232 transitions, 3264 flow [2024-06-14 11:19:46,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 232 transitions, 3156 flow, removed 36 selfloop flow, removed 4 redundant places. [2024-06-14 11:19:46,833 INFO L231 Difference]: Finished difference. Result has 231 places, 221 transitions, 2603 flow [2024-06-14 11:19:46,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2484, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2603, PETRI_PLACES=231, PETRI_TRANSITIONS=221} [2024-06-14 11:19:46,834 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 200 predicate places. [2024-06-14 11:19:46,834 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 221 transitions, 2603 flow [2024-06-14 11:19:46,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:46,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:46,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:46,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-14 11:19:46,834 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:46,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:46,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1248224575, now seen corresponding path program 4 times [2024-06-14 11:19:46,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:46,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679701637] [2024-06-14 11:19:46,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:46,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:46,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:47,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:47,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:47,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679701637] [2024-06-14 11:19:47,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679701637] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:47,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:47,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:19:47,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570658709] [2024-06-14 11:19:47,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:47,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:19:47,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:47,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:19:47,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:19:47,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:19:47,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 221 transitions, 2603 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:47,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:47,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:19:47,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:48,231 INFO L124 PetriNetUnfolderBase]: 578/1019 cut-off events. [2024-06-14 11:19:48,231 INFO L125 PetriNetUnfolderBase]: For 48742/48742 co-relation queries the response was YES. [2024-06-14 11:19:48,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7411 conditions, 1019 events. 578/1019 cut-off events. For 48742/48742 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4947 event pairs, 170 based on Foata normal form. 1/1020 useless extension candidates. Maximal degree in co-relation 7300. Up to 983 conditions per place. [2024-06-14 11:19:48,240 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 208 selfloop transitions, 20 changer transitions 0/230 dead transitions. [2024-06-14 11:19:48,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 230 transitions, 3079 flow [2024-06-14 11:19:48,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:19:48,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:19:48,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 98 transitions. [2024-06-14 11:19:48,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30625 [2024-06-14 11:19:48,241 INFO L175 Difference]: Start difference. First operand has 231 places, 221 transitions, 2603 flow. Second operand 10 states and 98 transitions. [2024-06-14 11:19:48,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 230 transitions, 3079 flow [2024-06-14 11:19:48,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 230 transitions, 2996 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-14 11:19:48,393 INFO L231 Difference]: Finished difference. Result has 234 places, 221 transitions, 2568 flow [2024-06-14 11:19:48,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2520, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2568, PETRI_PLACES=234, PETRI_TRANSITIONS=221} [2024-06-14 11:19:48,393 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 203 predicate places. [2024-06-14 11:19:48,393 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 221 transitions, 2568 flow [2024-06-14 11:19:48,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:48,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:48,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:48,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-14 11:19:48,394 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:48,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:48,394 INFO L85 PathProgramCache]: Analyzing trace with hash -205074522, now seen corresponding path program 13 times [2024-06-14 11:19:48,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:48,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988594412] [2024-06-14 11:19:48,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:48,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:48,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:49,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:49,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:49,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988594412] [2024-06-14 11:19:49,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988594412] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:49,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:49,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:49,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266836985] [2024-06-14 11:19:49,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:49,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:49,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:49,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:49,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:49,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:19:49,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 221 transitions, 2568 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:49,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:49,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:19:49,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:49,603 INFO L124 PetriNetUnfolderBase]: 599/1053 cut-off events. [2024-06-14 11:19:49,603 INFO L125 PetriNetUnfolderBase]: For 58934/58934 co-relation queries the response was YES. [2024-06-14 11:19:49,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7930 conditions, 1053 events. 599/1053 cut-off events. For 58934/58934 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 5132 event pairs, 171 based on Foata normal form. 2/1055 useless extension candidates. Maximal degree in co-relation 7818. Up to 941 conditions per place. [2024-06-14 11:19:49,611 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 209 selfloop transitions, 31 changer transitions 0/242 dead transitions. [2024-06-14 11:19:49,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 242 transitions, 3550 flow [2024-06-14 11:19:49,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:19:49,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:19:49,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-14 11:19:49,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-14 11:19:49,612 INFO L175 Difference]: Start difference. First operand has 234 places, 221 transitions, 2568 flow. Second operand 9 states and 103 transitions. [2024-06-14 11:19:49,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 242 transitions, 3550 flow [2024-06-14 11:19:49,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 242 transitions, 3500 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 11:19:49,741 INFO L231 Difference]: Finished difference. Result has 235 places, 228 transitions, 2817 flow [2024-06-14 11:19:49,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2522, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2817, PETRI_PLACES=235, PETRI_TRANSITIONS=228} [2024-06-14 11:19:49,741 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 204 predicate places. [2024-06-14 11:19:49,741 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 228 transitions, 2817 flow [2024-06-14 11:19:49,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:49,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:49,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:49,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-14 11:19:49,741 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:49,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:49,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1506779734, now seen corresponding path program 14 times [2024-06-14 11:19:49,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:49,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204472301] [2024-06-14 11:19:49,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:49,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:49,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:50,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:50,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:50,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204472301] [2024-06-14 11:19:50,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204472301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:50,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:50,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:50,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192650340] [2024-06-14 11:19:50,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:50,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:50,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:50,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:50,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:50,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:19:50,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 228 transitions, 2817 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:50,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:50,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:19:50,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:51,011 INFO L124 PetriNetUnfolderBase]: 595/1047 cut-off events. [2024-06-14 11:19:51,011 INFO L125 PetriNetUnfolderBase]: For 56110/56110 co-relation queries the response was YES. [2024-06-14 11:19:51,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7863 conditions, 1047 events. 595/1047 cut-off events. For 56110/56110 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 5111 event pairs, 172 based on Foata normal form. 2/1049 useless extension candidates. Maximal degree in co-relation 7749. Up to 940 conditions per place. [2024-06-14 11:19:51,020 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 207 selfloop transitions, 32 changer transitions 0/241 dead transitions. [2024-06-14 11:19:51,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 241 transitions, 3493 flow [2024-06-14 11:19:51,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:19:51,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:19:51,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-14 11:19:51,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-14 11:19:51,021 INFO L175 Difference]: Start difference. First operand has 235 places, 228 transitions, 2817 flow. Second operand 10 states and 107 transitions. [2024-06-14 11:19:51,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 241 transitions, 3493 flow [2024-06-14 11:19:51,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 241 transitions, 3316 flow, removed 78 selfloop flow, removed 4 redundant places. [2024-06-14 11:19:51,161 INFO L231 Difference]: Finished difference. Result has 241 places, 229 transitions, 2739 flow [2024-06-14 11:19:51,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2662, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2739, PETRI_PLACES=241, PETRI_TRANSITIONS=229} [2024-06-14 11:19:51,161 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 210 predicate places. [2024-06-14 11:19:51,161 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 229 transitions, 2739 flow [2024-06-14 11:19:51,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:51,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:51,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:51,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-14 11:19:51,161 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:51,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:51,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1254476267, now seen corresponding path program 1 times [2024-06-14 11:19:51,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:51,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013802643] [2024-06-14 11:19:51,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:51,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:51,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:51,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:51,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:51,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013802643] [2024-06-14 11:19:51,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013802643] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:51,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:51,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:19:51,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907380961] [2024-06-14 11:19:51,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:51,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:19:51,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:51,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:19:51,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:19:51,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:19:51,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 229 transitions, 2739 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:51,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:51,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:19:51,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:52,196 INFO L124 PetriNetUnfolderBase]: 616/1090 cut-off events. [2024-06-14 11:19:52,197 INFO L125 PetriNetUnfolderBase]: For 56689/56689 co-relation queries the response was YES. [2024-06-14 11:19:52,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7927 conditions, 1090 events. 616/1090 cut-off events. For 56689/56689 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5433 event pairs, 100 based on Foata normal form. 2/1092 useless extension candidates. Maximal degree in co-relation 7811. Up to 921 conditions per place. [2024-06-14 11:19:52,207 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 216 selfloop transitions, 34 changer transitions 0/252 dead transitions. [2024-06-14 11:19:52,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 252 transitions, 3340 flow [2024-06-14 11:19:52,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:19:52,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:19:52,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-14 11:19:52,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-14 11:19:52,208 INFO L175 Difference]: Start difference. First operand has 241 places, 229 transitions, 2739 flow. Second operand 10 states and 109 transitions. [2024-06-14 11:19:52,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 252 transitions, 3340 flow [2024-06-14 11:19:52,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 252 transitions, 3233 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-14 11:19:52,372 INFO L231 Difference]: Finished difference. Result has 245 places, 234 transitions, 2773 flow [2024-06-14 11:19:52,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2632, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2773, PETRI_PLACES=245, PETRI_TRANSITIONS=234} [2024-06-14 11:19:52,373 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 214 predicate places. [2024-06-14 11:19:52,373 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 234 transitions, 2773 flow [2024-06-14 11:19:52,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:52,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:52,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:52,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-14 11:19:52,373 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:52,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:52,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1762903255, now seen corresponding path program 2 times [2024-06-14 11:19:52,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:52,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614252785] [2024-06-14 11:19:52,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:52,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:52,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:53,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:53,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:53,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614252785] [2024-06-14 11:19:53,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614252785] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:53,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:53,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:19:53,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464971409] [2024-06-14 11:19:53,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:53,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:19:53,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:53,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:19:53,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:19:53,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:19:53,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 234 transitions, 2773 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:53,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:53,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:19:53,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:53,454 INFO L124 PetriNetUnfolderBase]: 633/1127 cut-off events. [2024-06-14 11:19:53,454 INFO L125 PetriNetUnfolderBase]: For 58908/58908 co-relation queries the response was YES. [2024-06-14 11:19:53,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8108 conditions, 1127 events. 633/1127 cut-off events. For 58908/58908 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5735 event pairs, 95 based on Foata normal form. 2/1129 useless extension candidates. Maximal degree in co-relation 7989. Up to 916 conditions per place. [2024-06-14 11:19:53,464 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 215 selfloop transitions, 38 changer transitions 0/255 dead transitions. [2024-06-14 11:19:53,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 255 transitions, 3367 flow [2024-06-14 11:19:53,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:19:53,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:19:53,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-14 11:19:53,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-14 11:19:53,464 INFO L175 Difference]: Start difference. First operand has 245 places, 234 transitions, 2773 flow. Second operand 10 states and 109 transitions. [2024-06-14 11:19:53,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 255 transitions, 3367 flow [2024-06-14 11:19:53,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 255 transitions, 3293 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-14 11:19:53,626 INFO L231 Difference]: Finished difference. Result has 253 places, 238 transitions, 2855 flow [2024-06-14 11:19:53,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2699, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2855, PETRI_PLACES=253, PETRI_TRANSITIONS=238} [2024-06-14 11:19:53,627 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 222 predicate places. [2024-06-14 11:19:53,627 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 238 transitions, 2855 flow [2024-06-14 11:19:53,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:53,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:53,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:53,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-14 11:19:53,628 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:53,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:53,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1208751227, now seen corresponding path program 1 times [2024-06-14 11:19:53,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:53,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794945317] [2024-06-14 11:19:53,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:53,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:53,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:54,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:54,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:54,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794945317] [2024-06-14 11:19:54,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794945317] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:54,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:54,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:19:54,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858913783] [2024-06-14 11:19:54,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:54,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:19:54,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:54,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:19:54,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:19:54,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:19:54,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 238 transitions, 2855 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:54,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:54,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:19:54,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:55,451 INFO L124 PetriNetUnfolderBase]: 642/1142 cut-off events. [2024-06-14 11:19:55,452 INFO L125 PetriNetUnfolderBase]: For 58491/58491 co-relation queries the response was YES. [2024-06-14 11:19:55,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8332 conditions, 1142 events. 642/1142 cut-off events. For 58491/58491 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5810 event pairs, 109 based on Foata normal form. 1/1143 useless extension candidates. Maximal degree in co-relation 8209. Up to 991 conditions per place. [2024-06-14 11:19:55,461 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 210 selfloop transitions, 48 changer transitions 0/260 dead transitions. [2024-06-14 11:19:55,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 260 transitions, 3549 flow [2024-06-14 11:19:55,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:19:55,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:19:55,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-14 11:19:55,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-14 11:19:55,462 INFO L175 Difference]: Start difference. First operand has 253 places, 238 transitions, 2855 flow. Second operand 10 states and 115 transitions. [2024-06-14 11:19:55,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 260 transitions, 3549 flow [2024-06-14 11:19:55,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 260 transitions, 3467 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-14 11:19:55,623 INFO L231 Difference]: Finished difference. Result has 261 places, 245 transitions, 3035 flow [2024-06-14 11:19:55,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2773, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3035, PETRI_PLACES=261, PETRI_TRANSITIONS=245} [2024-06-14 11:19:55,623 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 230 predicate places. [2024-06-14 11:19:55,623 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 245 transitions, 3035 flow [2024-06-14 11:19:55,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:55,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:55,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:55,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-14 11:19:55,624 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:55,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:55,624 INFO L85 PathProgramCache]: Analyzing trace with hash 372042309, now seen corresponding path program 2 times [2024-06-14 11:19:55,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:55,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397599640] [2024-06-14 11:19:55,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:55,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:55,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:56,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:56,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:56,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397599640] [2024-06-14 11:19:56,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397599640] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:56,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:56,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:19:56,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40750993] [2024-06-14 11:19:56,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:56,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:19:56,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:56,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:19:56,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:19:56,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:19:56,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 245 transitions, 3035 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:56,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:56,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:19:56,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:57,241 INFO L124 PetriNetUnfolderBase]: 645/1147 cut-off events. [2024-06-14 11:19:57,242 INFO L125 PetriNetUnfolderBase]: For 60105/60105 co-relation queries the response was YES. [2024-06-14 11:19:57,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8504 conditions, 1147 events. 645/1147 cut-off events. For 60105/60105 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5848 event pairs, 102 based on Foata normal form. 1/1148 useless extension candidates. Maximal degree in co-relation 8377. Up to 987 conditions per place. [2024-06-14 11:19:57,253 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 206 selfloop transitions, 54 changer transitions 0/262 dead transitions. [2024-06-14 11:19:57,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 262 transitions, 3689 flow [2024-06-14 11:19:57,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:19:57,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:19:57,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-14 11:19:57,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-14 11:19:57,254 INFO L175 Difference]: Start difference. First operand has 261 places, 245 transitions, 3035 flow. Second operand 10 states and 115 transitions. [2024-06-14 11:19:57,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 262 transitions, 3689 flow [2024-06-14 11:19:57,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 262 transitions, 3580 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-06-14 11:19:57,445 INFO L231 Difference]: Finished difference. Result has 267 places, 247 transitions, 3124 flow [2024-06-14 11:19:57,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2926, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3124, PETRI_PLACES=267, PETRI_TRANSITIONS=247} [2024-06-14 11:19:57,445 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 236 predicate places. [2024-06-14 11:19:57,445 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 247 transitions, 3124 flow [2024-06-14 11:19:57,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:57,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:57,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:57,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-14 11:19:57,446 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:57,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:57,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1137443301, now seen corresponding path program 3 times [2024-06-14 11:19:57,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:57,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117360352] [2024-06-14 11:19:57,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:57,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:57,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:58,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:58,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:58,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117360352] [2024-06-14 11:19:58,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117360352] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:58,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:58,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:19:58,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950790416] [2024-06-14 11:19:58,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:58,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:19:58,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:58,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:19:58,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:19:58,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:19:58,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 247 transitions, 3124 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:58,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:58,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:19:58,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:58,592 INFO L124 PetriNetUnfolderBase]: 653/1163 cut-off events. [2024-06-14 11:19:58,592 INFO L125 PetriNetUnfolderBase]: For 63879/63879 co-relation queries the response was YES. [2024-06-14 11:19:58,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8632 conditions, 1163 events. 653/1163 cut-off events. For 63879/63879 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5968 event pairs, 106 based on Foata normal form. 2/1165 useless extension candidates. Maximal degree in co-relation 8504. Up to 1024 conditions per place. [2024-06-14 11:19:58,603 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 222 selfloop transitions, 40 changer transitions 0/264 dead transitions. [2024-06-14 11:19:58,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 264 transitions, 3719 flow [2024-06-14 11:19:58,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:19:58,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:19:58,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-14 11:19:58,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-14 11:19:58,604 INFO L175 Difference]: Start difference. First operand has 267 places, 247 transitions, 3124 flow. Second operand 10 states and 111 transitions. [2024-06-14 11:19:58,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 264 transitions, 3719 flow [2024-06-14 11:19:58,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 264 transitions, 3563 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-14 11:19:58,814 INFO L231 Difference]: Finished difference. Result has 270 places, 249 transitions, 3086 flow [2024-06-14 11:19:58,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2968, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3086, PETRI_PLACES=270, PETRI_TRANSITIONS=249} [2024-06-14 11:19:58,814 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 239 predicate places. [2024-06-14 11:19:58,814 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 249 transitions, 3086 flow [2024-06-14 11:19:58,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:58,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:58,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:58,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-14 11:19:58,814 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:19:58,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:58,815 INFO L85 PathProgramCache]: Analyzing trace with hash 372042123, now seen corresponding path program 4 times [2024-06-14 11:19:58,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:58,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085423487] [2024-06-14 11:19:58,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:58,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:58,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:59,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:59,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:59,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085423487] [2024-06-14 11:19:59,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085423487] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:59,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:59,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:19:59,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098957311] [2024-06-14 11:19:59,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:59,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:19:59,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:59,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:19:59,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:19:59,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:19:59,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 249 transitions, 3086 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:59,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:59,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:19:59,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:00,108 INFO L124 PetriNetUnfolderBase]: 657/1171 cut-off events. [2024-06-14 11:20:00,108 INFO L125 PetriNetUnfolderBase]: For 64127/64127 co-relation queries the response was YES. [2024-06-14 11:20:00,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8633 conditions, 1171 events. 657/1171 cut-off events. For 64127/64127 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 6016 event pairs, 104 based on Foata normal form. 2/1173 useless extension candidates. Maximal degree in co-relation 8503. Up to 1018 conditions per place. [2024-06-14 11:20:00,120 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 215 selfloop transitions, 48 changer transitions 0/265 dead transitions. [2024-06-14 11:20:00,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 265 transitions, 3690 flow [2024-06-14 11:20:00,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:20:00,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:20:00,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-14 11:20:00,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-14 11:20:00,121 INFO L175 Difference]: Start difference. First operand has 270 places, 249 transitions, 3086 flow. Second operand 10 states and 113 transitions. [2024-06-14 11:20:00,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 265 transitions, 3690 flow [2024-06-14 11:20:00,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 265 transitions, 3593 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-14 11:20:00,373 INFO L231 Difference]: Finished difference. Result has 273 places, 250 transitions, 3119 flow [2024-06-14 11:20:00,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2989, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3119, PETRI_PLACES=273, PETRI_TRANSITIONS=250} [2024-06-14 11:20:00,374 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 242 predicate places. [2024-06-14 11:20:00,374 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 250 transitions, 3119 flow [2024-06-14 11:20:00,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:00,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:00,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:00,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-14 11:20:00,375 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:20:00,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:00,375 INFO L85 PathProgramCache]: Analyzing trace with hash 520175951, now seen corresponding path program 5 times [2024-06-14 11:20:00,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:00,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685883515] [2024-06-14 11:20:00,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:00,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:00,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:00,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:00,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:01,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685883515] [2024-06-14 11:20:01,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685883515] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:01,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:01,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:20:01,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848266432] [2024-06-14 11:20:01,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:01,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:20:01,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:01,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:20:01,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:20:01,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:20:01,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 250 transitions, 3119 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:01,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:01,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:20:01,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:01,430 INFO L124 PetriNetUnfolderBase]: 665/1187 cut-off events. [2024-06-14 11:20:01,431 INFO L125 PetriNetUnfolderBase]: For 66380/66380 co-relation queries the response was YES. [2024-06-14 11:20:01,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8738 conditions, 1187 events. 665/1187 cut-off events. For 66380/66380 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6129 event pairs, 118 based on Foata normal form. 2/1189 useless extension candidates. Maximal degree in co-relation 8607. Up to 1054 conditions per place. [2024-06-14 11:20:01,442 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 229 selfloop transitions, 36 changer transitions 0/267 dead transitions. [2024-06-14 11:20:01,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 267 transitions, 3718 flow [2024-06-14 11:20:01,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:20:01,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:20:01,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-14 11:20:01,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-14 11:20:01,446 INFO L175 Difference]: Start difference. First operand has 273 places, 250 transitions, 3119 flow. Second operand 10 states and 109 transitions. [2024-06-14 11:20:01,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 267 transitions, 3718 flow [2024-06-14 11:20:01,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 267 transitions, 3602 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-14 11:20:01,658 INFO L231 Difference]: Finished difference. Result has 276 places, 252 transitions, 3118 flow [2024-06-14 11:20:01,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3003, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3118, PETRI_PLACES=276, PETRI_TRANSITIONS=252} [2024-06-14 11:20:01,659 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 245 predicate places. [2024-06-14 11:20:01,659 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 252 transitions, 3118 flow [2024-06-14 11:20:01,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:01,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:01,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:01,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-14 11:20:01,659 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:20:01,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:01,659 INFO L85 PathProgramCache]: Analyzing trace with hash 371922153, now seen corresponding path program 6 times [2024-06-14 11:20:01,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:01,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800356731] [2024-06-14 11:20:01,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:01,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:01,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:02,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:02,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:02,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800356731] [2024-06-14 11:20:02,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800356731] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:02,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:02,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:20:02,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303554452] [2024-06-14 11:20:02,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:02,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:20:02,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:02,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:20:02,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:20:02,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:20:02,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 252 transitions, 3118 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:02,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:02,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:20:02,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:02,858 INFO L124 PetriNetUnfolderBase]: 669/1195 cut-off events. [2024-06-14 11:20:02,858 INFO L125 PetriNetUnfolderBase]: For 68153/68153 co-relation queries the response was YES. [2024-06-14 11:20:02,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8792 conditions, 1195 events. 669/1195 cut-off events. For 68153/68153 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6202 event pairs, 110 based on Foata normal form. 2/1197 useless extension candidates. Maximal degree in co-relation 8659. Up to 1040 conditions per place. [2024-06-14 11:20:02,870 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 227 selfloop transitions, 39 changer transitions 0/268 dead transitions. [2024-06-14 11:20:02,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 268 transitions, 3716 flow [2024-06-14 11:20:02,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:20:02,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:20:02,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-14 11:20:02,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-14 11:20:02,871 INFO L175 Difference]: Start difference. First operand has 276 places, 252 transitions, 3118 flow. Second operand 10 states and 109 transitions. [2024-06-14 11:20:02,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 268 transitions, 3716 flow [2024-06-14 11:20:03,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 268 transitions, 3624 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-14 11:20:03,102 INFO L231 Difference]: Finished difference. Result has 280 places, 253 transitions, 3142 flow [2024-06-14 11:20:03,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3026, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3142, PETRI_PLACES=280, PETRI_TRANSITIONS=253} [2024-06-14 11:20:03,103 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 249 predicate places. [2024-06-14 11:20:03,103 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 253 transitions, 3142 flow [2024-06-14 11:20:03,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:03,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:03,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:03,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-14 11:20:03,104 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:20:03,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:03,104 INFO L85 PathProgramCache]: Analyzing trace with hash 732820169, now seen corresponding path program 7 times [2024-06-14 11:20:03,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:03,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414713057] [2024-06-14 11:20:03,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:03,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:03,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:03,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:03,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:03,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414713057] [2024-06-14 11:20:03,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414713057] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:03,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:03,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:20:03,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909397720] [2024-06-14 11:20:03,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:03,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:20:03,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:03,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:20:03,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:20:03,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:20:03,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 253 transitions, 3142 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:03,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:03,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:20:03,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:04,407 INFO L124 PetriNetUnfolderBase]: 677/1211 cut-off events. [2024-06-14 11:20:04,407 INFO L125 PetriNetUnfolderBase]: For 69850/69850 co-relation queries the response was YES. [2024-06-14 11:20:04,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8897 conditions, 1211 events. 677/1211 cut-off events. For 69850/69850 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6318 event pairs, 112 based on Foata normal form. 2/1213 useless extension candidates. Maximal degree in co-relation 8763. Up to 1055 conditions per place. [2024-06-14 11:20:04,420 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 224 selfloop transitions, 44 changer transitions 0/270 dead transitions. [2024-06-14 11:20:04,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 270 transitions, 3759 flow [2024-06-14 11:20:04,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:20:04,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:20:04,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-14 11:20:04,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-14 11:20:04,422 INFO L175 Difference]: Start difference. First operand has 280 places, 253 transitions, 3142 flow. Second operand 10 states and 111 transitions. [2024-06-14 11:20:04,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 270 transitions, 3759 flow [2024-06-14 11:20:04,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 270 transitions, 3653 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-14 11:20:04,643 INFO L231 Difference]: Finished difference. Result has 283 places, 255 transitions, 3176 flow [2024-06-14 11:20:04,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3038, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3176, PETRI_PLACES=283, PETRI_TRANSITIONS=255} [2024-06-14 11:20:04,644 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 252 predicate places. [2024-06-14 11:20:04,644 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 255 transitions, 3176 flow [2024-06-14 11:20:04,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:04,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:04,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:04,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-14 11:20:04,644 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:20:04,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:04,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1987010315, now seen corresponding path program 8 times [2024-06-14 11:20:04,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:04,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431306800] [2024-06-14 11:20:04,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:04,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:04,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:05,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:05,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:05,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431306800] [2024-06-14 11:20:05,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431306800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:05,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:05,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:20:05,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903630939] [2024-06-14 11:20:05,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:05,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:20:05,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:05,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:20:05,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:20:05,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:20:05,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 255 transitions, 3176 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:05,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:05,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:20:05,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:05,770 INFO L124 PetriNetUnfolderBase]: 694/1246 cut-off events. [2024-06-14 11:20:05,771 INFO L125 PetriNetUnfolderBase]: For 70428/70428 co-relation queries the response was YES. [2024-06-14 11:20:05,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9047 conditions, 1246 events. 694/1246 cut-off events. For 70428/70428 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6614 event pairs, 78 based on Foata normal form. 2/1248 useless extension candidates. Maximal degree in co-relation 8911. Up to 998 conditions per place. [2024-06-14 11:20:05,783 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 237 selfloop transitions, 37 changer transitions 0/276 dead transitions. [2024-06-14 11:20:05,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 276 transitions, 3818 flow [2024-06-14 11:20:05,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:20:05,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:20:05,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-14 11:20:05,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.321875 [2024-06-14 11:20:05,784 INFO L175 Difference]: Start difference. First operand has 283 places, 255 transitions, 3176 flow. Second operand 10 states and 103 transitions. [2024-06-14 11:20:05,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 276 transitions, 3818 flow [2024-06-14 11:20:06,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 276 transitions, 3705 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-14 11:20:06,018 INFO L231 Difference]: Finished difference. Result has 288 places, 259 transitions, 3205 flow [2024-06-14 11:20:06,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3065, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3205, PETRI_PLACES=288, PETRI_TRANSITIONS=259} [2024-06-14 11:20:06,019 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 257 predicate places. [2024-06-14 11:20:06,019 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 259 transitions, 3205 flow [2024-06-14 11:20:06,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:06,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:06,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:06,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-14 11:20:06,019 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:20:06,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:06,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1234874415, now seen corresponding path program 9 times [2024-06-14 11:20:06,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:06,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206018678] [2024-06-14 11:20:06,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:06,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:06,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:06,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:06,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:06,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206018678] [2024-06-14 11:20:06,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206018678] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:06,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:06,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:20:06,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788179537] [2024-06-14 11:20:06,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:06,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:20:06,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:06,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:20:06,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:20:06,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:20:06,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 259 transitions, 3205 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:06,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:06,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:20:06,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:07,152 INFO L124 PetriNetUnfolderBase]: 698/1254 cut-off events. [2024-06-14 11:20:07,152 INFO L125 PetriNetUnfolderBase]: For 70368/70368 co-relation queries the response was YES. [2024-06-14 11:20:07,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9099 conditions, 1254 events. 698/1254 cut-off events. For 70368/70368 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6642 event pairs, 129 based on Foata normal form. 2/1256 useless extension candidates. Maximal degree in co-relation 8960. Up to 1111 conditions per place. [2024-06-14 11:20:07,162 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 240 selfloop transitions, 35 changer transitions 0/277 dead transitions. [2024-06-14 11:20:07,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 277 transitions, 3831 flow [2024-06-14 11:20:07,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:20:07,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:20:07,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-14 11:20:07,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-14 11:20:07,163 INFO L175 Difference]: Start difference. First operand has 288 places, 259 transitions, 3205 flow. Second operand 10 states and 112 transitions. [2024-06-14 11:20:07,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 277 transitions, 3831 flow [2024-06-14 11:20:07,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 277 transitions, 3739 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-14 11:20:07,410 INFO L231 Difference]: Finished difference. Result has 293 places, 260 transitions, 3221 flow [2024-06-14 11:20:07,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3113, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3221, PETRI_PLACES=293, PETRI_TRANSITIONS=260} [2024-06-14 11:20:07,410 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 262 predicate places. [2024-06-14 11:20:07,410 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 260 transitions, 3221 flow [2024-06-14 11:20:07,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:07,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:07,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:07,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-14 11:20:07,411 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:20:07,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:07,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1234759095, now seen corresponding path program 10 times [2024-06-14 11:20:07,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:07,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696928290] [2024-06-14 11:20:07,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:07,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:07,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:08,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:08,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:08,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696928290] [2024-06-14 11:20:08,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696928290] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:08,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:08,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:20:08,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450354319] [2024-06-14 11:20:08,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:08,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:20:08,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:08,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:20:08,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:20:08,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:20:08,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 260 transitions, 3221 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:08,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:08,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:20:08,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:08,759 INFO L124 PetriNetUnfolderBase]: 702/1262 cut-off events. [2024-06-14 11:20:08,759 INFO L125 PetriNetUnfolderBase]: For 72562/72562 co-relation queries the response was YES. [2024-06-14 11:20:08,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9159 conditions, 1262 events. 702/1262 cut-off events. For 72562/72562 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6721 event pairs, 124 based on Foata normal form. 2/1264 useless extension candidates. Maximal degree in co-relation 9020. Up to 1126 conditions per place. [2024-06-14 11:20:08,770 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 239 selfloop transitions, 36 changer transitions 0/277 dead transitions. [2024-06-14 11:20:08,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 277 transitions, 3853 flow [2024-06-14 11:20:08,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:20:08,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:20:08,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-14 11:20:08,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-14 11:20:08,771 INFO L175 Difference]: Start difference. First operand has 293 places, 260 transitions, 3221 flow. Second operand 10 states and 111 transitions. [2024-06-14 11:20:08,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 277 transitions, 3853 flow [2024-06-14 11:20:09,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 277 transitions, 3755 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-14 11:20:09,009 INFO L231 Difference]: Finished difference. Result has 295 places, 261 transitions, 3235 flow [2024-06-14 11:20:09,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3123, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3235, PETRI_PLACES=295, PETRI_TRANSITIONS=261} [2024-06-14 11:20:09,009 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 264 predicate places. [2024-06-14 11:20:09,010 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 261 transitions, 3235 flow [2024-06-14 11:20:09,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:09,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:09,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:09,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-14 11:20:09,010 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:20:09,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:09,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1234754259, now seen corresponding path program 3 times [2024-06-14 11:20:09,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:09,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859929544] [2024-06-14 11:20:09,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:09,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:09,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:10,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:10,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:10,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859929544] [2024-06-14 11:20:10,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859929544] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:10,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:10,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:20:10,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114831861] [2024-06-14 11:20:10,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:10,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:20:10,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:10,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:20:10,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:20:10,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:20:10,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 261 transitions, 3235 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:10,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:10,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:20:10,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:10,623 INFO L124 PetriNetUnfolderBase]: 705/1267 cut-off events. [2024-06-14 11:20:10,623 INFO L125 PetriNetUnfolderBase]: For 72321/72321 co-relation queries the response was YES. [2024-06-14 11:20:10,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9214 conditions, 1267 events. 705/1267 cut-off events. For 72321/72321 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 6758 event pairs, 127 based on Foata normal form. 1/1268 useless extension candidates. Maximal degree in co-relation 9074. Up to 1125 conditions per place. [2024-06-14 11:20:10,635 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 234 selfloop transitions, 43 changer transitions 0/279 dead transitions. [2024-06-14 11:20:10,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 279 transitions, 3927 flow [2024-06-14 11:20:10,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:20:10,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:20:10,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-14 11:20:10,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-14 11:20:10,636 INFO L175 Difference]: Start difference. First operand has 295 places, 261 transitions, 3235 flow. Second operand 10 states and 113 transitions. [2024-06-14 11:20:10,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 279 transitions, 3927 flow [2024-06-14 11:20:10,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 279 transitions, 3825 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-14 11:20:10,890 INFO L231 Difference]: Finished difference. Result has 297 places, 263 transitions, 3305 flow [2024-06-14 11:20:10,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3133, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3305, PETRI_PLACES=297, PETRI_TRANSITIONS=263} [2024-06-14 11:20:10,890 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 266 predicate places. [2024-06-14 11:20:10,890 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 263 transitions, 3305 flow [2024-06-14 11:20:10,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:10,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:10,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:10,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-14 11:20:10,891 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:20:10,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:10,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1234754445, now seen corresponding path program 11 times [2024-06-14 11:20:10,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:10,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102469618] [2024-06-14 11:20:10,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:10,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:10,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:11,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:11,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:11,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102469618] [2024-06-14 11:20:11,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102469618] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:11,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:11,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:20:11,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454675468] [2024-06-14 11:20:11,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:11,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:20:11,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:11,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:20:11,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:20:11,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:20:11,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 263 transitions, 3305 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:11,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:11,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:20:11,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:12,098 INFO L124 PetriNetUnfolderBase]: 709/1275 cut-off events. [2024-06-14 11:20:12,098 INFO L125 PetriNetUnfolderBase]: For 76689/76689 co-relation queries the response was YES. [2024-06-14 11:20:12,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9310 conditions, 1275 events. 709/1275 cut-off events. For 76689/76689 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6831 event pairs, 129 based on Foata normal form. 2/1277 useless extension candidates. Maximal degree in co-relation 9169. Up to 1136 conditions per place. [2024-06-14 11:20:12,110 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 238 selfloop transitions, 40 changer transitions 0/280 dead transitions. [2024-06-14 11:20:12,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 280 transitions, 3953 flow [2024-06-14 11:20:12,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:20:12,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:20:12,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-14 11:20:12,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-14 11:20:12,111 INFO L175 Difference]: Start difference. First operand has 297 places, 263 transitions, 3305 flow. Second operand 10 states and 112 transitions. [2024-06-14 11:20:12,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 280 transitions, 3953 flow [2024-06-14 11:20:12,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 280 transitions, 3817 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-14 11:20:12,351 INFO L231 Difference]: Finished difference. Result has 299 places, 264 transitions, 3292 flow [2024-06-14 11:20:12,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3169, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3292, PETRI_PLACES=299, PETRI_TRANSITIONS=264} [2024-06-14 11:20:12,352 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 268 predicate places. [2024-06-14 11:20:12,352 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 264 transitions, 3292 flow [2024-06-14 11:20:12,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:12,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:12,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:12,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-14 11:20:12,352 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:20:12,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:12,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1230105871, now seen corresponding path program 1 times [2024-06-14 11:20:12,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:12,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082069910] [2024-06-14 11:20:12,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:12,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:12,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:13,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:13,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:13,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082069910] [2024-06-14 11:20:13,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082069910] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:13,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:13,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:20:13,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922378096] [2024-06-14 11:20:13,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:13,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:20:13,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:13,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:20:13,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:20:13,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:20:13,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 264 transitions, 3292 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:13,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:13,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:20:13,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:14,129 INFO L124 PetriNetUnfolderBase]: 715/1287 cut-off events. [2024-06-14 11:20:14,130 INFO L125 PetriNetUnfolderBase]: For 78330/78330 co-relation queries the response was YES. [2024-06-14 11:20:14,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9371 conditions, 1287 events. 715/1287 cut-off events. For 78330/78330 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6918 event pairs, 127 based on Foata normal form. 2/1289 useless extension candidates. Maximal degree in co-relation 9229. Up to 1144 conditions per place. [2024-06-14 11:20:14,142 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 240 selfloop transitions, 40 changer transitions 0/282 dead transitions. [2024-06-14 11:20:14,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 282 transitions, 3960 flow [2024-06-14 11:20:14,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:20:14,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:20:14,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-14 11:20:14,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-14 11:20:14,143 INFO L175 Difference]: Start difference. First operand has 299 places, 264 transitions, 3292 flow. Second operand 10 states and 112 transitions. [2024-06-14 11:20:14,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 282 transitions, 3960 flow [2024-06-14 11:20:14,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 282 transitions, 3849 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-14 11:20:14,414 INFO L231 Difference]: Finished difference. Result has 301 places, 266 transitions, 3315 flow [2024-06-14 11:20:14,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3181, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3315, PETRI_PLACES=301, PETRI_TRANSITIONS=266} [2024-06-14 11:20:14,414 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 270 predicate places. [2024-06-14 11:20:14,414 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 266 transitions, 3315 flow [2024-06-14 11:20:14,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:14,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:14,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:14,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-14 11:20:14,415 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:20:14,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:14,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1269659783, now seen corresponding path program 12 times [2024-06-14 11:20:14,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:14,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349545908] [2024-06-14 11:20:14,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:14,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:14,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:15,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:15,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:15,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349545908] [2024-06-14 11:20:15,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349545908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:15,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:15,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:20:15,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536757470] [2024-06-14 11:20:15,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:15,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:20:15,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:15,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:20:15,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:20:15,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:20:15,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 266 transitions, 3315 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:15,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:15,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:20:15,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:15,737 INFO L124 PetriNetUnfolderBase]: 719/1295 cut-off events. [2024-06-14 11:20:15,737 INFO L125 PetriNetUnfolderBase]: For 80469/80469 co-relation queries the response was YES. [2024-06-14 11:20:15,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9443 conditions, 1295 events. 719/1295 cut-off events. For 80469/80469 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 7010 event pairs, 119 based on Foata normal form. 2/1297 useless extension candidates. Maximal degree in co-relation 9300. Up to 1147 conditions per place. [2024-06-14 11:20:15,748 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 241 selfloop transitions, 40 changer transitions 0/283 dead transitions. [2024-06-14 11:20:15,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 283 transitions, 3977 flow [2024-06-14 11:20:15,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:20:15,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:20:15,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-14 11:20:15,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-14 11:20:15,749 INFO L175 Difference]: Start difference. First operand has 301 places, 266 transitions, 3315 flow. Second operand 10 states and 110 transitions. [2024-06-14 11:20:15,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 283 transitions, 3977 flow [2024-06-14 11:20:16,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 283 transitions, 3876 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-14 11:20:16,013 INFO L231 Difference]: Finished difference. Result has 304 places, 267 transitions, 3338 flow [2024-06-14 11:20:16,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3214, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3338, PETRI_PLACES=304, PETRI_TRANSITIONS=267} [2024-06-14 11:20:16,014 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 273 predicate places. [2024-06-14 11:20:16,014 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 267 transitions, 3338 flow [2024-06-14 11:20:16,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:16,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:16,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:16,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-14 11:20:16,014 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:20:16,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:16,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1269655133, now seen corresponding path program 13 times [2024-06-14 11:20:16,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:16,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882808345] [2024-06-14 11:20:16,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:16,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:16,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:16,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:16,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:16,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882808345] [2024-06-14 11:20:16,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882808345] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:16,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:16,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:20:16,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590373481] [2024-06-14 11:20:16,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:16,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:20:16,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:16,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:20:16,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:20:16,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:20:16,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 267 transitions, 3338 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:16,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:16,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:20:16,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:17,305 INFO L124 PetriNetUnfolderBase]: 723/1303 cut-off events. [2024-06-14 11:20:17,305 INFO L125 PetriNetUnfolderBase]: For 83213/83213 co-relation queries the response was YES. [2024-06-14 11:20:17,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9550 conditions, 1303 events. 723/1303 cut-off events. For 83213/83213 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 7060 event pairs, 118 based on Foata normal form. 2/1305 useless extension candidates. Maximal degree in co-relation 9406. Up to 1155 conditions per place. [2024-06-14 11:20:17,318 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 243 selfloop transitions, 39 changer transitions 0/284 dead transitions. [2024-06-14 11:20:17,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 284 transitions, 3996 flow [2024-06-14 11:20:17,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:20:17,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:20:17,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-14 11:20:17,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-14 11:20:17,322 INFO L175 Difference]: Start difference. First operand has 304 places, 267 transitions, 3338 flow. Second operand 10 states and 109 transitions. [2024-06-14 11:20:17,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 284 transitions, 3996 flow [2024-06-14 11:20:17,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 284 transitions, 3882 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-14 11:20:17,631 INFO L231 Difference]: Finished difference. Result has 306 places, 268 transitions, 3348 flow [2024-06-14 11:20:17,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3224, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3348, PETRI_PLACES=306, PETRI_TRANSITIONS=268} [2024-06-14 11:20:17,631 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 275 predicate places. [2024-06-14 11:20:17,632 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 268 transitions, 3348 flow [2024-06-14 11:20:17,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:17,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:17,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:17,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-14 11:20:17,632 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:20:17,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:17,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1057376661, now seen corresponding path program 1 times [2024-06-14 11:20:17,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:17,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849607707] [2024-06-14 11:20:17,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:17,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:17,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:19,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:19,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:19,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849607707] [2024-06-14 11:20:19,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849607707] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:19,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:19,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:20:19,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258598627] [2024-06-14 11:20:19,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:19,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:20:19,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:19,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:20:19,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:20:19,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:20:19,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 268 transitions, 3348 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:19,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:19,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:20:19,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:19,981 INFO L124 PetriNetUnfolderBase]: 743/1347 cut-off events. [2024-06-14 11:20:19,981 INFO L125 PetriNetUnfolderBase]: For 111267/111267 co-relation queries the response was YES. [2024-06-14 11:20:19,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9783 conditions, 1347 events. 743/1347 cut-off events. For 111267/111267 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7305 event pairs, 135 based on Foata normal form. 12/1359 useless extension candidates. Maximal degree in co-relation 9638. Up to 1144 conditions per place. [2024-06-14 11:20:19,994 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 238 selfloop transitions, 46 changer transitions 6/292 dead transitions. [2024-06-14 11:20:19,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 292 transitions, 4104 flow [2024-06-14 11:20:19,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:20:19,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:20:19,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-14 11:20:19,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-14 11:20:19,995 INFO L175 Difference]: Start difference. First operand has 306 places, 268 transitions, 3348 flow. Second operand 12 states and 135 transitions. [2024-06-14 11:20:19,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 292 transitions, 4104 flow [2024-06-14 11:20:20,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 292 transitions, 3990 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-14 11:20:20,298 INFO L231 Difference]: Finished difference. Result has 310 places, 268 transitions, 3358 flow [2024-06-14 11:20:20,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3234, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3358, PETRI_PLACES=310, PETRI_TRANSITIONS=268} [2024-06-14 11:20:20,299 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 279 predicate places. [2024-06-14 11:20:20,299 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 268 transitions, 3358 flow [2024-06-14 11:20:20,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:20,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:20,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:20,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-14 11:20:20,299 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:20:20,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:20,299 INFO L85 PathProgramCache]: Analyzing trace with hash 355547911, now seen corresponding path program 2 times [2024-06-14 11:20:20,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:20,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313166527] [2024-06-14 11:20:20,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:20,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:20,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:21,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:21,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:21,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313166527] [2024-06-14 11:20:21,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313166527] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:21,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:21,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:20:21,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143471292] [2024-06-14 11:20:21,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:21,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:20:21,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:21,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:20:21,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:20:21,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:20:21,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 268 transitions, 3358 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:21,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:21,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:20:21,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:22,170 INFO L124 PetriNetUnfolderBase]: 743/1347 cut-off events. [2024-06-14 11:20:22,170 INFO L125 PetriNetUnfolderBase]: For 87403/87403 co-relation queries the response was YES. [2024-06-14 11:20:22,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9800 conditions, 1347 events. 743/1347 cut-off events. For 87403/87403 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 7342 event pairs, 126 based on Foata normal form. 2/1349 useless extension candidates. Maximal degree in co-relation 9654. Up to 1189 conditions per place. [2024-06-14 11:20:22,182 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 243 selfloop transitions, 43 changer transitions 0/288 dead transitions. [2024-06-14 11:20:22,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 288 transitions, 4060 flow [2024-06-14 11:20:22,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:20:22,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:20:22,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-14 11:20:22,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-14 11:20:22,183 INFO L175 Difference]: Start difference. First operand has 310 places, 268 transitions, 3358 flow. Second operand 11 states and 120 transitions. [2024-06-14 11:20:22,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 288 transitions, 4060 flow [2024-06-14 11:20:22,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 288 transitions, 3919 flow, removed 13 selfloop flow, removed 11 redundant places. [2024-06-14 11:20:22,472 INFO L231 Difference]: Finished difference. Result has 310 places, 270 transitions, 3360 flow [2024-06-14 11:20:22,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3217, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3360, PETRI_PLACES=310, PETRI_TRANSITIONS=270} [2024-06-14 11:20:22,472 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 279 predicate places. [2024-06-14 11:20:22,473 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 270 transitions, 3360 flow [2024-06-14 11:20:22,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:22,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:22,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:22,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-14 11:20:22,473 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:20:22,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:22,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1057622925, now seen corresponding path program 14 times [2024-06-14 11:20:22,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:22,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173046937] [2024-06-14 11:20:22,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:22,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:22,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:23,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:23,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:23,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173046937] [2024-06-14 11:20:23,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173046937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:23,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:23,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:20:23,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8226776] [2024-06-14 11:20:23,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:23,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:20:23,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:23,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:20:23,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:20:23,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:20:23,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 270 transitions, 3360 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:23,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:23,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:20:23,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:23,710 INFO L124 PetriNetUnfolderBase]: 747/1355 cut-off events. [2024-06-14 11:20:23,710 INFO L125 PetriNetUnfolderBase]: For 90108/90108 co-relation queries the response was YES. [2024-06-14 11:20:23,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9856 conditions, 1355 events. 747/1355 cut-off events. For 90108/90108 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 7411 event pairs, 126 based on Foata normal form. 2/1357 useless extension candidates. Maximal degree in co-relation 9709. Up to 1182 conditions per place. [2024-06-14 11:20:23,723 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 239 selfloop transitions, 46 changer transitions 0/287 dead transitions. [2024-06-14 11:20:23,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 287 transitions, 4034 flow [2024-06-14 11:20:23,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:20:23,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:20:23,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-14 11:20:23,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-14 11:20:23,724 INFO L175 Difference]: Start difference. First operand has 310 places, 270 transitions, 3360 flow. Second operand 10 states and 111 transitions. [2024-06-14 11:20:23,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 287 transitions, 4034 flow [2024-06-14 11:20:24,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 287 transitions, 3915 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-14 11:20:24,066 INFO L231 Difference]: Finished difference. Result has 311 places, 271 transitions, 3381 flow [2024-06-14 11:20:24,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3241, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3381, PETRI_PLACES=311, PETRI_TRANSITIONS=271} [2024-06-14 11:20:24,066 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 280 predicate places. [2024-06-14 11:20:24,066 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 271 transitions, 3381 flow [2024-06-14 11:20:24,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:24,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:24,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:24,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-14 11:20:24,066 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:20:24,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:24,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1057615981, now seen corresponding path program 3 times [2024-06-14 11:20:24,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:24,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80486014] [2024-06-14 11:20:24,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:24,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:24,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:25,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:25,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:25,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80486014] [2024-06-14 11:20:25,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80486014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:25,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:25,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:20:25,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328817130] [2024-06-14 11:20:25,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:25,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:20:25,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:25,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:20:25,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:20:25,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:20:25,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 271 transitions, 3381 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:25,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:25,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:20:25,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:25,759 INFO L124 PetriNetUnfolderBase]: 753/1365 cut-off events. [2024-06-14 11:20:25,759 INFO L125 PetriNetUnfolderBase]: For 92438/92438 co-relation queries the response was YES. [2024-06-14 11:20:25,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9955 conditions, 1365 events. 753/1365 cut-off events. For 92438/92438 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 7472 event pairs, 124 based on Foata normal form. 2/1367 useless extension candidates. Maximal degree in co-relation 9807. Up to 1149 conditions per place. [2024-06-14 11:20:25,771 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 234 selfloop transitions, 55 changer transitions 0/291 dead transitions. [2024-06-14 11:20:25,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 291 transitions, 4093 flow [2024-06-14 11:20:25,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:20:25,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:20:25,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-14 11:20:25,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-14 11:20:25,771 INFO L175 Difference]: Start difference. First operand has 311 places, 271 transitions, 3381 flow. Second operand 11 states and 123 transitions. [2024-06-14 11:20:25,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 291 transitions, 4093 flow [2024-06-14 11:20:26,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 291 transitions, 3960 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-14 11:20:26,115 INFO L231 Difference]: Finished difference. Result has 314 places, 273 transitions, 3419 flow [2024-06-14 11:20:26,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3248, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3419, PETRI_PLACES=314, PETRI_TRANSITIONS=273} [2024-06-14 11:20:26,116 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 283 predicate places. [2024-06-14 11:20:26,116 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 273 transitions, 3419 flow [2024-06-14 11:20:26,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:26,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:26,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:26,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-14 11:20:26,116 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:20:26,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:26,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1057385341, now seen corresponding path program 4 times [2024-06-14 11:20:26,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:26,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491301920] [2024-06-14 11:20:26,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:26,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:26,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:27,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:27,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:27,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491301920] [2024-06-14 11:20:27,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491301920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:27,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:27,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:20:27,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214381647] [2024-06-14 11:20:27,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:27,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:20:27,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:27,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:20:27,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:20:27,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:20:27,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 273 transitions, 3419 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:27,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:27,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:20:27,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:27,879 INFO L124 PetriNetUnfolderBase]: 749/1359 cut-off events. [2024-06-14 11:20:27,880 INFO L125 PetriNetUnfolderBase]: For 87832/87832 co-relation queries the response was YES. [2024-06-14 11:20:27,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9733 conditions, 1359 events. 749/1359 cut-off events. For 87832/87832 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 7442 event pairs, 125 based on Foata normal form. 2/1361 useless extension candidates. Maximal degree in co-relation 9584. Up to 1106 conditions per place. [2024-06-14 11:20:27,894 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 227 selfloop transitions, 60 changer transitions 0/289 dead transitions. [2024-06-14 11:20:27,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 289 transitions, 4063 flow [2024-06-14 11:20:27,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:20:27,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:20:27,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-14 11:20:27,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-14 11:20:27,894 INFO L175 Difference]: Start difference. First operand has 314 places, 273 transitions, 3419 flow. Second operand 10 states and 115 transitions. [2024-06-14 11:20:27,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 289 transitions, 4063 flow [2024-06-14 11:20:28,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 289 transitions, 3900 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-14 11:20:28,243 INFO L231 Difference]: Finished difference. Result has 315 places, 273 transitions, 3383 flow [2024-06-14 11:20:28,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3256, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3383, PETRI_PLACES=315, PETRI_TRANSITIONS=273} [2024-06-14 11:20:28,243 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 284 predicate places. [2024-06-14 11:20:28,243 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 273 transitions, 3383 flow [2024-06-14 11:20:28,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:28,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:28,244 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:28,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-14 11:20:28,244 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:20:28,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:28,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1306676629, now seen corresponding path program 15 times [2024-06-14 11:20:28,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:28,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067209656] [2024-06-14 11:20:28,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:28,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:28,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:29,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:29,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:29,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067209656] [2024-06-14 11:20:29,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067209656] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:29,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:29,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:20:29,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881024209] [2024-06-14 11:20:29,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:29,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:20:29,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:29,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:20:29,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:20:29,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:20:29,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 273 transitions, 3383 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:29,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:29,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:20:29,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:29,619 INFO L124 PetriNetUnfolderBase]: 753/1365 cut-off events. [2024-06-14 11:20:29,619 INFO L125 PetriNetUnfolderBase]: For 89835/89835 co-relation queries the response was YES. [2024-06-14 11:20:29,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9814 conditions, 1365 events. 753/1365 cut-off events. For 89835/89835 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 7466 event pairs, 92 based on Foata normal form. 2/1367 useless extension candidates. Maximal degree in co-relation 9664. Up to 1069 conditions per place. [2024-06-14 11:20:29,633 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 240 selfloop transitions, 46 changer transitions 0/288 dead transitions. [2024-06-14 11:20:29,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 288 transitions, 4031 flow [2024-06-14 11:20:29,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:20:29,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:20:29,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-06-14 11:20:29,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3263888888888889 [2024-06-14 11:20:29,634 INFO L175 Difference]: Start difference. First operand has 315 places, 273 transitions, 3383 flow. Second operand 9 states and 94 transitions. [2024-06-14 11:20:29,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 288 transitions, 4031 flow [2024-06-14 11:20:29,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 288 transitions, 3874 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-14 11:20:29,956 INFO L231 Difference]: Finished difference. Result has 316 places, 274 transitions, 3374 flow [2024-06-14 11:20:29,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3226, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3374, PETRI_PLACES=316, PETRI_TRANSITIONS=274} [2024-06-14 11:20:29,957 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 285 predicate places. [2024-06-14 11:20:29,957 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 274 transitions, 3374 flow [2024-06-14 11:20:29,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:29,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:29,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:29,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-14 11:20:29,957 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:20:29,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:29,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1348187097, now seen corresponding path program 4 times [2024-06-14 11:20:29,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:29,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626269340] [2024-06-14 11:20:29,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:29,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:29,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:31,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:31,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:31,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626269340] [2024-06-14 11:20:31,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626269340] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:31,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:31,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:20:31,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089415993] [2024-06-14 11:20:31,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:31,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:20:31,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:31,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:20:31,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:20:31,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:20:31,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 274 transitions, 3374 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:31,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:31,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:20:31,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:31,681 INFO L124 PetriNetUnfolderBase]: 756/1370 cut-off events. [2024-06-14 11:20:31,681 INFO L125 PetriNetUnfolderBase]: For 86897/86897 co-relation queries the response was YES. [2024-06-14 11:20:31,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9827 conditions, 1370 events. 756/1370 cut-off events. For 86897/86897 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 7515 event pairs, 131 based on Foata normal form. 1/1371 useless extension candidates. Maximal degree in co-relation 9676. Up to 1170 conditions per place. [2024-06-14 11:20:31,696 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 216 selfloop transitions, 71 changer transitions 0/289 dead transitions. [2024-06-14 11:20:31,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 289 transitions, 4076 flow [2024-06-14 11:20:31,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:20:31,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:20:31,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-14 11:20:31,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-14 11:20:31,697 INFO L175 Difference]: Start difference. First operand has 316 places, 274 transitions, 3374 flow. Second operand 9 states and 103 transitions. [2024-06-14 11:20:31,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 289 transitions, 4076 flow [2024-06-14 11:20:32,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 289 transitions, 3939 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-14 11:20:32,030 INFO L231 Difference]: Finished difference. Result has 317 places, 276 transitions, 3476 flow [2024-06-14 11:20:32,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3237, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3476, PETRI_PLACES=317, PETRI_TRANSITIONS=276} [2024-06-14 11:20:32,031 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 286 predicate places. [2024-06-14 11:20:32,031 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 276 transitions, 3476 flow [2024-06-14 11:20:32,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:32,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:32,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:32,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-14 11:20:32,032 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:20:32,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:32,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1348187283, now seen corresponding path program 16 times [2024-06-14 11:20:32,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:32,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144076383] [2024-06-14 11:20:32,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:32,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:32,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:32,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:32,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:32,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144076383] [2024-06-14 11:20:32,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144076383] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:32,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:32,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:20:32,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341048719] [2024-06-14 11:20:32,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:32,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:20:32,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:32,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:20:32,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:20:32,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:20:32,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 276 transitions, 3476 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:32,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:32,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:20:32,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:33,409 INFO L124 PetriNetUnfolderBase]: 760/1378 cut-off events. [2024-06-14 11:20:33,409 INFO L125 PetriNetUnfolderBase]: For 87698/87698 co-relation queries the response was YES. [2024-06-14 11:20:33,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9892 conditions, 1378 events. 760/1378 cut-off events. For 87698/87698 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7585 event pairs, 131 based on Foata normal form. 2/1380 useless extension candidates. Maximal degree in co-relation 9741. Up to 1191 conditions per place. [2024-06-14 11:20:33,424 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 227 selfloop transitions, 61 changer transitions 0/290 dead transitions. [2024-06-14 11:20:33,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 290 transitions, 4140 flow [2024-06-14 11:20:33,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:20:33,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:20:33,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-14 11:20:33,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3506944444444444 [2024-06-14 11:20:33,425 INFO L175 Difference]: Start difference. First operand has 317 places, 276 transitions, 3476 flow. Second operand 9 states and 101 transitions. [2024-06-14 11:20:33,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 290 transitions, 4140 flow [2024-06-14 11:20:33,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 290 transitions, 3957 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-14 11:20:33,748 INFO L231 Difference]: Finished difference. Result has 319 places, 277 transitions, 3468 flow [2024-06-14 11:20:33,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3293, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3468, PETRI_PLACES=319, PETRI_TRANSITIONS=277} [2024-06-14 11:20:33,749 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 288 predicate places. [2024-06-14 11:20:33,749 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 277 transitions, 3468 flow [2024-06-14 11:20:33,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:33,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:33,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:33,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-14 11:20:33,749 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:20:33,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:33,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1348307253, now seen corresponding path program 17 times [2024-06-14 11:20:33,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:33,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336036381] [2024-06-14 11:20:33,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:33,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:33,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:34,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:34,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:34,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336036381] [2024-06-14 11:20:34,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336036381] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:34,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:34,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:20:34,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736909224] [2024-06-14 11:20:34,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:34,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:20:34,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:34,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:20:34,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:20:34,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:20:34,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 277 transitions, 3468 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:34,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:34,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:20:34,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:34,946 INFO L124 PetriNetUnfolderBase]: 764/1386 cut-off events. [2024-06-14 11:20:34,946 INFO L125 PetriNetUnfolderBase]: For 88473/88473 co-relation queries the response was YES. [2024-06-14 11:20:34,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9934 conditions, 1386 events. 764/1386 cut-off events. For 88473/88473 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7643 event pairs, 137 based on Foata normal form. 2/1388 useless extension candidates. Maximal degree in co-relation 9782. Up to 1209 conditions per place. [2024-06-14 11:20:34,961 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 245 selfloop transitions, 44 changer transitions 0/291 dead transitions. [2024-06-14 11:20:34,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 291 transitions, 4120 flow [2024-06-14 11:20:34,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:20:34,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:20:34,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-14 11:20:34,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-14 11:20:34,968 INFO L175 Difference]: Start difference. First operand has 319 places, 277 transitions, 3468 flow. Second operand 9 states and 97 transitions. [2024-06-14 11:20:34,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 291 transitions, 4120 flow [2024-06-14 11:20:35,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 291 transitions, 3961 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-14 11:20:35,292 INFO L231 Difference]: Finished difference. Result has 321 places, 278 transitions, 3451 flow [2024-06-14 11:20:35,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3311, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3451, PETRI_PLACES=321, PETRI_TRANSITIONS=278} [2024-06-14 11:20:35,293 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 290 predicate places. [2024-06-14 11:20:35,293 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 278 transitions, 3451 flow [2024-06-14 11:20:35,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:35,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:35,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:35,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-14 11:20:35,293 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:20:35,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:35,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1348191933, now seen corresponding path program 18 times [2024-06-14 11:20:35,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:35,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153434324] [2024-06-14 11:20:35,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:35,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:35,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:36,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:36,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:36,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153434324] [2024-06-14 11:20:36,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153434324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:36,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:36,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:20:36,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255276376] [2024-06-14 11:20:36,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:36,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:20:36,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:36,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:20:36,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:20:36,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:20:36,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 278 transitions, 3451 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:36,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:36,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:20:36,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:36,604 INFO L124 PetriNetUnfolderBase]: 768/1394 cut-off events. [2024-06-14 11:20:36,604 INFO L125 PetriNetUnfolderBase]: For 88341/88341 co-relation queries the response was YES. [2024-06-14 11:20:36,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9941 conditions, 1394 events. 768/1394 cut-off events. For 88341/88341 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 7720 event pairs, 129 based on Foata normal form. 2/1396 useless extension candidates. Maximal degree in co-relation 9788. Up to 1210 conditions per place. [2024-06-14 11:20:36,620 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 237 selfloop transitions, 53 changer transitions 0/292 dead transitions. [2024-06-14 11:20:36,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 292 transitions, 4113 flow [2024-06-14 11:20:36,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:20:36,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:20:36,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-14 11:20:36,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-14 11:20:36,621 INFO L175 Difference]: Start difference. First operand has 321 places, 278 transitions, 3451 flow. Second operand 9 states and 99 transitions. [2024-06-14 11:20:36,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 292 transitions, 4113 flow [2024-06-14 11:20:36,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 292 transitions, 3987 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-14 11:20:36,979 INFO L231 Difference]: Finished difference. Result has 323 places, 279 transitions, 3485 flow [2024-06-14 11:20:36,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3327, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3485, PETRI_PLACES=323, PETRI_TRANSITIONS=279} [2024-06-14 11:20:36,980 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 292 predicate places. [2024-06-14 11:20:36,980 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 279 transitions, 3485 flow [2024-06-14 11:20:36,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:36,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:36,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:36,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-14 11:20:36,981 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:20:36,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:36,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1056325183, now seen corresponding path program 19 times [2024-06-14 11:20:36,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:36,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527782888] [2024-06-14 11:20:36,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:36,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:36,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:37,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:37,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:37,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527782888] [2024-06-14 11:20:37,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527782888] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:37,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:37,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:20:37,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598274566] [2024-06-14 11:20:37,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:37,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:20:37,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:37,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:20:37,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:20:37,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:20:37,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 279 transitions, 3485 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:37,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:37,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:20:37,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:38,140 INFO L124 PetriNetUnfolderBase]: 772/1402 cut-off events. [2024-06-14 11:20:38,140 INFO L125 PetriNetUnfolderBase]: For 88552/88552 co-relation queries the response was YES. [2024-06-14 11:20:38,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10006 conditions, 1402 events. 772/1402 cut-off events. For 88552/88552 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 7789 event pairs, 110 based on Foata normal form. 2/1404 useless extension candidates. Maximal degree in co-relation 9852. Up to 1192 conditions per place. [2024-06-14 11:20:38,155 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 247 selfloop transitions, 47 changer transitions 0/296 dead transitions. [2024-06-14 11:20:38,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 296 transitions, 4167 flow [2024-06-14 11:20:38,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:20:38,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:20:38,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-14 11:20:38,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3472222222222222 [2024-06-14 11:20:38,155 INFO L175 Difference]: Start difference. First operand has 323 places, 279 transitions, 3485 flow. Second operand 9 states and 100 transitions. [2024-06-14 11:20:38,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 296 transitions, 4167 flow [2024-06-14 11:20:38,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 296 transitions, 4023 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-14 11:20:38,488 INFO L231 Difference]: Finished difference. Result has 325 places, 280 transitions, 3487 flow [2024-06-14 11:20:38,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3343, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3487, PETRI_PLACES=325, PETRI_TRANSITIONS=280} [2024-06-14 11:20:38,488 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 294 predicate places. [2024-06-14 11:20:38,488 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 280 transitions, 3487 flow [2024-06-14 11:20:38,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:38,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:38,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:38,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-14 11:20:38,488 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:20:38,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:38,489 INFO L85 PathProgramCache]: Analyzing trace with hash 464918851, now seen corresponding path program 20 times [2024-06-14 11:20:38,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:38,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868614811] [2024-06-14 11:20:38,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:38,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:38,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:39,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:39,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:39,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868614811] [2024-06-14 11:20:39,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868614811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:39,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:39,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:20:39,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794971855] [2024-06-14 11:20:39,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:39,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:20:39,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:39,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:20:39,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:20:39,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:20:39,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 280 transitions, 3487 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:39,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:39,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:20:39,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:39,663 INFO L124 PetriNetUnfolderBase]: 776/1410 cut-off events. [2024-06-14 11:20:39,663 INFO L125 PetriNetUnfolderBase]: For 88719/88719 co-relation queries the response was YES. [2024-06-14 11:20:39,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10041 conditions, 1410 events. 776/1410 cut-off events. For 88719/88719 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 7844 event pairs, 148 based on Foata normal form. 2/1412 useless extension candidates. Maximal degree in co-relation 9886. Up to 1249 conditions per place. [2024-06-14 11:20:39,679 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 247 selfloop transitions, 48 changer transitions 0/297 dead transitions. [2024-06-14 11:20:39,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 297 transitions, 4179 flow [2024-06-14 11:20:39,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:20:39,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:20:39,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-14 11:20:39,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3506944444444444 [2024-06-14 11:20:39,680 INFO L175 Difference]: Start difference. First operand has 325 places, 280 transitions, 3487 flow. Second operand 9 states and 101 transitions. [2024-06-14 11:20:39,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 297 transitions, 4179 flow [2024-06-14 11:20:40,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 297 transitions, 4045 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-14 11:20:40,047 INFO L231 Difference]: Finished difference. Result has 327 places, 281 transitions, 3501 flow [2024-06-14 11:20:40,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3355, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3501, PETRI_PLACES=327, PETRI_TRANSITIONS=281} [2024-06-14 11:20:40,048 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 296 predicate places. [2024-06-14 11:20:40,048 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 281 transitions, 3501 flow [2024-06-14 11:20:40,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:40,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:40,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:40,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-14 11:20:40,048 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:20:40,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:40,049 INFO L85 PathProgramCache]: Analyzing trace with hash 464923687, now seen corresponding path program 5 times [2024-06-14 11:20:40,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:40,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580676303] [2024-06-14 11:20:40,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:40,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:40,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:41,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:41,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:41,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580676303] [2024-06-14 11:20:41,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580676303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:41,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:41,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:20:41,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817539497] [2024-06-14 11:20:41,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:41,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:20:41,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:41,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:20:41,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:20:41,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:20:41,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 281 transitions, 3501 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:41,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:41,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:20:41,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:41,789 INFO L124 PetriNetUnfolderBase]: 774/1407 cut-off events. [2024-06-14 11:20:41,790 INFO L125 PetriNetUnfolderBase]: For 81692/81692 co-relation queries the response was YES. [2024-06-14 11:20:41,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9851 conditions, 1407 events. 774/1407 cut-off events. For 81692/81692 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 7839 event pairs, 146 based on Foata normal form. 1/1408 useless extension candidates. Maximal degree in co-relation 9695. Up to 1234 conditions per place. [2024-06-14 11:20:41,805 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 237 selfloop transitions, 60 changer transitions 0/299 dead transitions. [2024-06-14 11:20:41,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 299 transitions, 4243 flow [2024-06-14 11:20:41,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:20:41,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:20:41,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-14 11:20:41,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-14 11:20:41,807 INFO L175 Difference]: Start difference. First operand has 327 places, 281 transitions, 3501 flow. Second operand 9 states and 103 transitions. [2024-06-14 11:20:41,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 299 transitions, 4243 flow [2024-06-14 11:20:42,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 299 transitions, 4109 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-14 11:20:42,219 INFO L231 Difference]: Finished difference. Result has 329 places, 283 transitions, 3579 flow [2024-06-14 11:20:42,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3367, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3579, PETRI_PLACES=329, PETRI_TRANSITIONS=283} [2024-06-14 11:20:42,220 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 298 predicate places. [2024-06-14 11:20:42,220 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 283 transitions, 3579 flow [2024-06-14 11:20:42,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:42,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:42,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:42,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-14 11:20:42,220 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:20:42,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:42,221 INFO L85 PathProgramCache]: Analyzing trace with hash 464923501, now seen corresponding path program 21 times [2024-06-14 11:20:42,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:42,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144882283] [2024-06-14 11:20:42,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:42,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:42,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:43,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:43,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:43,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144882283] [2024-06-14 11:20:43,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144882283] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:43,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:43,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:20:43,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645022055] [2024-06-14 11:20:43,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:43,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:20:43,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:43,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:20:43,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:20:43,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:20:43,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 283 transitions, 3579 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:43,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:43,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:20:43,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:43,598 INFO L124 PetriNetUnfolderBase]: 778/1415 cut-off events. [2024-06-14 11:20:43,598 INFO L125 PetriNetUnfolderBase]: For 84719/84719 co-relation queries the response was YES. [2024-06-14 11:20:43,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9927 conditions, 1415 events. 778/1415 cut-off events. For 84719/84719 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 7892 event pairs, 148 based on Foata normal form. 2/1417 useless extension candidates. Maximal degree in co-relation 9770. Up to 1248 conditions per place. [2024-06-14 11:20:43,612 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 244 selfloop transitions, 54 changer transitions 0/300 dead transitions. [2024-06-14 11:20:43,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 300 transitions, 4283 flow [2024-06-14 11:20:43,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:20:43,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:20:43,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-14 11:20:43,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-14 11:20:43,613 INFO L175 Difference]: Start difference. First operand has 329 places, 283 transitions, 3579 flow. Second operand 9 states and 102 transitions. [2024-06-14 11:20:43,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 300 transitions, 4283 flow [2024-06-14 11:20:43,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 300 transitions, 4117 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-14 11:20:43,964 INFO L231 Difference]: Finished difference. Result has 331 places, 284 transitions, 3573 flow [2024-06-14 11:20:43,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3413, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3573, PETRI_PLACES=331, PETRI_TRANSITIONS=284} [2024-06-14 11:20:43,965 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 300 predicate places. [2024-06-14 11:20:43,965 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 284 transitions, 3573 flow [2024-06-14 11:20:43,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:43,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:43,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:43,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-14 11:20:43,965 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:20:43,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:43,966 INFO L85 PathProgramCache]: Analyzing trace with hash 469572075, now seen corresponding path program 5 times [2024-06-14 11:20:43,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:43,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789991610] [2024-06-14 11:20:43,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:43,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:43,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:45,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:45,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:45,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789991610] [2024-06-14 11:20:45,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789991610] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:45,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:45,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:20:45,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964015606] [2024-06-14 11:20:45,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:45,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:20:45,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:45,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:20:45,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:20:45,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:20:45,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 284 transitions, 3573 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:45,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:45,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:20:45,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:45,886 INFO L124 PetriNetUnfolderBase]: 784/1427 cut-off events. [2024-06-14 11:20:45,886 INFO L125 PetriNetUnfolderBase]: For 84924/84924 co-relation queries the response was YES. [2024-06-14 11:20:45,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9991 conditions, 1427 events. 784/1427 cut-off events. For 84924/84924 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 7962 event pairs, 143 based on Foata normal form. 2/1429 useless extension candidates. Maximal degree in co-relation 9833. Up to 1254 conditions per place. [2024-06-14 11:20:45,903 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 249 selfloop transitions, 51 changer transitions 0/302 dead transitions. [2024-06-14 11:20:45,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 302 transitions, 4313 flow [2024-06-14 11:20:45,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:20:45,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:20:45,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-14 11:20:45,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-14 11:20:45,904 INFO L175 Difference]: Start difference. First operand has 331 places, 284 transitions, 3573 flow. Second operand 9 states and 103 transitions. [2024-06-14 11:20:45,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 302 transitions, 4313 flow [2024-06-14 11:20:46,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 302 transitions, 4169 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-14 11:20:46,229 INFO L231 Difference]: Finished difference. Result has 333 places, 286 transitions, 3611 flow [2024-06-14 11:20:46,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3429, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3611, PETRI_PLACES=333, PETRI_TRANSITIONS=286} [2024-06-14 11:20:46,229 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 302 predicate places. [2024-06-14 11:20:46,229 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 286 transitions, 3611 flow [2024-06-14 11:20:46,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:46,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:46,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:46,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-14 11:20:46,230 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:20:46,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:46,230 INFO L85 PathProgramCache]: Analyzing trace with hash 635625931, now seen corresponding path program 22 times [2024-06-14 11:20:46,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:46,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876783168] [2024-06-14 11:20:46,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:46,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:46,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:47,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:47,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:47,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876783168] [2024-06-14 11:20:47,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876783168] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:47,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:47,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:20:47,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294324060] [2024-06-14 11:20:47,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:47,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:20:47,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:47,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:20:47,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:20:47,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:20:47,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 286 transitions, 3611 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:47,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:47,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:20:47,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:47,564 INFO L124 PetriNetUnfolderBase]: 788/1435 cut-off events. [2024-06-14 11:20:47,564 INFO L125 PetriNetUnfolderBase]: For 84885/84885 co-relation queries the response was YES. [2024-06-14 11:20:47,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10042 conditions, 1435 events. 788/1435 cut-off events. For 84885/84885 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 8034 event pairs, 123 based on Foata normal form. 2/1437 useless extension candidates. Maximal degree in co-relation 9883. Up to 1247 conditions per place. [2024-06-14 11:20:47,581 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 248 selfloop transitions, 51 changer transitions 0/301 dead transitions. [2024-06-14 11:20:47,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 301 transitions, 4307 flow [2024-06-14 11:20:47,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:20:47,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:20:47,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-14 11:20:47,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-14 11:20:47,582 INFO L175 Difference]: Start difference. First operand has 333 places, 286 transitions, 3611 flow. Second operand 9 states and 99 transitions. [2024-06-14 11:20:47,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 301 transitions, 4307 flow [2024-06-14 11:20:47,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 301 transitions, 4161 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-14 11:20:47,914 INFO L231 Difference]: Finished difference. Result has 334 places, 287 transitions, 3617 flow [2024-06-14 11:20:47,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3465, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3617, PETRI_PLACES=334, PETRI_TRANSITIONS=287} [2024-06-14 11:20:47,914 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 303 predicate places. [2024-06-14 11:20:47,914 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 287 transitions, 3617 flow [2024-06-14 11:20:47,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:47,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:47,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:47,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-14 11:20:47,914 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:20:47,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:47,914 INFO L85 PathProgramCache]: Analyzing trace with hash 635621281, now seen corresponding path program 23 times [2024-06-14 11:20:47,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:47,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603435714] [2024-06-14 11:20:47,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:47,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:47,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:48,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:48,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:48,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603435714] [2024-06-14 11:20:48,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603435714] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:48,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:48,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:20:48,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742103523] [2024-06-14 11:20:48,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:48,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:20:48,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:48,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:20:48,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:20:48,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:20:48,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 287 transitions, 3617 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:48,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:48,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:20:48,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:49,290 INFO L124 PetriNetUnfolderBase]: 792/1443 cut-off events. [2024-06-14 11:20:49,290 INFO L125 PetriNetUnfolderBase]: For 85450/85450 co-relation queries the response was YES. [2024-06-14 11:20:49,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10104 conditions, 1443 events. 792/1443 cut-off events. For 85450/85450 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 8071 event pairs, 119 based on Foata normal form. 2/1445 useless extension candidates. Maximal degree in co-relation 9945. Up to 1255 conditions per place. [2024-06-14 11:20:49,306 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 251 selfloop transitions, 49 changer transitions 0/302 dead transitions. [2024-06-14 11:20:49,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 302 transitions, 4309 flow [2024-06-14 11:20:49,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:20:49,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:20:49,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-14 11:20:49,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2024-06-14 11:20:49,307 INFO L175 Difference]: Start difference. First operand has 334 places, 287 transitions, 3617 flow. Second operand 9 states and 98 transitions. [2024-06-14 11:20:49,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 302 transitions, 4309 flow [2024-06-14 11:20:49,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 302 transitions, 4167 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-14 11:20:49,646 INFO L231 Difference]: Finished difference. Result has 336 places, 288 transitions, 3625 flow [2024-06-14 11:20:49,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3477, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3625, PETRI_PLACES=336, PETRI_TRANSITIONS=288} [2024-06-14 11:20:49,647 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 305 predicate places. [2024-06-14 11:20:49,647 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 288 transitions, 3625 flow [2024-06-14 11:20:49,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:49,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:49,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:49,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-14 11:20:49,647 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:20:49,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:49,647 INFO L85 PathProgramCache]: Analyzing trace with hash 635805855, now seen corresponding path program 6 times [2024-06-14 11:20:49,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:49,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414185919] [2024-06-14 11:20:49,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:49,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:49,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:50,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:50,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:50,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414185919] [2024-06-14 11:20:50,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414185919] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:50,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:50,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:20:50,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077995565] [2024-06-14 11:20:50,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:50,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:20:50,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:50,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:20:50,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:20:51,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:20:51,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 288 transitions, 3625 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:51,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:51,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:20:51,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:51,578 INFO L124 PetriNetUnfolderBase]: 798/1453 cut-off events. [2024-06-14 11:20:51,578 INFO L125 PetriNetUnfolderBase]: For 85222/85222 co-relation queries the response was YES. [2024-06-14 11:20:51,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10147 conditions, 1453 events. 798/1453 cut-off events. For 85222/85222 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 8128 event pairs, 123 based on Foata normal form. 2/1455 useless extension candidates. Maximal degree in co-relation 9987. Up to 1245 conditions per place. [2024-06-14 11:20:51,594 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 247 selfloop transitions, 55 changer transitions 0/304 dead transitions. [2024-06-14 11:20:51,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 304 transitions, 4363 flow [2024-06-14 11:20:51,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:20:51,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:20:51,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-14 11:20:51,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3506944444444444 [2024-06-14 11:20:51,595 INFO L175 Difference]: Start difference. First operand has 336 places, 288 transitions, 3625 flow. Second operand 9 states and 101 transitions. [2024-06-14 11:20:51,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 304 transitions, 4363 flow [2024-06-14 11:20:51,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 304 transitions, 4227 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-14 11:20:51,932 INFO L231 Difference]: Finished difference. Result has 338 places, 290 transitions, 3683 flow [2024-06-14 11:20:51,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3489, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3683, PETRI_PLACES=338, PETRI_TRANSITIONS=290} [2024-06-14 11:20:51,932 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 307 predicate places. [2024-06-14 11:20:51,933 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 290 transitions, 3683 flow [2024-06-14 11:20:51,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:51,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:51,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:51,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-14 11:20:51,933 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:20:51,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:51,933 INFO L85 PathProgramCache]: Analyzing trace with hash -101761159, now seen corresponding path program 7 times [2024-06-14 11:20:51,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:51,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233372398] [2024-06-14 11:20:51,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:51,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:51,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:53,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:53,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:53,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233372398] [2024-06-14 11:20:53,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233372398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:53,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:53,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:20:53,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497702166] [2024-06-14 11:20:53,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:53,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:20:53,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:53,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:20:53,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:20:53,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:20:53,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 290 transitions, 3683 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:53,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:53,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:20:53,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:53,894 INFO L124 PetriNetUnfolderBase]: 820/1489 cut-off events. [2024-06-14 11:20:53,894 INFO L125 PetriNetUnfolderBase]: For 92032/92032 co-relation queries the response was YES. [2024-06-14 11:20:53,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10617 conditions, 1489 events. 820/1489 cut-off events. For 92032/92032 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 8376 event pairs, 120 based on Foata normal form. 2/1491 useless extension candidates. Maximal degree in co-relation 10456. Up to 1069 conditions per place. [2024-06-14 11:20:53,911 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 206 selfloop transitions, 105 changer transitions 0/313 dead transitions. [2024-06-14 11:20:53,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 313 transitions, 4705 flow [2024-06-14 11:20:53,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:20:53,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:20:53,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-14 11:20:53,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-14 11:20:53,912 INFO L175 Difference]: Start difference. First operand has 338 places, 290 transitions, 3683 flow. Second operand 10 states and 113 transitions. [2024-06-14 11:20:53,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 313 transitions, 4705 flow [2024-06-14 11:20:54,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 313 transitions, 4544 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-14 11:20:54,306 INFO L231 Difference]: Finished difference. Result has 340 places, 296 transitions, 3912 flow [2024-06-14 11:20:54,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3524, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3912, PETRI_PLACES=340, PETRI_TRANSITIONS=296} [2024-06-14 11:20:54,306 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 309 predicate places. [2024-06-14 11:20:54,306 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 296 transitions, 3912 flow [2024-06-14 11:20:54,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:54,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:54,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:54,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-14 11:20:54,306 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:20:54,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:54,307 INFO L85 PathProgramCache]: Analyzing trace with hash -101752479, now seen corresponding path program 2 times [2024-06-14 11:20:54,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:54,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989549336] [2024-06-14 11:20:54,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:54,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:54,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:55,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:55,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:55,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989549336] [2024-06-14 11:20:55,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989549336] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:55,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:55,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:20:55,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997529167] [2024-06-14 11:20:55,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:55,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:20:55,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:55,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:20:55,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:20:55,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:20:55,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 296 transitions, 3912 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:55,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:55,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:20:55,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:56,628 INFO L124 PetriNetUnfolderBase]: 840/1533 cut-off events. [2024-06-14 11:20:56,628 INFO L125 PetriNetUnfolderBase]: For 121948/121948 co-relation queries the response was YES. [2024-06-14 11:20:56,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11005 conditions, 1533 events. 840/1533 cut-off events. For 121948/121948 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 8657 event pairs, 156 based on Foata normal form. 12/1545 useless extension candidates. Maximal degree in co-relation 10844. Up to 1250 conditions per place. [2024-06-14 11:20:56,643 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 250 selfloop transitions, 60 changer transitions 6/318 dead transitions. [2024-06-14 11:20:56,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 318 transitions, 4714 flow [2024-06-14 11:20:56,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:20:56,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:20:56,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-14 11:20:56,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-14 11:20:56,644 INFO L175 Difference]: Start difference. First operand has 340 places, 296 transitions, 3912 flow. Second operand 11 states and 124 transitions. [2024-06-14 11:20:56,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 318 transitions, 4714 flow [2024-06-14 11:20:57,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 318 transitions, 4542 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-06-14 11:20:57,029 INFO L231 Difference]: Finished difference. Result has 345 places, 296 transitions, 3896 flow [2024-06-14 11:20:57,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3740, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3896, PETRI_PLACES=345, PETRI_TRANSITIONS=296} [2024-06-14 11:20:57,029 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 314 predicate places. [2024-06-14 11:20:57,029 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 296 transitions, 3896 flow [2024-06-14 11:20:57,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:57,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:57,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:57,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-14 11:20:57,029 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:20:57,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:57,030 INFO L85 PathProgramCache]: Analyzing trace with hash -101998743, now seen corresponding path program 24 times [2024-06-14 11:20:57,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:57,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494709223] [2024-06-14 11:20:57,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:57,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:57,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:57,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:57,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:57,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494709223] [2024-06-14 11:20:57,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494709223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:57,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:57,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:20:57,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259554064] [2024-06-14 11:20:57,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:57,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:20:57,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:57,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:20:57,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:20:57,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:20:57,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 296 transitions, 3896 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:57,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:57,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:20:57,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:58,333 INFO L124 PetriNetUnfolderBase]: 838/1531 cut-off events. [2024-06-14 11:20:58,333 INFO L125 PetriNetUnfolderBase]: For 94808/94808 co-relation queries the response was YES. [2024-06-14 11:20:58,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11062 conditions, 1531 events. 838/1531 cut-off events. For 94808/94808 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 8694 event pairs, 128 based on Foata normal form. 2/1533 useless extension candidates. Maximal degree in co-relation 10899. Up to 1288 conditions per place. [2024-06-14 11:20:58,352 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 245 selfloop transitions, 64 changer transitions 0/311 dead transitions. [2024-06-14 11:20:58,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 311 transitions, 4612 flow [2024-06-14 11:20:58,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:20:58,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:20:58,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-14 11:20:58,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3472222222222222 [2024-06-14 11:20:58,353 INFO L175 Difference]: Start difference. First operand has 345 places, 296 transitions, 3896 flow. Second operand 9 states and 100 transitions. [2024-06-14 11:20:58,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 311 transitions, 4612 flow [2024-06-14 11:20:58,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 311 transitions, 4466 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-14 11:20:58,765 INFO L231 Difference]: Finished difference. Result has 345 places, 297 transitions, 3928 flow [2024-06-14 11:20:58,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3750, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3928, PETRI_PLACES=345, PETRI_TRANSITIONS=297} [2024-06-14 11:20:58,766 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 314 predicate places. [2024-06-14 11:20:58,766 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 297 transitions, 3928 flow [2024-06-14 11:20:58,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:58,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:58,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:58,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-14 11:20:58,766 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:20:58,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:58,767 INFO L85 PathProgramCache]: Analyzing trace with hash -101752789, now seen corresponding path program 8 times [2024-06-14 11:20:58,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:58,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158780189] [2024-06-14 11:20:58,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:58,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:58,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:00,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:00,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:00,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158780189] [2024-06-14 11:21:00,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158780189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:00,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:00,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:21:00,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249402132] [2024-06-14 11:21:00,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:00,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:21:00,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:00,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:21:00,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:21:00,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:21:00,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 297 transitions, 3928 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:00,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:00,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:21:00,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:01,344 INFO L124 PetriNetUnfolderBase]: 844/1541 cut-off events. [2024-06-14 11:21:01,344 INFO L125 PetriNetUnfolderBase]: For 94786/94786 co-relation queries the response was YES. [2024-06-14 11:21:01,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11151 conditions, 1541 events. 844/1541 cut-off events. For 94786/94786 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 8734 event pairs, 121 based on Foata normal form. 2/1543 useless extension candidates. Maximal degree in co-relation 10987. Up to 1117 conditions per place. [2024-06-14 11:21:01,360 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 208 selfloop transitions, 106 changer transitions 0/316 dead transitions. [2024-06-14 11:21:01,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 316 transitions, 4858 flow [2024-06-14 11:21:01,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:21:01,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:21:01,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-14 11:21:01,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-14 11:21:01,361 INFO L175 Difference]: Start difference. First operand has 345 places, 297 transitions, 3928 flow. Second operand 10 states and 113 transitions. [2024-06-14 11:21:01,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 316 transitions, 4858 flow [2024-06-14 11:21:01,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 316 transitions, 4690 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-14 11:21:01,801 INFO L231 Difference]: Finished difference. Result has 348 places, 299 transitions, 4049 flow [2024-06-14 11:21:01,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3762, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4049, PETRI_PLACES=348, PETRI_TRANSITIONS=299} [2024-06-14 11:21:01,802 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 317 predicate places. [2024-06-14 11:21:01,802 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 299 transitions, 4049 flow [2024-06-14 11:21:01,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:01,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:01,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:01,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-14 11:21:01,802 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:21:01,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:01,802 INFO L85 PathProgramCache]: Analyzing trace with hash -101991799, now seen corresponding path program 9 times [2024-06-14 11:21:01,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:01,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710362639] [2024-06-14 11:21:01,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:01,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:01,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:03,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:03,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:03,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710362639] [2024-06-14 11:21:03,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710362639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:03,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:03,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:21:03,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382088346] [2024-06-14 11:21:03,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:03,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:21:03,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:03,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:21:03,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:21:03,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:21:03,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 299 transitions, 4049 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:03,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:03,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:21:03,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:03,901 INFO L124 PetriNetUnfolderBase]: 840/1535 cut-off events. [2024-06-14 11:21:03,902 INFO L125 PetriNetUnfolderBase]: For 87943/87943 co-relation queries the response was YES. [2024-06-14 11:21:03,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11004 conditions, 1535 events. 840/1535 cut-off events. For 87943/87943 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 8723 event pairs, 125 based on Foata normal form. 2/1537 useless extension candidates. Maximal degree in co-relation 10839. Up to 1272 conditions per place. [2024-06-14 11:21:03,919 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 243 selfloop transitions, 70 changer transitions 0/315 dead transitions. [2024-06-14 11:21:03,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 315 transitions, 4751 flow [2024-06-14 11:21:03,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:21:03,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:21:03,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-14 11:21:03,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-14 11:21:03,920 INFO L175 Difference]: Start difference. First operand has 348 places, 299 transitions, 4049 flow. Second operand 10 states and 110 transitions. [2024-06-14 11:21:03,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 315 transitions, 4751 flow [2024-06-14 11:21:04,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 315 transitions, 4473 flow, removed 53 selfloop flow, removed 7 redundant places. [2024-06-14 11:21:04,342 INFO L231 Difference]: Finished difference. Result has 351 places, 299 transitions, 3919 flow [2024-06-14 11:21:04,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3771, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3919, PETRI_PLACES=351, PETRI_TRANSITIONS=299} [2024-06-14 11:21:04,342 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 320 predicate places. [2024-06-14 11:21:04,342 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 299 transitions, 3919 flow [2024-06-14 11:21:04,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:04,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:04,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:04,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-14 11:21:04,342 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:21:04,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:04,343 INFO L85 PathProgramCache]: Analyzing trace with hash 306562043, now seen corresponding path program 25 times [2024-06-14 11:21:04,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:04,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416220754] [2024-06-14 11:21:04,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:04,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:04,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:05,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:05,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:05,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416220754] [2024-06-14 11:21:05,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416220754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:05,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:05,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:21:05,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718351435] [2024-06-14 11:21:05,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:05,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:21:05,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:05,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:21:05,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:21:05,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:21:05,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 299 transitions, 3919 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:05,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:05,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:21:05,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:05,766 INFO L124 PetriNetUnfolderBase]: 844/1541 cut-off events. [2024-06-14 11:21:05,766 INFO L125 PetriNetUnfolderBase]: For 89504/89504 co-relation queries the response was YES. [2024-06-14 11:21:05,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10948 conditions, 1541 events. 844/1541 cut-off events. For 89504/89504 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 8767 event pairs, 147 based on Foata normal form. 2/1543 useless extension candidates. Maximal degree in co-relation 10782. Up to 1235 conditions per place. [2024-06-14 11:21:05,783 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 234 selfloop transitions, 76 changer transitions 0/312 dead transitions. [2024-06-14 11:21:05,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 312 transitions, 4631 flow [2024-06-14 11:21:05,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:21:05,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:21:05,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-14 11:21:05,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3472222222222222 [2024-06-14 11:21:05,784 INFO L175 Difference]: Start difference. First operand has 351 places, 299 transitions, 3919 flow. Second operand 9 states and 100 transitions. [2024-06-14 11:21:05,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 312 transitions, 4631 flow [2024-06-14 11:21:06,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 312 transitions, 4452 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-14 11:21:06,191 INFO L231 Difference]: Finished difference. Result has 351 places, 300 transitions, 3940 flow [2024-06-14 11:21:06,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3740, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3940, PETRI_PLACES=351, PETRI_TRANSITIONS=300} [2024-06-14 11:21:06,192 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 320 predicate places. [2024-06-14 11:21:06,192 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 300 transitions, 3940 flow [2024-06-14 11:21:06,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:06,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:06,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:06,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-14 11:21:06,193 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:21:06,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:06,193 INFO L85 PathProgramCache]: Analyzing trace with hash 306568987, now seen corresponding path program 10 times [2024-06-14 11:21:06,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:06,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368916914] [2024-06-14 11:21:06,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:06,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:06,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:07,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:07,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:07,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368916914] [2024-06-14 11:21:07,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368916914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:07,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:07,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:21:07,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402335068] [2024-06-14 11:21:07,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:07,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:21:07,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:07,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:21:07,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:21:07,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:21:07,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 300 transitions, 3940 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:07,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:07,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:21:07,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:08,212 INFO L124 PetriNetUnfolderBase]: 850/1551 cut-off events. [2024-06-14 11:21:08,212 INFO L125 PetriNetUnfolderBase]: For 89873/89873 co-relation queries the response was YES. [2024-06-14 11:21:08,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11001 conditions, 1551 events. 850/1551 cut-off events. For 89873/89873 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 8831 event pairs, 146 based on Foata normal form. 2/1553 useless extension candidates. Maximal degree in co-relation 10835. Up to 1339 conditions per place. [2024-06-14 11:21:08,229 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 257 selfloop transitions, 56 changer transitions 0/315 dead transitions. [2024-06-14 11:21:08,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 315 transitions, 4700 flow [2024-06-14 11:21:08,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:21:08,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:21:08,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-14 11:21:08,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-14 11:21:08,230 INFO L175 Difference]: Start difference. First operand has 351 places, 300 transitions, 3940 flow. Second operand 9 states and 99 transitions. [2024-06-14 11:21:08,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 315 transitions, 4700 flow [2024-06-14 11:21:08,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 315 transitions, 4510 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-14 11:21:08,669 INFO L231 Difference]: Finished difference. Result has 353 places, 302 transitions, 3945 flow [2024-06-14 11:21:08,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3750, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3945, PETRI_PLACES=353, PETRI_TRANSITIONS=302} [2024-06-14 11:21:08,669 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 322 predicate places. [2024-06-14 11:21:08,669 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 302 transitions, 3945 flow [2024-06-14 11:21:08,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:08,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:08,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:08,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-14 11:21:08,669 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:21:08,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:08,670 INFO L85 PathProgramCache]: Analyzing trace with hash 313064107, now seen corresponding path program 11 times [2024-06-14 11:21:08,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:08,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473546297] [2024-06-14 11:21:08,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:08,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:08,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:10,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:10,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:10,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473546297] [2024-06-14 11:21:10,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473546297] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:10,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:10,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:21:10,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957703965] [2024-06-14 11:21:10,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:10,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:21:10,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:10,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:21:10,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:21:10,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:21:10,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 302 transitions, 3945 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:10,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:10,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:21:10,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:10,759 INFO L124 PetriNetUnfolderBase]: 859/1566 cut-off events. [2024-06-14 11:21:10,759 INFO L125 PetriNetUnfolderBase]: For 95726/95726 co-relation queries the response was YES. [2024-06-14 11:21:10,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11137 conditions, 1566 events. 859/1566 cut-off events. For 95726/95726 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 8924 event pairs, 146 based on Foata normal form. 3/1569 useless extension candidates. Maximal degree in co-relation 10970. Up to 1301 conditions per place. [2024-06-14 11:21:10,777 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 245 selfloop transitions, 75 changer transitions 0/322 dead transitions. [2024-06-14 11:21:10,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 322 transitions, 4973 flow [2024-06-14 11:21:10,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:21:10,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:21:10,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-14 11:21:10,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-14 11:21:10,778 INFO L175 Difference]: Start difference. First operand has 353 places, 302 transitions, 3945 flow. Second operand 11 states and 123 transitions. [2024-06-14 11:21:10,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 322 transitions, 4973 flow [2024-06-14 11:21:11,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 322 transitions, 4768 flow, removed 49 selfloop flow, removed 7 redundant places. [2024-06-14 11:21:11,204 INFO L231 Difference]: Finished difference. Result has 358 places, 306 transitions, 4059 flow [2024-06-14 11:21:11,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3740, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4059, PETRI_PLACES=358, PETRI_TRANSITIONS=306} [2024-06-14 11:21:11,204 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 327 predicate places. [2024-06-14 11:21:11,204 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 306 transitions, 4059 flow [2024-06-14 11:21:11,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:11,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:11,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:11,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-14 11:21:11,204 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:21:11,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:11,205 INFO L85 PathProgramCache]: Analyzing trace with hash 313064417, now seen corresponding path program 3 times [2024-06-14 11:21:11,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:11,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71382312] [2024-06-14 11:21:11,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:11,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:11,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:12,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:12,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:12,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71382312] [2024-06-14 11:21:12,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71382312] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:12,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:12,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:21:12,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693900044] [2024-06-14 11:21:12,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:12,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:21:12,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:12,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:21:12,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:21:12,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:21:12,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 306 transitions, 4059 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:12,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:12,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:21:12,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:13,187 INFO L124 PetriNetUnfolderBase]: 863/1574 cut-off events. [2024-06-14 11:21:13,187 INFO L125 PetriNetUnfolderBase]: For 96480/96480 co-relation queries the response was YES. [2024-06-14 11:21:13,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11228 conditions, 1574 events. 863/1574 cut-off events. For 96480/96480 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 8980 event pairs, 170 based on Foata normal form. 2/1576 useless extension candidates. Maximal degree in co-relation 11059. Up to 1412 conditions per place. [2024-06-14 11:21:13,205 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 258 selfloop transitions, 58 changer transitions 0/318 dead transitions. [2024-06-14 11:21:13,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 318 transitions, 4761 flow [2024-06-14 11:21:13,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:21:13,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:21:13,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-14 11:21:13,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-14 11:21:13,205 INFO L175 Difference]: Start difference. First operand has 358 places, 306 transitions, 4059 flow. Second operand 10 states and 107 transitions. [2024-06-14 11:21:13,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 318 transitions, 4761 flow [2024-06-14 11:21:13,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 318 transitions, 4568 flow, removed 47 selfloop flow, removed 8 redundant places. [2024-06-14 11:21:13,610 INFO L231 Difference]: Finished difference. Result has 360 places, 307 transitions, 4026 flow [2024-06-14 11:21:13,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3866, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4026, PETRI_PLACES=360, PETRI_TRANSITIONS=307} [2024-06-14 11:21:13,611 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 329 predicate places. [2024-06-14 11:21:13,611 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 307 transitions, 4026 flow [2024-06-14 11:21:13,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:13,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:13,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:13,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-14 11:21:13,611 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:21:13,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:13,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1766757181, now seen corresponding path program 4 times [2024-06-14 11:21:13,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:13,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117991512] [2024-06-14 11:21:13,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:13,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:13,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:14,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:14,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:14,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117991512] [2024-06-14 11:21:14,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117991512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:14,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:14,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:21:14,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944434814] [2024-06-14 11:21:14,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:14,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:21:14,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:14,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:21:14,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:21:14,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:21:14,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 307 transitions, 4026 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:14,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:14,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:21:14,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:15,320 INFO L124 PetriNetUnfolderBase]: 874/1595 cut-off events. [2024-06-14 11:21:15,320 INFO L125 PetriNetUnfolderBase]: For 105825/105825 co-relation queries the response was YES. [2024-06-14 11:21:15,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11592 conditions, 1595 events. 874/1595 cut-off events. For 105825/105825 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 9151 event pairs, 320 based on Foata normal form. 2/1597 useless extension candidates. Maximal degree in co-relation 11422. Up to 1532 conditions per place. [2024-06-14 11:21:15,338 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 300 selfloop transitions, 19 changer transitions 0/321 dead transitions. [2024-06-14 11:21:15,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 321 transitions, 4938 flow [2024-06-14 11:21:15,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:21:15,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:21:15,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 99 transitions. [2024-06-14 11:21:15,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.309375 [2024-06-14 11:21:15,339 INFO L175 Difference]: Start difference. First operand has 360 places, 307 transitions, 4026 flow. Second operand 10 states and 99 transitions. [2024-06-14 11:21:15,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 321 transitions, 4938 flow [2024-06-14 11:21:15,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 321 transitions, 4788 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-14 11:21:15,783 INFO L231 Difference]: Finished difference. Result has 362 places, 309 transitions, 4000 flow [2024-06-14 11:21:15,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3876, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4000, PETRI_PLACES=362, PETRI_TRANSITIONS=309} [2024-06-14 11:21:15,784 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 331 predicate places. [2024-06-14 11:21:15,784 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 309 transitions, 4000 flow [2024-06-14 11:21:15,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:15,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:15,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:15,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-14 11:21:15,784 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:21:15,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:15,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1767113371, now seen corresponding path program 5 times [2024-06-14 11:21:15,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:15,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066601895] [2024-06-14 11:21:15,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:15,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:15,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:16,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:16,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:16,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066601895] [2024-06-14 11:21:16,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066601895] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:16,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:16,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:21:16,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651243004] [2024-06-14 11:21:16,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:16,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:21:16,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:16,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:21:16,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:21:17,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:21:17,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 309 transitions, 4000 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:17,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:17,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:21:17,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:17,486 INFO L124 PetriNetUnfolderBase]: 878/1603 cut-off events. [2024-06-14 11:21:17,486 INFO L125 PetriNetUnfolderBase]: For 108142/108142 co-relation queries the response was YES. [2024-06-14 11:21:17,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11565 conditions, 1603 events. 878/1603 cut-off events. For 108142/108142 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 9248 event pairs, 322 based on Foata normal form. 2/1605 useless extension candidates. Maximal degree in co-relation 11394. Up to 1559 conditions per place. [2024-06-14 11:21:17,504 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 298 selfloop transitions, 20 changer transitions 0/320 dead transitions. [2024-06-14 11:21:17,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 320 transitions, 4700 flow [2024-06-14 11:21:17,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:21:17,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:21:17,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 99 transitions. [2024-06-14 11:21:17,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.309375 [2024-06-14 11:21:17,505 INFO L175 Difference]: Start difference. First operand has 362 places, 309 transitions, 4000 flow. Second operand 10 states and 99 transitions. [2024-06-14 11:21:17,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 320 transitions, 4700 flow [2024-06-14 11:21:17,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 320 transitions, 4633 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-14 11:21:17,977 INFO L231 Difference]: Finished difference. Result has 366 places, 310 transitions, 4021 flow [2024-06-14 11:21:17,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3937, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4021, PETRI_PLACES=366, PETRI_TRANSITIONS=310} [2024-06-14 11:21:17,978 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 335 predicate places. [2024-06-14 11:21:17,978 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 310 transitions, 4021 flow [2024-06-14 11:21:17,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:17,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:17,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:17,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-14 11:21:17,978 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:21:17,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:17,978 INFO L85 PathProgramCache]: Analyzing trace with hash 875995389, now seen corresponding path program 6 times [2024-06-14 11:21:17,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:17,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570615928] [2024-06-14 11:21:17,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:17,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:17,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:19,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:19,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:19,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570615928] [2024-06-14 11:21:19,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570615928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:19,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:19,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:21:19,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471452391] [2024-06-14 11:21:19,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:19,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:21:19,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:19,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:21:19,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:21:19,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:21:19,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 310 transitions, 4021 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:19,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:19,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:21:19,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:20,136 INFO L124 PetriNetUnfolderBase]: 882/1611 cut-off events. [2024-06-14 11:21:20,137 INFO L125 PetriNetUnfolderBase]: For 110344/110344 co-relation queries the response was YES. [2024-06-14 11:21:20,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11635 conditions, 1611 events. 882/1611 cut-off events. For 110344/110344 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 9273 event pairs, 189 based on Foata normal form. 2/1613 useless extension candidates. Maximal degree in co-relation 11462. Up to 1482 conditions per place. [2024-06-14 11:21:20,155 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 276 selfloop transitions, 44 changer transitions 0/322 dead transitions. [2024-06-14 11:21:20,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 322 transitions, 4727 flow [2024-06-14 11:21:20,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:21:20,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:21:20,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-14 11:21:20,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3153409090909091 [2024-06-14 11:21:20,156 INFO L175 Difference]: Start difference. First operand has 366 places, 310 transitions, 4021 flow. Second operand 11 states and 111 transitions. [2024-06-14 11:21:20,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 322 transitions, 4727 flow [2024-06-14 11:21:20,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 322 transitions, 4655 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-14 11:21:20,597 INFO L231 Difference]: Finished difference. Result has 369 places, 311 transitions, 4085 flow [2024-06-14 11:21:20,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3949, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4085, PETRI_PLACES=369, PETRI_TRANSITIONS=311} [2024-06-14 11:21:20,597 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 338 predicate places. [2024-06-14 11:21:20,597 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 311 transitions, 4085 flow [2024-06-14 11:21:20,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:20,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:20,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:20,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-14 11:21:20,598 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:21:20,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:20,598 INFO L85 PathProgramCache]: Analyzing trace with hash -2062578835, now seen corresponding path program 26 times [2024-06-14 11:21:20,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:20,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885488116] [2024-06-14 11:21:20,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:20,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:20,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:21,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:21,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:21,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885488116] [2024-06-14 11:21:21,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885488116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:21,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:21,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:21:21,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650501619] [2024-06-14 11:21:21,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:21,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:21:21,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:21,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:21:21,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:21:21,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:21:21,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 311 transitions, 4085 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:21,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:21,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:21:21,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:21,898 INFO L124 PetriNetUnfolderBase]: 886/1619 cut-off events. [2024-06-14 11:21:21,898 INFO L125 PetriNetUnfolderBase]: For 113132/113132 co-relation queries the response was YES. [2024-06-14 11:21:21,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11762 conditions, 1619 events. 886/1619 cut-off events. For 113132/113132 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 9366 event pairs, 323 based on Foata normal form. 2/1621 useless extension candidates. Maximal degree in co-relation 11588. Up to 1581 conditions per place. [2024-06-14 11:21:21,918 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 305 selfloop transitions, 15 changer transitions 0/322 dead transitions. [2024-06-14 11:21:21,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 322 transitions, 4799 flow [2024-06-14 11:21:21,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:21:21,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:21:21,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2024-06-14 11:21:21,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-14 11:21:21,919 INFO L175 Difference]: Start difference. First operand has 369 places, 311 transitions, 4085 flow. Second operand 9 states and 90 transitions. [2024-06-14 11:21:21,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 322 transitions, 4799 flow [2024-06-14 11:21:22,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 322 transitions, 4672 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-14 11:21:22,311 INFO L231 Difference]: Finished difference. Result has 369 places, 312 transitions, 4038 flow [2024-06-14 11:21:22,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3958, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4038, PETRI_PLACES=369, PETRI_TRANSITIONS=312} [2024-06-14 11:21:22,311 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 338 predicate places. [2024-06-14 11:21:22,311 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 312 transitions, 4038 flow [2024-06-14 11:21:22,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:22,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:22,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:22,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-14 11:21:22,312 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:21:22,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:22,312 INFO L85 PathProgramCache]: Analyzing trace with hash 306384413, now seen corresponding path program 27 times [2024-06-14 11:21:22,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:22,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976875971] [2024-06-14 11:21:22,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:22,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:22,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:23,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:23,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:23,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976875971] [2024-06-14 11:21:23,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976875971] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:23,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:23,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:21:23,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827906974] [2024-06-14 11:21:23,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:23,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:21:23,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:23,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:21:23,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:21:23,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:21:23,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 312 transitions, 4038 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:23,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:23,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:21:23,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:23,689 INFO L124 PetriNetUnfolderBase]: 890/1627 cut-off events. [2024-06-14 11:21:23,689 INFO L125 PetriNetUnfolderBase]: For 115193/115193 co-relation queries the response was YES. [2024-06-14 11:21:23,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11757 conditions, 1627 events. 890/1627 cut-off events. For 115193/115193 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 9413 event pairs, 152 based on Foata normal form. 2/1629 useless extension candidates. Maximal degree in co-relation 11582. Up to 1428 conditions per place. [2024-06-14 11:21:23,708 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 271 selfloop transitions, 52 changer transitions 0/325 dead transitions. [2024-06-14 11:21:23,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 325 transitions, 4772 flow [2024-06-14 11:21:23,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:21:23,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:21:23,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-14 11:21:23,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 11:21:23,709 INFO L175 Difference]: Start difference. First operand has 369 places, 312 transitions, 4038 flow. Second operand 9 states and 96 transitions. [2024-06-14 11:21:23,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 325 transitions, 4772 flow [2024-06-14 11:21:24,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 325 transitions, 4702 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-14 11:21:24,215 INFO L231 Difference]: Finished difference. Result has 371 places, 313 transitions, 4124 flow [2024-06-14 11:21:24,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3968, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4124, PETRI_PLACES=371, PETRI_TRANSITIONS=313} [2024-06-14 11:21:24,216 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 340 predicate places. [2024-06-14 11:21:24,216 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 313 transitions, 4124 flow [2024-06-14 11:21:24,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:24,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:24,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:24,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-14 11:21:24,216 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:21:24,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:24,216 INFO L85 PathProgramCache]: Analyzing trace with hash -40263175, now seen corresponding path program 12 times [2024-06-14 11:21:24,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:24,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036889882] [2024-06-14 11:21:24,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:24,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:24,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:25,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:25,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:25,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036889882] [2024-06-14 11:21:25,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036889882] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:25,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:25,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:21:25,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317240664] [2024-06-14 11:21:25,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:25,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:21:25,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:25,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:21:25,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:21:25,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:21:25,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 313 transitions, 4124 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:25,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:25,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:21:25,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:26,030 INFO L124 PetriNetUnfolderBase]: 896/1637 cut-off events. [2024-06-14 11:21:26,031 INFO L125 PetriNetUnfolderBase]: For 117689/117689 co-relation queries the response was YES. [2024-06-14 11:21:26,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11910 conditions, 1637 events. 896/1637 cut-off events. For 117689/117689 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 9492 event pairs, 323 based on Foata normal form. 2/1639 useless extension candidates. Maximal degree in co-relation 11734. Up to 1570 conditions per place. [2024-06-14 11:21:26,050 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 303 selfloop transitions, 24 changer transitions 0/329 dead transitions. [2024-06-14 11:21:26,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 329 transitions, 5062 flow [2024-06-14 11:21:26,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:21:26,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:21:26,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-14 11:21:26,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3210227272727273 [2024-06-14 11:21:26,051 INFO L175 Difference]: Start difference. First operand has 371 places, 313 transitions, 4124 flow. Second operand 11 states and 113 transitions. [2024-06-14 11:21:26,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 329 transitions, 5062 flow [2024-06-14 11:21:26,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 329 transitions, 4916 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-14 11:21:26,493 INFO L231 Difference]: Finished difference. Result has 375 places, 315 transitions, 4083 flow [2024-06-14 11:21:26,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3978, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4083, PETRI_PLACES=375, PETRI_TRANSITIONS=315} [2024-06-14 11:21:26,494 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 344 predicate places. [2024-06-14 11:21:26,494 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 315 transitions, 4083 flow [2024-06-14 11:21:26,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:26,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:26,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:26,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-14 11:21:26,494 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:21:26,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:26,494 INFO L85 PathProgramCache]: Analyzing trace with hash -40254805, now seen corresponding path program 13 times [2024-06-14 11:21:26,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:26,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648893561] [2024-06-14 11:21:26,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:26,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:26,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:27,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:27,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:27,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648893561] [2024-06-14 11:21:27,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648893561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:27,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:27,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:21:27,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99452041] [2024-06-14 11:21:27,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:27,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:21:27,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:27,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:21:27,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:21:27,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:21:27,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 315 transitions, 4083 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:27,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:27,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:21:27,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:28,224 INFO L124 PetriNetUnfolderBase]: 892/1631 cut-off events. [2024-06-14 11:21:28,225 INFO L125 PetriNetUnfolderBase]: For 110838/110838 co-relation queries the response was YES. [2024-06-14 11:21:28,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11551 conditions, 1631 events. 892/1631 cut-off events. For 110838/110838 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 9455 event pairs, 322 based on Foata normal form. 2/1633 useless extension candidates. Maximal degree in co-relation 11374. Up to 1567 conditions per place. [2024-06-14 11:21:28,245 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 299 selfloop transitions, 25 changer transitions 0/326 dead transitions. [2024-06-14 11:21:28,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 326 transitions, 4771 flow [2024-06-14 11:21:28,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:21:28,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:21:28,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-14 11:21:28,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.321875 [2024-06-14 11:21:28,246 INFO L175 Difference]: Start difference. First operand has 375 places, 315 transitions, 4083 flow. Second operand 10 states and 103 transitions. [2024-06-14 11:21:28,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 326 transitions, 4771 flow [2024-06-14 11:21:28,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 326 transitions, 4645 flow, removed 34 selfloop flow, removed 10 redundant places. [2024-06-14 11:21:28,741 INFO L231 Difference]: Finished difference. Result has 375 places, 315 transitions, 4015 flow [2024-06-14 11:21:28,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3957, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4015, PETRI_PLACES=375, PETRI_TRANSITIONS=315} [2024-06-14 11:21:28,741 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 344 predicate places. [2024-06-14 11:21:28,741 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 315 transitions, 4015 flow [2024-06-14 11:21:28,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:28,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:28,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:28,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-14 11:21:28,741 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:21:28,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:28,742 INFO L85 PathProgramCache]: Analyzing trace with hash 828226391, now seen corresponding path program 28 times [2024-06-14 11:21:28,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:28,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297780895] [2024-06-14 11:21:28,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:28,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:28,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:29,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:29,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:29,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297780895] [2024-06-14 11:21:29,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297780895] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:29,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:29,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:21:29,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502856537] [2024-06-14 11:21:29,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:29,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:21:29,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:29,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:21:29,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:21:29,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:21:29,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 315 transitions, 4015 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:29,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:29,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:21:29,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:30,064 INFO L124 PetriNetUnfolderBase]: 889/1626 cut-off events. [2024-06-14 11:21:30,064 INFO L125 PetriNetUnfolderBase]: For 104114/104114 co-relation queries the response was YES. [2024-06-14 11:21:30,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11254 conditions, 1626 events. 889/1626 cut-off events. For 104114/104114 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 9448 event pairs, 150 based on Foata normal form. 2/1628 useless extension candidates. Maximal degree in co-relation 11077. Up to 1418 conditions per place. [2024-06-14 11:21:30,084 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 270 selfloop transitions, 56 changer transitions 0/328 dead transitions. [2024-06-14 11:21:30,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 328 transitions, 4727 flow [2024-06-14 11:21:30,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:21:30,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:21:30,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-14 11:21:30,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3472222222222222 [2024-06-14 11:21:30,085 INFO L175 Difference]: Start difference. First operand has 375 places, 315 transitions, 4015 flow. Second operand 9 states and 100 transitions. [2024-06-14 11:21:30,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 328 transitions, 4727 flow [2024-06-14 11:21:30,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 328 transitions, 4676 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-14 11:21:30,579 INFO L231 Difference]: Finished difference. Result has 375 places, 315 transitions, 4080 flow [2024-06-14 11:21:30,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3964, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4080, PETRI_PLACES=375, PETRI_TRANSITIONS=315} [2024-06-14 11:21:30,579 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 344 predicate places. [2024-06-14 11:21:30,579 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 315 transitions, 4080 flow [2024-06-14 11:21:30,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:30,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:30,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:30,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-14 11:21:30,579 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:21:30,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:30,580 INFO L85 PathProgramCache]: Analyzing trace with hash -2004732909, now seen corresponding path program 7 times [2024-06-14 11:21:30,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:30,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902274682] [2024-06-14 11:21:30,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:30,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:30,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:31,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:31,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:31,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902274682] [2024-06-14 11:21:31,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902274682] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:31,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:31,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:21:31,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375504667] [2024-06-14 11:21:31,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:31,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:21:31,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:31,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:21:31,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:21:31,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:21:31,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 315 transitions, 4080 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:31,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:31,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:21:31,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:32,256 INFO L124 PetriNetUnfolderBase]: 886/1621 cut-off events. [2024-06-14 11:21:32,256 INFO L125 PetriNetUnfolderBase]: For 96412/96412 co-relation queries the response was YES. [2024-06-14 11:21:32,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11109 conditions, 1621 events. 886/1621 cut-off events. For 96412/96412 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 9405 event pairs, 321 based on Foata normal form. 2/1623 useless extension candidates. Maximal degree in co-relation 10932. Up to 1557 conditions per place. [2024-06-14 11:21:32,275 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 301 selfloop transitions, 22 changer transitions 0/325 dead transitions. [2024-06-14 11:21:32,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 325 transitions, 4748 flow [2024-06-14 11:21:32,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:21:32,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:21:32,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 99 transitions. [2024-06-14 11:21:32,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.309375 [2024-06-14 11:21:32,276 INFO L175 Difference]: Start difference. First operand has 375 places, 315 transitions, 4080 flow. Second operand 10 states and 99 transitions. [2024-06-14 11:21:32,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 325 transitions, 4748 flow [2024-06-14 11:21:32,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 325 transitions, 4478 flow, removed 40 selfloop flow, removed 8 redundant places. [2024-06-14 11:21:32,736 INFO L231 Difference]: Finished difference. Result has 377 places, 315 transitions, 3862 flow [2024-06-14 11:21:32,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3810, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3862, PETRI_PLACES=377, PETRI_TRANSITIONS=315} [2024-06-14 11:21:32,737 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 346 predicate places. [2024-06-14 11:21:32,737 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 315 transitions, 3862 flow [2024-06-14 11:21:32,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:32,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:32,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:32,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-14 11:21:32,737 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:21:32,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:32,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1670333095, now seen corresponding path program 14 times [2024-06-14 11:21:32,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:32,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590305417] [2024-06-14 11:21:32,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:32,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:32,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:33,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:33,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:33,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590305417] [2024-06-14 11:21:33,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590305417] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:33,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:33,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:21:33,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974109236] [2024-06-14 11:21:33,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:33,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:21:33,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:33,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:21:33,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:21:33,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:21:33,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 315 transitions, 3862 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:33,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:33,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:21:33,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:34,424 INFO L124 PetriNetUnfolderBase]: 882/1615 cut-off events. [2024-06-14 11:21:34,424 INFO L125 PetriNetUnfolderBase]: For 87318/87318 co-relation queries the response was YES. [2024-06-14 11:21:34,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10535 conditions, 1615 events. 882/1615 cut-off events. For 87318/87318 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 9386 event pairs, 148 based on Foata normal form. 2/1617 useless extension candidates. Maximal degree in co-relation 10357. Up to 1394 conditions per place. [2024-06-14 11:21:34,443 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 267 selfloop transitions, 61 changer transitions 0/330 dead transitions. [2024-06-14 11:21:34,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 330 transitions, 4592 flow [2024-06-14 11:21:34,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:21:34,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:21:34,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-14 11:21:34,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-14 11:21:34,444 INFO L175 Difference]: Start difference. First operand has 377 places, 315 transitions, 3862 flow. Second operand 10 states and 110 transitions. [2024-06-14 11:21:34,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 330 transitions, 4592 flow [2024-06-14 11:21:34,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 330 transitions, 4494 flow, removed 25 selfloop flow, removed 11 redundant places. [2024-06-14 11:21:34,881 INFO L231 Difference]: Finished difference. Result has 376 places, 315 transitions, 3892 flow [2024-06-14 11:21:34,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3764, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3892, PETRI_PLACES=376, PETRI_TRANSITIONS=315} [2024-06-14 11:21:34,881 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 345 predicate places. [2024-06-14 11:21:34,881 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 315 transitions, 3892 flow [2024-06-14 11:21:34,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:34,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:34,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:34,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-14 11:21:34,881 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:21:34,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:34,882 INFO L85 PathProgramCache]: Analyzing trace with hash -325363045, now seen corresponding path program 15 times [2024-06-14 11:21:34,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:34,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344698888] [2024-06-14 11:21:34,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:34,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:34,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:36,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:36,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:36,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344698888] [2024-06-14 11:21:36,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344698888] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:36,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:36,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:21:36,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075822154] [2024-06-14 11:21:36,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:36,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:21:36,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:36,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:21:36,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:21:36,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:21:36,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 315 transitions, 3892 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:36,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:36,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:21:36,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:36,976 INFO L124 PetriNetUnfolderBase]: 888/1625 cut-off events. [2024-06-14 11:21:36,976 INFO L125 PetriNetUnfolderBase]: For 84261/84261 co-relation queries the response was YES. [2024-06-14 11:21:36,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10637 conditions, 1625 events. 888/1625 cut-off events. For 84261/84261 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 9446 event pairs, 317 based on Foata normal form. 2/1627 useless extension candidates. Maximal degree in co-relation 10460. Up to 1568 conditions per place. [2024-06-14 11:21:36,996 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 307 selfloop transitions, 21 changer transitions 0/330 dead transitions. [2024-06-14 11:21:36,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 330 transitions, 4662 flow [2024-06-14 11:21:36,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:21:36,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:21:36,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-14 11:21:36,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.321875 [2024-06-14 11:21:36,997 INFO L175 Difference]: Start difference. First operand has 376 places, 315 transitions, 3892 flow. Second operand 10 states and 103 transitions. [2024-06-14 11:21:36,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 330 transitions, 4662 flow [2024-06-14 11:21:37,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 330 transitions, 4538 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-14 11:21:37,426 INFO L231 Difference]: Finished difference. Result has 378 places, 317 transitions, 3873 flow [2024-06-14 11:21:37,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3768, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3873, PETRI_PLACES=378, PETRI_TRANSITIONS=317} [2024-06-14 11:21:37,426 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 347 predicate places. [2024-06-14 11:21:37,426 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 317 transitions, 3873 flow [2024-06-14 11:21:37,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:37,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:37,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:37,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-14 11:21:37,427 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:21:37,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:37,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1050117385, now seen corresponding path program 16 times [2024-06-14 11:21:37,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:37,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491006696] [2024-06-14 11:21:37,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:37,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:37,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:38,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:38,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:38,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491006696] [2024-06-14 11:21:38,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491006696] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:38,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:38,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:21:38,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960159460] [2024-06-14 11:21:38,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:38,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:21:38,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:38,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:21:38,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:21:38,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:21:38,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 317 transitions, 3873 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:38,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:38,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:21:38,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:39,171 INFO L124 PetriNetUnfolderBase]: 894/1635 cut-off events. [2024-06-14 11:21:39,171 INFO L125 PetriNetUnfolderBase]: For 86039/86039 co-relation queries the response was YES. [2024-06-14 11:21:39,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10661 conditions, 1635 events. 894/1635 cut-off events. For 86039/86039 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 9523 event pairs, 314 based on Foata normal form. 2/1637 useless extension candidates. Maximal degree in co-relation 10483. Up to 1517 conditions per place. [2024-06-14 11:21:39,189 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 295 selfloop transitions, 39 changer transitions 0/336 dead transitions. [2024-06-14 11:21:39,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 336 transitions, 4865 flow [2024-06-14 11:21:39,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:21:39,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:21:39,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-14 11:21:39,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-14 11:21:39,190 INFO L175 Difference]: Start difference. First operand has 378 places, 317 transitions, 3873 flow. Second operand 11 states and 121 transitions. [2024-06-14 11:21:39,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 336 transitions, 4865 flow [2024-06-14 11:21:39,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 336 transitions, 4786 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-14 11:21:39,647 INFO L231 Difference]: Finished difference. Result has 381 places, 319 transitions, 3938 flow [2024-06-14 11:21:39,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3794, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3938, PETRI_PLACES=381, PETRI_TRANSITIONS=319} [2024-06-14 11:21:39,648 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 350 predicate places. [2024-06-14 11:21:39,648 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 319 transitions, 3938 flow [2024-06-14 11:21:39,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:39,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:39,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:39,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-14 11:21:39,648 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:21:39,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:39,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1050117695, now seen corresponding path program 8 times [2024-06-14 11:21:39,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:39,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908879417] [2024-06-14 11:21:39,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:39,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:39,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:40,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:40,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:40,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908879417] [2024-06-14 11:21:40,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908879417] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:40,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:40,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:21:40,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550948456] [2024-06-14 11:21:40,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:40,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:21:40,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:40,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:21:40,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:21:40,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:21:40,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 319 transitions, 3938 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:40,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:40,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:21:40,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:41,590 INFO L124 PetriNetUnfolderBase]: 896/1638 cut-off events. [2024-06-14 11:21:41,591 INFO L125 PetriNetUnfolderBase]: For 83835/83835 co-relation queries the response was YES. [2024-06-14 11:21:41,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10682 conditions, 1638 events. 896/1638 cut-off events. For 83835/83835 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 9520 event pairs, 169 based on Foata normal form. 2/1640 useless extension candidates. Maximal degree in co-relation 10503. Up to 1348 conditions per place. [2024-06-14 11:21:41,611 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 238 selfloop transitions, 95 changer transitions 0/335 dead transitions. [2024-06-14 11:21:41,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 335 transitions, 4914 flow [2024-06-14 11:21:41,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:21:41,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:21:41,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-14 11:21:41,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-14 11:21:41,612 INFO L175 Difference]: Start difference. First operand has 381 places, 319 transitions, 3938 flow. Second operand 11 states and 122 transitions. [2024-06-14 11:21:41,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 335 transitions, 4914 flow [2024-06-14 11:21:42,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 335 transitions, 4770 flow, removed 25 selfloop flow, removed 10 redundant places. [2024-06-14 11:21:42,085 INFO L231 Difference]: Finished difference. Result has 383 places, 321 transitions, 4115 flow [2024-06-14 11:21:42,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3794, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4115, PETRI_PLACES=383, PETRI_TRANSITIONS=321} [2024-06-14 11:21:42,085 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 352 predicate places. [2024-06-14 11:21:42,086 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 321 transitions, 4115 flow [2024-06-14 11:21:42,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:42,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:42,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:42,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-14 11:21:42,086 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:21:42,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:42,086 INFO L85 PathProgramCache]: Analyzing trace with hash -2062571891, now seen corresponding path program 17 times [2024-06-14 11:21:42,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:42,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830804871] [2024-06-14 11:21:42,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:42,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:42,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:43,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:43,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:43,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830804871] [2024-06-14 11:21:43,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830804871] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:43,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:43,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:21:43,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337510603] [2024-06-14 11:21:43,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:43,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:21:43,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:43,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:21:43,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:21:43,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:21:43,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 321 transitions, 4115 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:43,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:43,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:21:43,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:43,709 INFO L124 PetriNetUnfolderBase]: 892/1632 cut-off events. [2024-06-14 11:21:43,709 INFO L125 PetriNetUnfolderBase]: For 77039/77039 co-relation queries the response was YES. [2024-06-14 11:21:43,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10585 conditions, 1632 events. 892/1632 cut-off events. For 77039/77039 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 9508 event pairs, 316 based on Foata normal form. 2/1634 useless extension candidates. Maximal degree in co-relation 10405. Up to 1517 conditions per place. [2024-06-14 11:21:43,730 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 294 selfloop transitions, 36 changer transitions 0/332 dead transitions. [2024-06-14 11:21:43,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 332 transitions, 4823 flow [2024-06-14 11:21:43,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:21:43,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:21:43,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-14 11:21:43,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3506944444444444 [2024-06-14 11:21:43,731 INFO L175 Difference]: Start difference. First operand has 383 places, 321 transitions, 4115 flow. Second operand 9 states and 101 transitions. [2024-06-14 11:21:43,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 332 transitions, 4823 flow [2024-06-14 11:21:44,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 332 transitions, 4561 flow, removed 39 selfloop flow, removed 10 redundant places. [2024-06-14 11:21:44,149 INFO L231 Difference]: Finished difference. Result has 382 places, 321 transitions, 3931 flow [2024-06-14 11:21:44,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3853, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3931, PETRI_PLACES=382, PETRI_TRANSITIONS=321} [2024-06-14 11:21:44,150 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 351 predicate places. [2024-06-14 11:21:44,150 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 321 transitions, 3931 flow [2024-06-14 11:21:44,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:44,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:44,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:44,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-14 11:21:44,150 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:21:44,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:44,151 INFO L85 PathProgramCache]: Analyzing trace with hash -234057009, now seen corresponding path program 1 times [2024-06-14 11:21:44,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:44,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269700749] [2024-06-14 11:21:44,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:44,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:44,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:45,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:45,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:45,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269700749] [2024-06-14 11:21:45,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269700749] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:45,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:45,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:21:45,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075028851] [2024-06-14 11:21:45,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:45,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:21:45,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:45,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:21:45,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:21:45,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:21:45,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 321 transitions, 3931 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:45,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:45,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:21:45,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:45,864 INFO L124 PetriNetUnfolderBase]: 896/1640 cut-off events. [2024-06-14 11:21:45,864 INFO L125 PetriNetUnfolderBase]: For 77314/77314 co-relation queries the response was YES. [2024-06-14 11:21:45,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10370 conditions, 1640 events. 896/1640 cut-off events. For 77314/77314 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 9559 event pairs, 178 based on Foata normal form. 2/1642 useless extension candidates. Maximal degree in co-relation 10191. Up to 1461 conditions per place. [2024-06-14 11:21:45,880 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 304 selfloop transitions, 35 changer transitions 0/341 dead transitions. [2024-06-14 11:21:45,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 341 transitions, 4681 flow [2024-06-14 11:21:45,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:21:45,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:21:45,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-14 11:21:45,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33238636363636365 [2024-06-14 11:21:45,881 INFO L175 Difference]: Start difference. First operand has 382 places, 321 transitions, 3931 flow. Second operand 11 states and 117 transitions. [2024-06-14 11:21:45,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 341 transitions, 4681 flow [2024-06-14 11:21:46,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 341 transitions, 4602 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-14 11:21:46,369 INFO L231 Difference]: Finished difference. Result has 385 places, 322 transitions, 3954 flow [2024-06-14 11:21:46,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3852, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3954, PETRI_PLACES=385, PETRI_TRANSITIONS=322} [2024-06-14 11:21:46,370 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 354 predicate places. [2024-06-14 11:21:46,370 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 322 transitions, 3954 flow [2024-06-14 11:21:46,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:46,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:46,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:46,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-14 11:21:46,370 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:21:46,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:46,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1184575547, now seen corresponding path program 2 times [2024-06-14 11:21:46,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:46,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210515266] [2024-06-14 11:21:46,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:46,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:46,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:47,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:47,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:47,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210515266] [2024-06-14 11:21:47,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210515266] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:47,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:47,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:21:47,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52137735] [2024-06-14 11:21:47,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:47,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:21:47,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:47,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:21:47,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:21:47,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:21:47,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 322 transitions, 3954 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:47,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:47,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:21:47,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:48,168 INFO L124 PetriNetUnfolderBase]: 915/1681 cut-off events. [2024-06-14 11:21:48,168 INFO L125 PetriNetUnfolderBase]: For 100107/100107 co-relation queries the response was YES. [2024-06-14 11:21:48,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11087 conditions, 1681 events. 915/1681 cut-off events. For 100107/100107 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 9853 event pairs, 169 based on Foata normal form. 2/1683 useless extension candidates. Maximal degree in co-relation 10908. Up to 1413 conditions per place. [2024-06-14 11:21:48,188 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 303 selfloop transitions, 40 changer transitions 0/345 dead transitions. [2024-06-14 11:21:48,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 345 transitions, 4916 flow [2024-06-14 11:21:48,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:21:48,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:21:48,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-14 11:21:48,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-14 11:21:48,189 INFO L175 Difference]: Start difference. First operand has 385 places, 322 transitions, 3954 flow. Second operand 11 states and 120 transitions. [2024-06-14 11:21:48,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 345 transitions, 4916 flow [2024-06-14 11:21:48,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 345 transitions, 4824 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-14 11:21:48,688 INFO L231 Difference]: Finished difference. Result has 387 places, 323 transitions, 3978 flow [2024-06-14 11:21:48,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3862, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3978, PETRI_PLACES=387, PETRI_TRANSITIONS=323} [2024-06-14 11:21:48,688 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 356 predicate places. [2024-06-14 11:21:48,689 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 323 transitions, 3978 flow [2024-06-14 11:21:48,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:48,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:48,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:48,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-14 11:21:48,689 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:21:48,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:48,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1570528011, now seen corresponding path program 3 times [2024-06-14 11:21:48,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:48,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120193576] [2024-06-14 11:21:48,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:48,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:48,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:50,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:50,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:50,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120193576] [2024-06-14 11:21:50,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120193576] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:50,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:50,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:21:50,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657885793] [2024-06-14 11:21:50,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:50,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:21:50,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:50,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:21:50,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:21:50,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:21:50,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 323 transitions, 3978 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:50,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:50,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:21:50,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:50,921 INFO L124 PetriNetUnfolderBase]: 919/1689 cut-off events. [2024-06-14 11:21:50,921 INFO L125 PetriNetUnfolderBase]: For 104117/104117 co-relation queries the response was YES. [2024-06-14 11:21:50,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11166 conditions, 1689 events. 919/1689 cut-off events. For 104117/104117 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 9890 event pairs, 180 based on Foata normal form. 2/1691 useless extension candidates. Maximal degree in co-relation 10986. Up to 1528 conditions per place. [2024-06-14 11:21:50,938 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 290 selfloop transitions, 49 changer transitions 0/341 dead transitions. [2024-06-14 11:21:50,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 341 transitions, 4742 flow [2024-06-14 11:21:50,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:21:50,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:21:50,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-14 11:21:50,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-14 11:21:50,939 INFO L175 Difference]: Start difference. First operand has 387 places, 323 transitions, 3978 flow. Second operand 11 states and 121 transitions. [2024-06-14 11:21:50,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 341 transitions, 4742 flow [2024-06-14 11:21:51,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 341 transitions, 4636 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-14 11:21:51,455 INFO L231 Difference]: Finished difference. Result has 389 places, 324 transitions, 4006 flow [2024-06-14 11:21:51,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3874, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4006, PETRI_PLACES=389, PETRI_TRANSITIONS=324} [2024-06-14 11:21:51,456 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 358 predicate places. [2024-06-14 11:21:51,456 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 324 transitions, 4006 flow [2024-06-14 11:21:51,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:51,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:51,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:51,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-14 11:21:51,456 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:21:51,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:51,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1570533808, now seen corresponding path program 1 times [2024-06-14 11:21:51,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:51,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233087767] [2024-06-14 11:21:51,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:51,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:51,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:52,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:52,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:52,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233087767] [2024-06-14 11:21:52,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233087767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:52,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:52,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:21:52,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120537122] [2024-06-14 11:21:52,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:52,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:21:52,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:52,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:21:52,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:21:52,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:21:52,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 324 transitions, 4006 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:52,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:52,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:21:52,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:53,369 INFO L124 PetriNetUnfolderBase]: 907/1661 cut-off events. [2024-06-14 11:21:53,369 INFO L125 PetriNetUnfolderBase]: For 74963/74963 co-relation queries the response was YES. [2024-06-14 11:21:53,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10559 conditions, 1661 events. 907/1661 cut-off events. For 74963/74963 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 9716 event pairs, 170 based on Foata normal form. 1/1662 useless extension candidates. Maximal degree in co-relation 10378. Up to 1485 conditions per place. [2024-06-14 11:21:53,389 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 282 selfloop transitions, 58 changer transitions 1/343 dead transitions. [2024-06-14 11:21:53,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 343 transitions, 4844 flow [2024-06-14 11:21:53,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:21:53,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:21:53,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-14 11:21:53,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-14 11:21:53,390 INFO L175 Difference]: Start difference. First operand has 389 places, 324 transitions, 4006 flow. Second operand 11 states and 125 transitions. [2024-06-14 11:21:53,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 343 transitions, 4844 flow [2024-06-14 11:21:53,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 343 transitions, 4722 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-14 11:21:53,861 INFO L231 Difference]: Finished difference. Result has 391 places, 326 transitions, 4097 flow [2024-06-14 11:21:53,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3884, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4097, PETRI_PLACES=391, PETRI_TRANSITIONS=326} [2024-06-14 11:21:53,861 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 360 predicate places. [2024-06-14 11:21:53,861 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 326 transitions, 4097 flow [2024-06-14 11:21:53,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:53,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:53,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:53,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-14 11:21:53,862 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:21:53,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:53,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1570533591, now seen corresponding path program 4 times [2024-06-14 11:21:53,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:53,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971618703] [2024-06-14 11:21:53,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:53,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:53,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:55,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:55,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:55,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971618703] [2024-06-14 11:21:55,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971618703] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:55,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:55,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:21:55,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259918888] [2024-06-14 11:21:55,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:55,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:21:55,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:55,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:21:55,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:21:55,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:21:55,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 326 transitions, 4097 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:55,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:55,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:21:55,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:55,840 INFO L124 PetriNetUnfolderBase]: 911/1669 cut-off events. [2024-06-14 11:21:55,840 INFO L125 PetriNetUnfolderBase]: For 80833/80833 co-relation queries the response was YES. [2024-06-14 11:21:55,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10638 conditions, 1669 events. 911/1669 cut-off events. For 80833/80833 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 9790 event pairs, 172 based on Foata normal form. 2/1671 useless extension candidates. Maximal degree in co-relation 10456. Up to 1499 conditions per place. [2024-06-14 11:21:55,860 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 287 selfloop transitions, 55 changer transitions 0/344 dead transitions. [2024-06-14 11:21:55,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 344 transitions, 4875 flow [2024-06-14 11:21:55,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:21:55,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:21:55,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-14 11:21:55,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-14 11:21:55,861 INFO L175 Difference]: Start difference. First operand has 391 places, 326 transitions, 4097 flow. Second operand 11 states and 123 transitions. [2024-06-14 11:21:55,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 344 transitions, 4875 flow [2024-06-14 11:21:56,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 344 transitions, 4702 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-14 11:21:56,406 INFO L231 Difference]: Finished difference. Result has 393 places, 327 transitions, 4072 flow [2024-06-14 11:21:56,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3924, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4072, PETRI_PLACES=393, PETRI_TRANSITIONS=327} [2024-06-14 11:21:56,406 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 362 predicate places. [2024-06-14 11:21:56,406 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 327 transitions, 4072 flow [2024-06-14 11:21:56,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:56,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:56,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:56,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-14 11:21:56,406 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:21:56,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:56,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1050838179, now seen corresponding path program 5 times [2024-06-14 11:21:56,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:56,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974164491] [2024-06-14 11:21:56,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:56,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:56,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:57,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:57,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:57,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974164491] [2024-06-14 11:21:57,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974164491] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:57,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:57,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:21:57,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139786849] [2024-06-14 11:21:57,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:57,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:21:57,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:57,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:21:57,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:21:57,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:21:57,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 327 transitions, 4072 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:57,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:57,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:21:57,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:58,291 INFO L124 PetriNetUnfolderBase]: 915/1677 cut-off events. [2024-06-14 11:21:58,291 INFO L125 PetriNetUnfolderBase]: For 82722/82722 co-relation queries the response was YES. [2024-06-14 11:21:58,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10677 conditions, 1677 events. 915/1677 cut-off events. For 82722/82722 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 9842 event pairs, 168 based on Foata normal form. 2/1679 useless extension candidates. Maximal degree in co-relation 10494. Up to 1509 conditions per place. [2024-06-14 11:21:58,311 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 298 selfloop transitions, 45 changer transitions 0/345 dead transitions. [2024-06-14 11:21:58,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 345 transitions, 4838 flow [2024-06-14 11:21:58,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:21:58,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:21:58,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-14 11:21:58,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380681818181818 [2024-06-14 11:21:58,312 INFO L175 Difference]: Start difference. First operand has 393 places, 327 transitions, 4072 flow. Second operand 11 states and 119 transitions. [2024-06-14 11:21:58,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 345 transitions, 4838 flow [2024-06-14 11:21:58,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 345 transitions, 4704 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-14 11:21:58,814 INFO L231 Difference]: Finished difference. Result has 395 places, 328 transitions, 4067 flow [2024-06-14 11:21:58,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3938, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4067, PETRI_PLACES=395, PETRI_TRANSITIONS=328} [2024-06-14 11:21:58,814 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 364 predicate places. [2024-06-14 11:21:58,814 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 328 transitions, 4067 flow [2024-06-14 11:21:58,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:58,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:58,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:58,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-14 11:21:58,815 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:21:58,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:58,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1179694395, now seen corresponding path program 6 times [2024-06-14 11:21:58,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:58,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706301532] [2024-06-14 11:21:58,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:58,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:58,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:00,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:00,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:00,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706301532] [2024-06-14 11:22:00,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706301532] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:00,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:00,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:22:00,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493750687] [2024-06-14 11:22:00,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:00,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:22:00,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:00,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:22:00,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:22:00,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:22:00,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 328 transitions, 4067 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:00,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:00,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:22:00,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:22:00,596 INFO L124 PetriNetUnfolderBase]: 919/1685 cut-off events. [2024-06-14 11:22:00,596 INFO L125 PetriNetUnfolderBase]: For 84718/84718 co-relation queries the response was YES. [2024-06-14 11:22:00,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10712 conditions, 1685 events. 919/1685 cut-off events. For 84718/84718 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 9912 event pairs, 186 based on Foata normal form. 2/1687 useless extension candidates. Maximal degree in co-relation 10528. Up to 1544 conditions per place. [2024-06-14 11:22:00,617 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 307 selfloop transitions, 37 changer transitions 0/346 dead transitions. [2024-06-14 11:22:00,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 346 transitions, 4829 flow [2024-06-14 11:22:00,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:22:00,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:22:00,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-14 11:22:00,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33238636363636365 [2024-06-14 11:22:00,618 INFO L175 Difference]: Start difference. First operand has 395 places, 328 transitions, 4067 flow. Second operand 11 states and 117 transitions. [2024-06-14 11:22:00,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 346 transitions, 4829 flow [2024-06-14 11:22:01,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 346 transitions, 4712 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-14 11:22:01,075 INFO L231 Difference]: Finished difference. Result has 397 places, 329 transitions, 4064 flow [2024-06-14 11:22:01,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3950, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4064, PETRI_PLACES=397, PETRI_TRANSITIONS=329} [2024-06-14 11:22:01,075 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 366 predicate places. [2024-06-14 11:22:01,075 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 329 transitions, 4064 flow [2024-06-14 11:22:01,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:01,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:01,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:01,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-14 11:22:01,076 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:22:01,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:01,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1355313541, now seen corresponding path program 7 times [2024-06-14 11:22:01,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:01,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360550892] [2024-06-14 11:22:01,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:01,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:01,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:02,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:02,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:02,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360550892] [2024-06-14 11:22:02,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360550892] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:02,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:02,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:22:02,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718105356] [2024-06-14 11:22:02,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:02,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:22:02,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:02,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:22:02,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:22:02,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:22:02,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 329 transitions, 4064 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:02,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:02,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:22:02,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:22:03,017 INFO L124 PetriNetUnfolderBase]: 923/1693 cut-off events. [2024-06-14 11:22:03,017 INFO L125 PetriNetUnfolderBase]: For 86299/86299 co-relation queries the response was YES. [2024-06-14 11:22:03,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10753 conditions, 1693 events. 923/1693 cut-off events. For 86299/86299 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 9919 event pairs, 178 based on Foata normal form. 2/1695 useless extension candidates. Maximal degree in co-relation 10568. Up to 1522 conditions per place. [2024-06-14 11:22:03,038 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 304 selfloop transitions, 41 changer transitions 0/347 dead transitions. [2024-06-14 11:22:03,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 347 transitions, 4830 flow [2024-06-14 11:22:03,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:22:03,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:22:03,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-14 11:22:03,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33238636363636365 [2024-06-14 11:22:03,039 INFO L175 Difference]: Start difference. First operand has 397 places, 329 transitions, 4064 flow. Second operand 11 states and 117 transitions. [2024-06-14 11:22:03,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 347 transitions, 4830 flow [2024-06-14 11:22:03,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 347 transitions, 4726 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-14 11:22:03,644 INFO L231 Difference]: Finished difference. Result has 399 places, 330 transitions, 4086 flow [2024-06-14 11:22:03,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3960, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4086, PETRI_PLACES=399, PETRI_TRANSITIONS=330} [2024-06-14 11:22:03,644 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 368 predicate places. [2024-06-14 11:22:03,644 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 330 transitions, 4086 flow [2024-06-14 11:22:03,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:03,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:03,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:03,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-14 11:22:03,645 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:22:03,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:03,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1467779225, now seen corresponding path program 8 times [2024-06-14 11:22:03,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:03,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177351979] [2024-06-14 11:22:03,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:03,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:03,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:04,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:04,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:04,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177351979] [2024-06-14 11:22:04,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177351979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:04,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:04,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:22:04,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235171276] [2024-06-14 11:22:04,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:04,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:22:04,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:04,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:22:04,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:22:04,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:22:04,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 330 transitions, 4086 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:04,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:04,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:22:04,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:22:05,438 INFO L124 PetriNetUnfolderBase]: 927/1701 cut-off events. [2024-06-14 11:22:05,438 INFO L125 PetriNetUnfolderBase]: For 88201/88201 co-relation queries the response was YES. [2024-06-14 11:22:05,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10820 conditions, 1701 events. 927/1701 cut-off events. For 88201/88201 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 10003 event pairs, 125 based on Foata normal form. 2/1703 useless extension candidates. Maximal degree in co-relation 10634. Up to 1445 conditions per place. [2024-06-14 11:22:05,459 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 310 selfloop transitions, 38 changer transitions 0/350 dead transitions. [2024-06-14 11:22:05,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 350 transitions, 4864 flow [2024-06-14 11:22:05,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:22:05,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:22:05,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-14 11:22:05,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3153409090909091 [2024-06-14 11:22:05,460 INFO L175 Difference]: Start difference. First operand has 399 places, 330 transitions, 4086 flow. Second operand 11 states and 111 transitions. [2024-06-14 11:22:05,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 350 transitions, 4864 flow [2024-06-14 11:22:05,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 350 transitions, 4748 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-14 11:22:05,985 INFO L231 Difference]: Finished difference. Result has 401 places, 331 transitions, 4090 flow [2024-06-14 11:22:05,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3972, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4090, PETRI_PLACES=401, PETRI_TRANSITIONS=331} [2024-06-14 11:22:05,986 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 370 predicate places. [2024-06-14 11:22:05,986 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 331 transitions, 4090 flow [2024-06-14 11:22:05,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:05,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:05,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:05,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-14 11:22:05,986 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:22:05,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:05,987 INFO L85 PathProgramCache]: Analyzing trace with hash 373600403, now seen corresponding path program 9 times [2024-06-14 11:22:05,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:05,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556560233] [2024-06-14 11:22:05,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:05,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:05,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:07,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:07,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:07,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556560233] [2024-06-14 11:22:07,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556560233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:07,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:07,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:22:07,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106381010] [2024-06-14 11:22:07,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:07,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:22:07,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:07,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:22:07,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:22:07,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:22:07,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 331 transitions, 4090 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:07,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:07,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:22:07,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:22:07,746 INFO L124 PetriNetUnfolderBase]: 931/1709 cut-off events. [2024-06-14 11:22:07,747 INFO L125 PetriNetUnfolderBase]: For 88291/88291 co-relation queries the response was YES. [2024-06-14 11:22:07,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10858 conditions, 1709 events. 931/1709 cut-off events. For 88291/88291 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 10108 event pairs, 191 based on Foata normal form. 2/1711 useless extension candidates. Maximal degree in co-relation 10671. Up to 1558 conditions per place. [2024-06-14 11:22:07,768 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 313 selfloop transitions, 36 changer transitions 0/351 dead transitions. [2024-06-14 11:22:07,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 351 transitions, 4874 flow [2024-06-14 11:22:07,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:22:07,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:22:07,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-14 11:22:07,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-14 11:22:07,769 INFO L175 Difference]: Start difference. First operand has 401 places, 331 transitions, 4090 flow. Second operand 11 states and 120 transitions. [2024-06-14 11:22:07,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 351 transitions, 4874 flow [2024-06-14 11:22:08,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 351 transitions, 4766 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-14 11:22:08,373 INFO L231 Difference]: Finished difference. Result has 403 places, 332 transitions, 4098 flow [2024-06-14 11:22:08,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3982, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4098, PETRI_PLACES=403, PETRI_TRANSITIONS=332} [2024-06-14 11:22:08,373 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 372 predicate places. [2024-06-14 11:22:08,373 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 332 transitions, 4098 flow [2024-06-14 11:22:08,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:08,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:08,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:08,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-14 11:22:08,374 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:22:08,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:08,374 INFO L85 PathProgramCache]: Analyzing trace with hash 377175323, now seen corresponding path program 10 times [2024-06-14 11:22:08,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:08,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338609869] [2024-06-14 11:22:08,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:08,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:08,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:09,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:09,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:09,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338609869] [2024-06-14 11:22:09,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338609869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:09,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:09,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:22:09,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890921945] [2024-06-14 11:22:09,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:09,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:22:09,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:09,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:22:09,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:22:09,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:22:09,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 332 transitions, 4098 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:09,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:09,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:22:09,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:22:10,252 INFO L124 PetriNetUnfolderBase]: 935/1717 cut-off events. [2024-06-14 11:22:10,253 INFO L125 PetriNetUnfolderBase]: For 90109/90109 co-relation queries the response was YES. [2024-06-14 11:22:10,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10897 conditions, 1717 events. 935/1717 cut-off events. For 90109/90109 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 10150 event pairs, 191 based on Foata normal form. 2/1719 useless extension candidates. Maximal degree in co-relation 10709. Up to 1573 conditions per place. [2024-06-14 11:22:10,274 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 311 selfloop transitions, 38 changer transitions 0/351 dead transitions. [2024-06-14 11:22:10,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 351 transitions, 4888 flow [2024-06-14 11:22:10,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:22:10,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:22:10,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-14 11:22:10,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380681818181818 [2024-06-14 11:22:10,275 INFO L175 Difference]: Start difference. First operand has 403 places, 332 transitions, 4098 flow. Second operand 11 states and 119 transitions. [2024-06-14 11:22:10,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 351 transitions, 4888 flow [2024-06-14 11:22:10,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 351 transitions, 4782 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-14 11:22:10,817 INFO L231 Difference]: Finished difference. Result has 405 places, 333 transitions, 4114 flow [2024-06-14 11:22:10,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3992, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4114, PETRI_PLACES=405, PETRI_TRANSITIONS=333} [2024-06-14 11:22:10,818 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 374 predicate places. [2024-06-14 11:22:10,818 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 333 transitions, 4114 flow [2024-06-14 11:22:10,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:10,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:10,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:10,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-14 11:22:10,818 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:22:10,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:10,819 INFO L85 PathProgramCache]: Analyzing trace with hash 377325270, now seen corresponding path program 2 times [2024-06-14 11:22:10,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:10,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479791736] [2024-06-14 11:22:10,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:10,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:10,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:12,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:12,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:12,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479791736] [2024-06-14 11:22:12,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479791736] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:12,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:12,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:22:12,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900005711] [2024-06-14 11:22:12,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:12,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:22:12,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:12,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:22:12,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:22:12,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:22:12,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 333 transitions, 4114 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:12,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:12,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:22:12,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:22:12,720 INFO L124 PetriNetUnfolderBase]: 938/1722 cut-off events. [2024-06-14 11:22:12,720 INFO L125 PetriNetUnfolderBase]: For 86620/86620 co-relation queries the response was YES. [2024-06-14 11:22:12,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10946 conditions, 1722 events. 938/1722 cut-off events. For 86620/86620 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 10183 event pairs, 191 based on Foata normal form. 1/1723 useless extension candidates. Maximal degree in co-relation 10757. Up to 1569 conditions per place. [2024-06-14 11:22:12,741 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 304 selfloop transitions, 47 changer transitions 0/353 dead transitions. [2024-06-14 11:22:12,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 353 transitions, 4976 flow [2024-06-14 11:22:12,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:22:12,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:22:12,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-14 11:22:12,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-14 11:22:12,742 INFO L175 Difference]: Start difference. First operand has 405 places, 333 transitions, 4114 flow. Second operand 11 states and 122 transitions. [2024-06-14 11:22:12,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 353 transitions, 4976 flow [2024-06-14 11:22:13,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 353 transitions, 4864 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-14 11:22:13,242 INFO L231 Difference]: Finished difference. Result has 407 places, 335 transitions, 4192 flow [2024-06-14 11:22:13,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4002, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4192, PETRI_PLACES=407, PETRI_TRANSITIONS=335} [2024-06-14 11:22:13,243 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 376 predicate places. [2024-06-14 11:22:13,243 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 335 transitions, 4192 flow [2024-06-14 11:22:13,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:13,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:13,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:13,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-14 11:22:13,243 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:22:13,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:13,243 INFO L85 PathProgramCache]: Analyzing trace with hash 377325053, now seen corresponding path program 11 times [2024-06-14 11:22:13,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:13,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840207776] [2024-06-14 11:22:13,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:13,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:13,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:14,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:14,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:14,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840207776] [2024-06-14 11:22:14,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840207776] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:14,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:14,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:22:14,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864965035] [2024-06-14 11:22:14,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:14,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:22:14,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:14,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:22:14,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:22:14,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:22:14,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 335 transitions, 4192 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:14,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:14,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:22:14,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:22:15,296 INFO L124 PetriNetUnfolderBase]: 942/1730 cut-off events. [2024-06-14 11:22:15,297 INFO L125 PetriNetUnfolderBase]: For 93420/93420 co-relation queries the response was YES. [2024-06-14 11:22:15,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11019 conditions, 1730 events. 942/1730 cut-off events. For 93420/93420 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 10258 event pairs, 188 based on Foata normal form. 2/1732 useless extension candidates. Maximal degree in co-relation 10829. Up to 1580 conditions per place. [2024-06-14 11:22:15,318 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 309 selfloop transitions, 43 changer transitions 0/354 dead transitions. [2024-06-14 11:22:15,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 354 transitions, 5006 flow [2024-06-14 11:22:15,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:22:15,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:22:15,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-14 11:22:15,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-14 11:22:15,319 INFO L175 Difference]: Start difference. First operand has 407 places, 335 transitions, 4192 flow. Second operand 11 states and 121 transitions. [2024-06-14 11:22:15,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 354 transitions, 5006 flow [2024-06-14 11:22:16,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 354 transitions, 4850 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-14 11:22:16,016 INFO L231 Difference]: Finished difference. Result has 409 places, 336 transitions, 4171 flow [2024-06-14 11:22:16,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4036, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4171, PETRI_PLACES=409, PETRI_TRANSITIONS=336} [2024-06-14 11:22:16,017 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 378 predicate places. [2024-06-14 11:22:16,017 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 336 transitions, 4171 flow [2024-06-14 11:22:16,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:16,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:16,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:16,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-14 11:22:16,017 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:22:16,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:16,017 INFO L85 PathProgramCache]: Analyzing trace with hash -292058821, now seen corresponding path program 12 times [2024-06-14 11:22:16,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:16,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204834504] [2024-06-14 11:22:16,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:16,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:16,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:17,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:17,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:17,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204834504] [2024-06-14 11:22:17,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204834504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:17,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:17,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:22:17,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506000586] [2024-06-14 11:22:17,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:17,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:22:17,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:17,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:22:17,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:22:17,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:22:17,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 336 transitions, 4171 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:17,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:17,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:22:17,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:22:17,967 INFO L124 PetriNetUnfolderBase]: 946/1738 cut-off events. [2024-06-14 11:22:17,967 INFO L125 PetriNetUnfolderBase]: For 95473/95473 co-relation queries the response was YES. [2024-06-14 11:22:17,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11068 conditions, 1738 events. 946/1738 cut-off events. For 95473/95473 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 10327 event pairs, 186 based on Foata normal form. 2/1740 useless extension candidates. Maximal degree in co-relation 10877. Up to 1572 conditions per place. [2024-06-14 11:22:17,989 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 310 selfloop transitions, 43 changer transitions 0/355 dead transitions. [2024-06-14 11:22:17,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 355 transitions, 4981 flow [2024-06-14 11:22:17,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:22:17,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:22:17,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-14 11:22:17,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-14 11:22:17,989 INFO L175 Difference]: Start difference. First operand has 409 places, 336 transitions, 4171 flow. Second operand 11 states and 122 transitions. [2024-06-14 11:22:17,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 355 transitions, 4981 flow [2024-06-14 11:22:18,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 355 transitions, 4858 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-14 11:22:18,586 INFO L231 Difference]: Finished difference. Result has 411 places, 337 transitions, 4184 flow [2024-06-14 11:22:18,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4048, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4184, PETRI_PLACES=411, PETRI_TRANSITIONS=337} [2024-06-14 11:22:18,586 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 380 predicate places. [2024-06-14 11:22:18,586 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 337 transitions, 4184 flow [2024-06-14 11:22:18,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:18,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:18,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:18,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-14 11:22:18,587 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:22:18,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:18,587 INFO L85 PathProgramCache]: Analyzing trace with hash -147952965, now seen corresponding path program 1 times [2024-06-14 11:22:18,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:18,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658771977] [2024-06-14 11:22:18,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:18,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:18,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:19,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:19,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:19,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658771977] [2024-06-14 11:22:19,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658771977] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:19,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:19,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:22:19,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205387218] [2024-06-14 11:22:19,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:19,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:22:19,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:19,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:22:19,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:22:20,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:22:20,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 337 transitions, 4184 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:20,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:20,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:22:20,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:22:20,818 INFO L124 PetriNetUnfolderBase]: 962/1776 cut-off events. [2024-06-14 11:22:20,818 INFO L125 PetriNetUnfolderBase]: For 138159/138159 co-relation queries the response was YES. [2024-06-14 11:22:20,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11189 conditions, 1776 events. 962/1776 cut-off events. For 138159/138159 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 10597 event pairs, 195 based on Foata normal form. 10/1786 useless extension candidates. Maximal degree in co-relation 10997. Up to 1591 conditions per place. [2024-06-14 11:22:20,840 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 310 selfloop transitions, 38 changer transitions 11/361 dead transitions. [2024-06-14 11:22:20,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 361 transitions, 5038 flow [2024-06-14 11:22:20,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:22:20,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:22:20,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-14 11:22:20,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3411458333333333 [2024-06-14 11:22:20,841 INFO L175 Difference]: Start difference. First operand has 411 places, 337 transitions, 4184 flow. Second operand 12 states and 131 transitions. [2024-06-14 11:22:20,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 361 transitions, 5038 flow [2024-06-14 11:22:21,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 361 transitions, 4912 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-14 11:22:21,500 INFO L231 Difference]: Finished difference. Result has 414 places, 334 transitions, 4090 flow [2024-06-14 11:22:21,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4058, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4090, PETRI_PLACES=414, PETRI_TRANSITIONS=334} [2024-06-14 11:22:21,501 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 383 predicate places. [2024-06-14 11:22:21,501 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 334 transitions, 4090 flow [2024-06-14 11:22:21,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:21,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:21,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:21,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-14 11:22:21,501 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:22:21,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:21,501 INFO L85 PathProgramCache]: Analyzing trace with hash 904056583, now seen corresponding path program 13 times [2024-06-14 11:22:21,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:21,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089954494] [2024-06-14 11:22:21,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:21,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:21,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:22,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:22,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:22,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089954494] [2024-06-14 11:22:22,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089954494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:22,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:22,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:22:22,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586924451] [2024-06-14 11:22:22,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:22,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:22:22,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:22,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:22:22,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:22:22,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:22:22,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 334 transitions, 4090 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:22,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:22,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:22:22,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:22:23,346 INFO L124 PetriNetUnfolderBase]: 940/1734 cut-off events. [2024-06-14 11:22:23,346 INFO L125 PetriNetUnfolderBase]: For 98319/98319 co-relation queries the response was YES. [2024-06-14 11:22:23,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10948 conditions, 1734 events. 940/1734 cut-off events. For 98319/98319 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 10333 event pairs, 176 based on Foata normal form. 2/1736 useless extension candidates. Maximal degree in co-relation 10755. Up to 1553 conditions per place. [2024-06-14 11:22:23,369 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 303 selfloop transitions, 48 changer transitions 0/353 dead transitions. [2024-06-14 11:22:23,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 353 transitions, 4912 flow [2024-06-14 11:22:23,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:22:23,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:22:23,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-14 11:22:23,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-14 11:22:23,370 INFO L175 Difference]: Start difference. First operand has 414 places, 334 transitions, 4090 flow. Second operand 11 states and 120 transitions. [2024-06-14 11:22:23,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 353 transitions, 4912 flow [2024-06-14 11:22:23,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 353 transitions, 4820 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-14 11:22:23,958 INFO L231 Difference]: Finished difference. Result has 412 places, 335 transitions, 4146 flow [2024-06-14 11:22:23,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3998, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4146, PETRI_PLACES=412, PETRI_TRANSITIONS=335} [2024-06-14 11:22:23,958 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 381 predicate places. [2024-06-14 11:22:23,958 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 335 transitions, 4146 flow [2024-06-14 11:22:23,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:23,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:23,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:23,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-14 11:22:23,959 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:22:23,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:23,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1573429297, now seen corresponding path program 14 times [2024-06-14 11:22:23,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:23,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854603121] [2024-06-14 11:22:23,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:23,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:23,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:25,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:25,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:25,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854603121] [2024-06-14 11:22:25,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854603121] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:25,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:25,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:22:25,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958432348] [2024-06-14 11:22:25,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:25,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:22:25,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:25,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:22:25,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:22:25,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:22:25,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 335 transitions, 4146 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:25,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:25,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:22:25,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:22:25,758 INFO L124 PetriNetUnfolderBase]: 980/1814 cut-off events. [2024-06-14 11:22:25,758 INFO L125 PetriNetUnfolderBase]: For 164835/164835 co-relation queries the response was YES. [2024-06-14 11:22:25,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12771 conditions, 1814 events. 980/1814 cut-off events. For 164835/164835 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 10873 event pairs, 192 based on Foata normal form. 2/1816 useless extension candidates. Maximal degree in co-relation 12578. Up to 1445 conditions per place. [2024-06-14 11:22:25,776 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 299 selfloop transitions, 59 changer transitions 0/360 dead transitions. [2024-06-14 11:22:25,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 360 transitions, 5292 flow [2024-06-14 11:22:25,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:22:25,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:22:25,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-14 11:22:25,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-14 11:22:25,777 INFO L175 Difference]: Start difference. First operand has 412 places, 335 transitions, 4146 flow. Second operand 11 states and 129 transitions. [2024-06-14 11:22:25,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 360 transitions, 5292 flow [2024-06-14 11:22:26,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 360 transitions, 5154 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-14 11:22:26,705 INFO L231 Difference]: Finished difference. Result has 414 places, 336 transitions, 4180 flow [2024-06-14 11:22:26,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4008, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4180, PETRI_PLACES=414, PETRI_TRANSITIONS=336} [2024-06-14 11:22:26,706 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 383 predicate places. [2024-06-14 11:22:26,706 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 336 transitions, 4180 flow [2024-06-14 11:22:26,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:26,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:26,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:26,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-14 11:22:26,706 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:22:26,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:26,706 INFO L85 PathProgramCache]: Analyzing trace with hash 704754793, now seen corresponding path program 15 times [2024-06-14 11:22:26,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:26,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141948476] [2024-06-14 11:22:26,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:26,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:26,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:28,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:28,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:28,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141948476] [2024-06-14 11:22:28,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141948476] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:28,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:28,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:22:28,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471677876] [2024-06-14 11:22:28,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:28,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:22:28,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:28,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:22:28,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:22:28,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:22:28,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 336 transitions, 4180 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:28,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:28,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:22:28,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:22:28,835 INFO L124 PetriNetUnfolderBase]: 984/1822 cut-off events. [2024-06-14 11:22:28,835 INFO L125 PetriNetUnfolderBase]: For 168163/168163 co-relation queries the response was YES. [2024-06-14 11:22:28,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12864 conditions, 1822 events. 984/1822 cut-off events. For 168163/168163 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 10906 event pairs, 202 based on Foata normal form. 2/1824 useless extension candidates. Maximal degree in co-relation 12670. Up to 1666 conditions per place. [2024-06-14 11:22:28,858 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 311 selfloop transitions, 42 changer transitions 0/355 dead transitions. [2024-06-14 11:22:28,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 355 transitions, 5010 flow [2024-06-14 11:22:28,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:22:28,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:22:28,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-14 11:22:28,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380681818181818 [2024-06-14 11:22:28,859 INFO L175 Difference]: Start difference. First operand has 414 places, 336 transitions, 4180 flow. Second operand 11 states and 119 transitions. [2024-06-14 11:22:28,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 355 transitions, 5010 flow [2024-06-14 11:22:29,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 355 transitions, 4848 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-14 11:22:29,763 INFO L231 Difference]: Finished difference. Result has 416 places, 337 transitions, 4158 flow [2024-06-14 11:22:29,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4018, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4158, PETRI_PLACES=416, PETRI_TRANSITIONS=337} [2024-06-14 11:22:29,764 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 385 predicate places. [2024-06-14 11:22:29,764 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 337 transitions, 4158 flow [2024-06-14 11:22:29,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:29,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:29,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:29,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-14 11:22:29,764 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:22:29,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:29,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1374127507, now seen corresponding path program 16 times [2024-06-14 11:22:29,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:29,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982678164] [2024-06-14 11:22:29,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:29,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:29,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:30,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:30,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:30,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982678164] [2024-06-14 11:22:30,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982678164] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:30,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:30,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:22:30,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132330369] [2024-06-14 11:22:30,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:30,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:22:30,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:30,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:22:30,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:22:31,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:22:31,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 337 transitions, 4158 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:31,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:31,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:22:31,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:22:31,681 INFO L124 PetriNetUnfolderBase]: 952/1758 cut-off events. [2024-06-14 11:22:31,681 INFO L125 PetriNetUnfolderBase]: For 103182/103182 co-relation queries the response was YES. [2024-06-14 11:22:31,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11169 conditions, 1758 events. 952/1758 cut-off events. For 103182/103182 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 10537 event pairs, 182 based on Foata normal form. 2/1760 useless extension candidates. Maximal degree in co-relation 10974. Up to 1588 conditions per place. [2024-06-14 11:22:31,707 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 311 selfloop transitions, 43 changer transitions 0/356 dead transitions. [2024-06-14 11:22:31,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 356 transitions, 4984 flow [2024-06-14 11:22:31,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:22:31,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:22:31,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-14 11:22:31,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-14 11:22:31,708 INFO L175 Difference]: Start difference. First operand has 416 places, 337 transitions, 4158 flow. Second operand 11 states and 120 transitions. [2024-06-14 11:22:31,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 356 transitions, 4984 flow [2024-06-14 11:22:32,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 356 transitions, 4854 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-14 11:22:32,343 INFO L231 Difference]: Finished difference. Result has 418 places, 338 transitions, 4172 flow [2024-06-14 11:22:32,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4028, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4172, PETRI_PLACES=418, PETRI_TRANSITIONS=338} [2024-06-14 11:22:32,344 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 387 predicate places. [2024-06-14 11:22:32,344 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 338 transitions, 4172 flow [2024-06-14 11:22:32,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:32,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:32,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:32,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-14 11:22:32,344 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:22:32,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:32,344 INFO L85 PathProgramCache]: Analyzing trace with hash 704605063, now seen corresponding path program 17 times [2024-06-14 11:22:32,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:32,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248136816] [2024-06-14 11:22:32,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:32,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:32,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:33,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:33,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:33,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248136816] [2024-06-14 11:22:33,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248136816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:33,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:33,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:22:33,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275326579] [2024-06-14 11:22:33,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:33,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:22:33,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:33,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:22:33,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:22:33,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:22:33,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 338 transitions, 4172 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:33,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:33,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:22:33,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:22:34,286 INFO L124 PetriNetUnfolderBase]: 971/1799 cut-off events. [2024-06-14 11:22:34,286 INFO L125 PetriNetUnfolderBase]: For 135424/135424 co-relation queries the response was YES. [2024-06-14 11:22:34,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11968 conditions, 1799 events. 971/1799 cut-off events. For 135424/135424 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 10778 event pairs, 184 based on Foata normal form. 2/1801 useless extension candidates. Maximal degree in co-relation 11772. Up to 1606 conditions per place. [2024-06-14 11:22:34,309 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 318 selfloop transitions, 40 changer transitions 0/360 dead transitions. [2024-06-14 11:22:34,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 360 transitions, 5232 flow [2024-06-14 11:22:34,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:22:34,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:22:34,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-14 11:22:34,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-14 11:22:34,310 INFO L175 Difference]: Start difference. First operand has 418 places, 338 transitions, 4172 flow. Second operand 11 states and 120 transitions. [2024-06-14 11:22:34,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 360 transitions, 5232 flow [2024-06-14 11:22:35,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 360 transitions, 5098 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-14 11:22:35,056 INFO L231 Difference]: Finished difference. Result has 420 places, 339 transitions, 4178 flow [2024-06-14 11:22:35,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4038, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4178, PETRI_PLACES=420, PETRI_TRANSITIONS=339} [2024-06-14 11:22:35,057 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 389 predicate places. [2024-06-14 11:22:35,057 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 339 transitions, 4178 flow [2024-06-14 11:22:35,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:35,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:35,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:35,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-14 11:22:35,057 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:22:35,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:35,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1379705213, now seen corresponding path program 2 times [2024-06-14 11:22:35,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:35,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781054919] [2024-06-14 11:22:35,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:35,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:35,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:37,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:37,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:37,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781054919] [2024-06-14 11:22:37,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781054919] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:37,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:37,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:22:37,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735499429] [2024-06-14 11:22:37,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:37,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:22:37,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:37,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:22:37,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:22:37,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:22:37,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 339 transitions, 4178 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:37,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:37,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:22:37,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:22:37,934 INFO L124 PetriNetUnfolderBase]: 987/1835 cut-off events. [2024-06-14 11:22:37,934 INFO L125 PetriNetUnfolderBase]: For 182380/182380 co-relation queries the response was YES. [2024-06-14 11:22:37,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12063 conditions, 1835 events. 987/1835 cut-off events. For 182380/182380 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 11083 event pairs, 201 based on Foata normal form. 10/1845 useless extension candidates. Maximal degree in co-relation 11866. Up to 1625 conditions per place. [2024-06-14 11:22:37,956 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 307 selfloop transitions, 38 changer transitions 16/363 dead transitions. [2024-06-14 11:22:37,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 363 transitions, 5042 flow [2024-06-14 11:22:37,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:22:37,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:22:37,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-14 11:22:37,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-14 11:22:37,956 INFO L175 Difference]: Start difference. First operand has 420 places, 339 transitions, 4178 flow. Second operand 12 states and 132 transitions. [2024-06-14 11:22:37,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 363 transitions, 5042 flow [2024-06-14 11:22:38,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 363 transitions, 4912 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-14 11:22:38,745 INFO L231 Difference]: Finished difference. Result has 423 places, 333 transitions, 4056 flow [2024-06-14 11:22:38,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4048, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4056, PETRI_PLACES=423, PETRI_TRANSITIONS=333} [2024-06-14 11:22:38,746 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 392 predicate places. [2024-06-14 11:22:38,746 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 333 transitions, 4056 flow [2024-06-14 11:22:38,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:38,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:38,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:38,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-14 11:22:38,746 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:22:38,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:38,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1573644623, now seen corresponding path program 3 times [2024-06-14 11:22:38,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:38,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729305926] [2024-06-14 11:22:38,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:38,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:38,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:40,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:40,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:40,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729305926] [2024-06-14 11:22:40,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729305926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:40,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:40,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:22:40,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660714946] [2024-06-14 11:22:40,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:40,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:22:40,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:40,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:22:40,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:22:40,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:22:40,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 333 transitions, 4056 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:40,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:40,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:22:40,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:22:41,153 INFO L124 PetriNetUnfolderBase]: 952/1770 cut-off events. [2024-06-14 11:22:41,153 INFO L125 PetriNetUnfolderBase]: For 151974/151974 co-relation queries the response was YES. [2024-06-14 11:22:41,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11034 conditions, 1770 events. 952/1770 cut-off events. For 151974/151974 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 10644 event pairs, 186 based on Foata normal form. 10/1780 useless extension candidates. Maximal degree in co-relation 10836. Up to 1495 conditions per place. [2024-06-14 11:22:41,224 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 291 selfloop transitions, 53 changer transitions 11/357 dead transitions. [2024-06-14 11:22:41,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 357 transitions, 4908 flow [2024-06-14 11:22:41,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:22:41,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:22:41,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-14 11:22:41,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-14 11:22:41,225 INFO L175 Difference]: Start difference. First operand has 423 places, 333 transitions, 4056 flow. Second operand 12 states and 136 transitions. [2024-06-14 11:22:41,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 357 transitions, 4908 flow [2024-06-14 11:22:41,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 357 transitions, 4818 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-14 11:22:41,807 INFO L231 Difference]: Finished difference. Result has 419 places, 330 transitions, 4036 flow [2024-06-14 11:22:41,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3966, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4036, PETRI_PLACES=419, PETRI_TRANSITIONS=330} [2024-06-14 11:22:41,807 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 388 predicate places. [2024-06-14 11:22:41,807 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 330 transitions, 4036 flow [2024-06-14 11:22:41,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:41,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:41,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:41,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-14 11:22:41,807 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:22:41,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:41,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1580786527, now seen corresponding path program 18 times [2024-06-14 11:22:41,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:41,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984178938] [2024-06-14 11:22:41,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:41,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:41,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:42,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:42,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:42,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984178938] [2024-06-14 11:22:42,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984178938] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:42,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:42,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:22:42,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551234758] [2024-06-14 11:22:42,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:42,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:22:42,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:42,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:22:42,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:22:43,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:22:43,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 330 transitions, 4036 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:43,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:43,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:22:43,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:22:43,583 INFO L124 PetriNetUnfolderBase]: 930/1728 cut-off events. [2024-06-14 11:22:43,583 INFO L125 PetriNetUnfolderBase]: For 104822/104822 co-relation queries the response was YES. [2024-06-14 11:22:43,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10901 conditions, 1728 events. 930/1728 cut-off events. For 104822/104822 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 10387 event pairs, 182 based on Foata normal form. 2/1730 useless extension candidates. Maximal degree in co-relation 10704. Up to 1522 conditions per place. [2024-06-14 11:22:43,605 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 296 selfloop transitions, 51 changer transitions 0/349 dead transitions. [2024-06-14 11:22:43,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 349 transitions, 4858 flow [2024-06-14 11:22:43,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:22:43,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:22:43,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-14 11:22:43,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-14 11:22:43,606 INFO L175 Difference]: Start difference. First operand has 419 places, 330 transitions, 4036 flow. Second operand 11 states and 121 transitions. [2024-06-14 11:22:43,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 349 transitions, 4858 flow [2024-06-14 11:22:44,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 349 transitions, 4746 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 11:22:44,246 INFO L231 Difference]: Finished difference. Result has 417 places, 331 transitions, 4086 flow [2024-06-14 11:22:44,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3924, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4086, PETRI_PLACES=417, PETRI_TRANSITIONS=331} [2024-06-14 11:22:44,246 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 386 predicate places. [2024-06-14 11:22:44,246 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 331 transitions, 4086 flow [2024-06-14 11:22:44,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:44,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:44,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:44,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-14 11:22:44,246 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:22:44,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:44,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1581063233, now seen corresponding path program 4 times [2024-06-14 11:22:44,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:44,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244032259] [2024-06-14 11:22:44,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:44,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:44,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:45,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:45,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:45,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244032259] [2024-06-14 11:22:45,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244032259] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:45,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:45,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:22:45,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005343560] [2024-06-14 11:22:45,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:45,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:22:45,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:45,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:22:45,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:22:45,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:22:45,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 331 transitions, 4086 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:45,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:45,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:22:45,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:22:46,338 INFO L124 PetriNetUnfolderBase]: 979/1831 cut-off events. [2024-06-14 11:22:46,339 INFO L125 PetriNetUnfolderBase]: For 197686/197686 co-relation queries the response was YES. [2024-06-14 11:22:46,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12431 conditions, 1831 events. 979/1831 cut-off events. For 197686/197686 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 11098 event pairs, 195 based on Foata normal form. 8/1839 useless extension candidates. Maximal degree in co-relation 12234. Up to 1425 conditions per place. [2024-06-14 11:22:46,357 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 299 selfloop transitions, 53 changer transitions 7/361 dead transitions. [2024-06-14 11:22:46,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 361 transitions, 5210 flow [2024-06-14 11:22:46,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:22:46,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:22:46,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-14 11:22:46,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-14 11:22:46,358 INFO L175 Difference]: Start difference. First operand has 417 places, 331 transitions, 4086 flow. Second operand 12 states and 138 transitions. [2024-06-14 11:22:46,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 361 transitions, 5210 flow [2024-06-14 11:22:47,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 361 transitions, 5058 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-14 11:22:47,177 INFO L231 Difference]: Finished difference. Result has 420 places, 329 transitions, 4007 flow [2024-06-14 11:22:47,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3934, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4007, PETRI_PLACES=420, PETRI_TRANSITIONS=329} [2024-06-14 11:22:47,178 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 389 predicate places. [2024-06-14 11:22:47,178 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 329 transitions, 4007 flow [2024-06-14 11:22:47,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:47,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:47,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:47,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-14 11:22:47,178 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:22:47,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:47,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1580794463, now seen corresponding path program 5 times [2024-06-14 11:22:47,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:47,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746884325] [2024-06-14 11:22:47,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:47,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:47,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:48,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:48,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:48,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746884325] [2024-06-14 11:22:48,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746884325] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:48,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:48,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:22:48,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382416591] [2024-06-14 11:22:48,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:48,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:22:48,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:48,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:22:48,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:22:48,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:22:48,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 329 transitions, 4007 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:48,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:48,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:22:48,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:22:49,206 INFO L124 PetriNetUnfolderBase]: 961/1797 cut-off events. [2024-06-14 11:22:49,206 INFO L125 PetriNetUnfolderBase]: For 212166/212166 co-relation queries the response was YES. [2024-06-14 11:22:49,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12158 conditions, 1797 events. 961/1797 cut-off events. For 212166/212166 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 10829 event pairs, 201 based on Foata normal form. 10/1807 useless extension candidates. Maximal degree in co-relation 11960. Up to 1537 conditions per place. [2024-06-14 11:22:49,229 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 288 selfloop transitions, 47 changer transitions 16/353 dead transitions. [2024-06-14 11:22:49,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 353 transitions, 4851 flow [2024-06-14 11:22:49,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:22:49,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:22:49,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-14 11:22:49,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489583333333333 [2024-06-14 11:22:49,230 INFO L175 Difference]: Start difference. First operand has 420 places, 329 transitions, 4007 flow. Second operand 12 states and 134 transitions. [2024-06-14 11:22:49,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 353 transitions, 4851 flow [2024-06-14 11:22:50,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 353 transitions, 4739 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 11:22:50,053 INFO L231 Difference]: Finished difference. Result has 419 places, 323 transitions, 3911 flow [2024-06-14 11:22:50,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3895, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3911, PETRI_PLACES=419, PETRI_TRANSITIONS=323} [2024-06-14 11:22:50,053 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 388 predicate places. [2024-06-14 11:22:50,053 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 323 transitions, 3911 flow [2024-06-14 11:22:50,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:50,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:50,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:50,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-14 11:22:50,054 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:22:50,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:50,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1581053933, now seen corresponding path program 6 times [2024-06-14 11:22:50,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:50,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413207423] [2024-06-14 11:22:50,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:50,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:50,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:51,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:51,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:51,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413207423] [2024-06-14 11:22:51,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413207423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:51,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:51,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:22:51,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321554620] [2024-06-14 11:22:51,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:51,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:22:51,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:51,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:22:51,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:22:51,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:22:51,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 323 transitions, 3911 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:51,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:51,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:22:51,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:22:51,955 INFO L124 PetriNetUnfolderBase]: 929/1741 cut-off events. [2024-06-14 11:22:51,955 INFO L125 PetriNetUnfolderBase]: For 187454/187454 co-relation queries the response was YES. [2024-06-14 11:22:51,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11353 conditions, 1741 events. 929/1741 cut-off events. For 187454/187454 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 10451 event pairs, 193 based on Foata normal form. 10/1751 useless extension candidates. Maximal degree in co-relation 11156. Up to 1488 conditions per place. [2024-06-14 11:22:51,979 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 285 selfloop transitions, 46 changer transitions 14/347 dead transitions. [2024-06-14 11:22:51,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 347 transitions, 4743 flow [2024-06-14 11:22:51,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:22:51,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:22:51,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-14 11:22:51,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3411458333333333 [2024-06-14 11:22:51,980 INFO L175 Difference]: Start difference. First operand has 419 places, 323 transitions, 3911 flow. Second operand 12 states and 131 transitions. [2024-06-14 11:22:51,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 347 transitions, 4743 flow [2024-06-14 11:22:52,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 347 transitions, 4627 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-14 11:22:52,815 INFO L231 Difference]: Finished difference. Result has 414 places, 319 transitions, 3831 flow [2024-06-14 11:22:52,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3795, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3831, PETRI_PLACES=414, PETRI_TRANSITIONS=319} [2024-06-14 11:22:52,816 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 383 predicate places. [2024-06-14 11:22:52,816 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 319 transitions, 3831 flow [2024-06-14 11:22:52,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:52,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:52,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:52,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-14 11:22:52,816 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:22:52,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:52,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1852271439, now seen corresponding path program 19 times [2024-06-14 11:22:52,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:52,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814400666] [2024-06-14 11:22:52,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:52,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:52,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:54,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:54,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:54,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814400666] [2024-06-14 11:22:54,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814400666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:54,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:54,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:22:54,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105824306] [2024-06-14 11:22:54,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:54,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:22:54,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:54,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:22:54,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:22:54,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:22:54,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 319 transitions, 3831 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:54,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:54,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:22:54,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:22:54,655 INFO L124 PetriNetUnfolderBase]: 912/1708 cut-off events. [2024-06-14 11:22:54,655 INFO L125 PetriNetUnfolderBase]: For 171287/171287 co-relation queries the response was YES. [2024-06-14 11:22:54,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11109 conditions, 1708 events. 912/1708 cut-off events. For 171287/171287 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 10197 event pairs, 125 based on Foata normal form. 8/1716 useless extension candidates. Maximal degree in co-relation 10914. Up to 1344 conditions per place. [2024-06-14 11:22:54,676 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 273 selfloop transitions, 26 changer transitions 37/338 dead transitions. [2024-06-14 11:22:54,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 338 transitions, 4607 flow [2024-06-14 11:22:54,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:22:54,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:22:54,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-14 11:22:54,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325 [2024-06-14 11:22:54,677 INFO L175 Difference]: Start difference. First operand has 414 places, 319 transitions, 3831 flow. Second operand 10 states and 104 transitions. [2024-06-14 11:22:54,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 338 transitions, 4607 flow [2024-06-14 11:22:55,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 338 transitions, 4487 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-14 11:22:55,425 INFO L231 Difference]: Finished difference. Result has 409 places, 295 transitions, 3499 flow [2024-06-14 11:22:55,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3711, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3499, PETRI_PLACES=409, PETRI_TRANSITIONS=295} [2024-06-14 11:22:55,426 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 378 predicate places. [2024-06-14 11:22:55,426 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 295 transitions, 3499 flow [2024-06-14 11:22:55,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:55,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:55,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:55,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-14 11:22:55,427 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:22:55,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:55,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1155874371, now seen corresponding path program 20 times [2024-06-14 11:22:55,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:55,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542085733] [2024-06-14 11:22:55,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:55,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:55,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:56,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:56,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:56,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542085733] [2024-06-14 11:22:56,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542085733] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:56,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:56,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:22:56,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509712734] [2024-06-14 11:22:56,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:56,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:22:56,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:56,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:22:56,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:22:56,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:22:56,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 295 transitions, 3499 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:56,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:56,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:22:56,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:22:57,408 INFO L124 PetriNetUnfolderBase]: 811/1511 cut-off events. [2024-06-14 11:22:57,409 INFO L125 PetriNetUnfolderBase]: For 136350/136350 co-relation queries the response was YES. [2024-06-14 11:22:57,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10175 conditions, 1511 events. 811/1511 cut-off events. For 136350/136350 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 8716 event pairs, 140 based on Foata normal form. 2/1513 useless extension candidates. Maximal degree in co-relation 9998. Up to 1291 conditions per place. [2024-06-14 11:22:57,427 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 239 selfloop transitions, 68 changer transitions 1/310 dead transitions. [2024-06-14 11:22:57,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 310 transitions, 4225 flow [2024-06-14 11:22:57,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:22:57,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:22:57,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-14 11:22:57,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-14 11:22:57,429 INFO L175 Difference]: Start difference. First operand has 409 places, 295 transitions, 3499 flow. Second operand 10 states and 108 transitions. [2024-06-14 11:22:57,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 310 transitions, 4225 flow [2024-06-14 11:22:58,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 310 transitions, 4100 flow, removed 11 selfloop flow, removed 19 redundant places. [2024-06-14 11:22:58,139 INFO L231 Difference]: Finished difference. Result has 380 places, 296 transitions, 3575 flow [2024-06-14 11:22:58,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3378, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3575, PETRI_PLACES=380, PETRI_TRANSITIONS=296} [2024-06-14 11:22:58,139 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 349 predicate places. [2024-06-14 11:22:58,139 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 296 transitions, 3575 flow [2024-06-14 11:22:58,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:58,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:58,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:58,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-14 11:22:58,140 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:22:58,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:58,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1152149721, now seen corresponding path program 21 times [2024-06-14 11:22:58,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:58,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406744349] [2024-06-14 11:22:58,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:58,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:58,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:59,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:59,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:59,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406744349] [2024-06-14 11:22:59,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406744349] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:59,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:59,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:22:59,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739978989] [2024-06-14 11:22:59,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:59,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:22:59,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:59,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:22:59,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:22:59,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:22:59,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 296 transitions, 3575 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:59,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:59,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:22:59,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:23:00,070 INFO L124 PetriNetUnfolderBase]: 815/1519 cut-off events. [2024-06-14 11:23:00,070 INFO L125 PetriNetUnfolderBase]: For 123245/123245 co-relation queries the response was YES. [2024-06-14 11:23:00,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10204 conditions, 1519 events. 815/1519 cut-off events. For 123245/123245 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 8768 event pairs, 138 based on Foata normal form. 2/1521 useless extension candidates. Maximal degree in co-relation 10034. Up to 1320 conditions per place. [2024-06-14 11:23:00,088 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 264 selfloop transitions, 44 changer transitions 1/311 dead transitions. [2024-06-14 11:23:00,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 311 transitions, 4277 flow [2024-06-14 11:23:00,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:23:00,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:23:00,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-14 11:23:00,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31875 [2024-06-14 11:23:00,089 INFO L175 Difference]: Start difference. First operand has 380 places, 296 transitions, 3575 flow. Second operand 10 states and 102 transitions. [2024-06-14 11:23:00,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 311 transitions, 4277 flow [2024-06-14 11:23:00,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 311 transitions, 4096 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-14 11:23:00,692 INFO L231 Difference]: Finished difference. Result has 382 places, 297 transitions, 3544 flow [2024-06-14 11:23:00,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3396, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3544, PETRI_PLACES=382, PETRI_TRANSITIONS=297} [2024-06-14 11:23:00,692 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 351 predicate places. [2024-06-14 11:23:00,692 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 297 transitions, 3544 flow [2024-06-14 11:23:00,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:00,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:23:00,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:23:00,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-14 11:23:00,693 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:23:00,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:23:00,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1155724641, now seen corresponding path program 22 times [2024-06-14 11:23:00,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:23:00,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436953976] [2024-06-14 11:23:00,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:23:00,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:23:00,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:23:01,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:23:01,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:23:01,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436953976] [2024-06-14 11:23:01,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436953976] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:23:01,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:23:01,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:23:01,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093966704] [2024-06-14 11:23:01,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:23:01,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:23:01,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:23:01,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:23:01,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:23:02,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:23:02,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 297 transitions, 3544 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:02,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:23:02,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:23:02,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:23:02,639 INFO L124 PetriNetUnfolderBase]: 819/1527 cut-off events. [2024-06-14 11:23:02,639 INFO L125 PetriNetUnfolderBase]: For 123117/123117 co-relation queries the response was YES. [2024-06-14 11:23:02,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10195 conditions, 1527 events. 819/1527 cut-off events. For 123117/123117 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 8839 event pairs, 136 based on Foata normal form. 2/1529 useless extension candidates. Maximal degree in co-relation 10024. Up to 1325 conditions per place. [2024-06-14 11:23:02,659 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 257 selfloop transitions, 52 changer transitions 1/312 dead transitions. [2024-06-14 11:23:02,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 312 transitions, 4256 flow [2024-06-14 11:23:02,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:23:02,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:23:02,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-14 11:23:02,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325 [2024-06-14 11:23:02,660 INFO L175 Difference]: Start difference. First operand has 382 places, 297 transitions, 3544 flow. Second operand 10 states and 104 transitions. [2024-06-14 11:23:02,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 312 transitions, 4256 flow [2024-06-14 11:23:03,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 312 transitions, 4122 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-14 11:23:03,321 INFO L231 Difference]: Finished difference. Result has 384 places, 298 transitions, 3575 flow [2024-06-14 11:23:03,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3412, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3575, PETRI_PLACES=384, PETRI_TRANSITIONS=298} [2024-06-14 11:23:03,322 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 353 predicate places. [2024-06-14 11:23:03,322 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 298 transitions, 3575 flow [2024-06-14 11:23:03,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:03,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:23:03,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:23:03,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-14 11:23:03,322 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:23:03,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:23:03,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1155874588, now seen corresponding path program 3 times [2024-06-14 11:23:03,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:23:03,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424973679] [2024-06-14 11:23:03,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:23:03,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:23:03,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:23:04,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:23:04,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:23:04,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424973679] [2024-06-14 11:23:04,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424973679] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:23:04,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:23:04,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:23:04,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419456657] [2024-06-14 11:23:04,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:23:04,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:23:04,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:23:04,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:23:04,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:23:04,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:23:04,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 298 transitions, 3575 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:04,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:23:04,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:23:04,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:23:05,371 INFO L124 PetriNetUnfolderBase]: 817/1524 cut-off events. [2024-06-14 11:23:05,371 INFO L125 PetriNetUnfolderBase]: For 111604/111604 co-relation queries the response was YES. [2024-06-14 11:23:05,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9986 conditions, 1524 events. 817/1524 cut-off events. For 111604/111604 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 8819 event pairs, 146 based on Foata normal form. 1/1525 useless extension candidates. Maximal degree in co-relation 9814. Up to 1307 conditions per place. [2024-06-14 11:23:05,389 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 236 selfloop transitions, 72 changer transitions 2/312 dead transitions. [2024-06-14 11:23:05,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 312 transitions, 4259 flow [2024-06-14 11:23:05,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:23:05,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:23:05,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-14 11:23:05,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-14 11:23:05,390 INFO L175 Difference]: Start difference. First operand has 384 places, 298 transitions, 3575 flow. Second operand 10 states and 110 transitions. [2024-06-14 11:23:05,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 312 transitions, 4259 flow [2024-06-14 11:23:05,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 312 transitions, 4076 flow, removed 42 selfloop flow, removed 8 redundant places. [2024-06-14 11:23:05,974 INFO L231 Difference]: Finished difference. Result has 386 places, 298 transitions, 3548 flow [2024-06-14 11:23:05,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3392, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3548, PETRI_PLACES=386, PETRI_TRANSITIONS=298} [2024-06-14 11:23:05,974 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 355 predicate places. [2024-06-14 11:23:05,974 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 298 transitions, 3548 flow [2024-06-14 11:23:05,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:05,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:23:05,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:23:05,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-14 11:23:05,974 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:23:05,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:23:05,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1155868791, now seen corresponding path program 23 times [2024-06-14 11:23:05,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:23:05,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918088521] [2024-06-14 11:23:05,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:23:05,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:23:05,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:23:07,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:23:07,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:23:07,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918088521] [2024-06-14 11:23:07,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918088521] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:23:07,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:23:07,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:23:07,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102539708] [2024-06-14 11:23:07,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:23:07,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:23:07,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:23:07,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:23:07,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:23:07,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:23:07,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 298 transitions, 3548 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:07,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:23:07,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:23:07,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:23:07,863 INFO L124 PetriNetUnfolderBase]: 821/1532 cut-off events. [2024-06-14 11:23:07,863 INFO L125 PetriNetUnfolderBase]: For 116207/116207 co-relation queries the response was YES. [2024-06-14 11:23:07,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10035 conditions, 1532 events. 821/1532 cut-off events. For 116207/116207 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 8877 event pairs, 142 based on Foata normal form. 2/1534 useless extension candidates. Maximal degree in co-relation 9862. Up to 1278 conditions per place. [2024-06-14 11:23:07,882 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 243 selfloop transitions, 67 changer transitions 1/313 dead transitions. [2024-06-14 11:23:07,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 313 transitions, 4268 flow [2024-06-14 11:23:07,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:23:07,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:23:07,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-14 11:23:07,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-14 11:23:07,883 INFO L175 Difference]: Start difference. First operand has 386 places, 298 transitions, 3548 flow. Second operand 10 states and 108 transitions. [2024-06-14 11:23:07,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 313 transitions, 4268 flow [2024-06-14 11:23:08,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 313 transitions, 4060 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-14 11:23:08,562 INFO L231 Difference]: Finished difference. Result has 387 places, 299 transitions, 3532 flow [2024-06-14 11:23:08,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3340, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3532, PETRI_PLACES=387, PETRI_TRANSITIONS=299} [2024-06-14 11:23:08,563 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 356 predicate places. [2024-06-14 11:23:08,563 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 299 transitions, 3532 flow [2024-06-14 11:23:08,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:08,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:23:08,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:23:08,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-14 11:23:08,563 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:23:08,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:23:08,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1524009177, now seen corresponding path program 24 times [2024-06-14 11:23:08,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:23:08,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761379173] [2024-06-14 11:23:08,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:23:08,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:23:08,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:23:09,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:23:09,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:23:09,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761379173] [2024-06-14 11:23:09,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761379173] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:23:09,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:23:09,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:23:09,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296477838] [2024-06-14 11:23:09,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:23:09,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:23:09,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:23:09,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:23:09,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:23:09,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:23:09,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 299 transitions, 3532 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:09,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:23:09,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:23:09,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:23:10,185 INFO L124 PetriNetUnfolderBase]: 825/1540 cut-off events. [2024-06-14 11:23:10,185 INFO L125 PetriNetUnfolderBase]: For 117304/117304 co-relation queries the response was YES. [2024-06-14 11:23:10,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10116 conditions, 1540 events. 825/1540 cut-off events. For 117304/117304 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 8960 event pairs, 147 based on Foata normal form. 2/1542 useless extension candidates. Maximal degree in co-relation 9942. Up to 1351 conditions per place. [2024-06-14 11:23:10,204 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 273 selfloop transitions, 41 changer transitions 1/317 dead transitions. [2024-06-14 11:23:10,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 317 transitions, 4263 flow [2024-06-14 11:23:10,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:23:10,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:23:10,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-14 11:23:10,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-14 11:23:10,205 INFO L175 Difference]: Start difference. First operand has 387 places, 299 transitions, 3532 flow. Second operand 10 states and 105 transitions. [2024-06-14 11:23:10,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 317 transitions, 4263 flow [2024-06-14 11:23:10,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 317 transitions, 4081 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-14 11:23:10,775 INFO L231 Difference]: Finished difference. Result has 389 places, 300 transitions, 3492 flow [2024-06-14 11:23:10,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3352, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3492, PETRI_PLACES=389, PETRI_TRANSITIONS=300} [2024-06-14 11:23:10,776 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 358 predicate places. [2024-06-14 11:23:10,776 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 300 transitions, 3492 flow [2024-06-14 11:23:10,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:10,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:23:10,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:23:10,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-14 11:23:10,776 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:23:10,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:23:10,776 INFO L85 PathProgramCache]: Analyzing trace with hash -20338237, now seen corresponding path program 25 times [2024-06-14 11:23:10,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:23:10,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546736370] [2024-06-14 11:23:10,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:23:10,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:23:10,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:23:11,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:23:11,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:23:11,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546736370] [2024-06-14 11:23:11,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546736370] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:23:11,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:23:11,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:23:11,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406099505] [2024-06-14 11:23:11,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:23:11,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:23:11,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:23:11,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:23:11,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:23:11,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:23:11,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 300 transitions, 3492 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:11,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:23:11,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:23:11,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:23:12,330 INFO L124 PetriNetUnfolderBase]: 829/1548 cut-off events. [2024-06-14 11:23:12,331 INFO L125 PetriNetUnfolderBase]: For 117470/117470 co-relation queries the response was YES. [2024-06-14 11:23:12,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10093 conditions, 1548 events. 829/1548 cut-off events. For 117470/117470 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 9028 event pairs, 149 based on Foata normal form. 2/1550 useless extension candidates. Maximal degree in co-relation 9918. Up to 1373 conditions per place. [2024-06-14 11:23:12,350 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 268 selfloop transitions, 47 changer transitions 1/318 dead transitions. [2024-06-14 11:23:12,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 318 transitions, 4233 flow [2024-06-14 11:23:12,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:23:12,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:23:12,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-14 11:23:12,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-14 11:23:12,351 INFO L175 Difference]: Start difference. First operand has 389 places, 300 transitions, 3492 flow. Second operand 10 states and 106 transitions. [2024-06-14 11:23:12,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 318 transitions, 4233 flow [2024-06-14 11:23:13,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 318 transitions, 4103 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-14 11:23:13,006 INFO L231 Difference]: Finished difference. Result has 391 places, 301 transitions, 3516 flow [2024-06-14 11:23:13,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3364, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3516, PETRI_PLACES=391, PETRI_TRANSITIONS=301} [2024-06-14 11:23:13,007 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 360 predicate places. [2024-06-14 11:23:13,007 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 301 transitions, 3516 flow [2024-06-14 11:23:13,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:13,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:23:13,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:23:13,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-14 11:23:13,007 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:23:13,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:23:13,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1527728247, now seen corresponding path program 26 times [2024-06-14 11:23:13,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:23:13,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487336713] [2024-06-14 11:23:13,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:23:13,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:23:13,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:23:14,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:23:14,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:23:14,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487336713] [2024-06-14 11:23:14,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487336713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:23:14,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:23:14,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:23:14,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031013102] [2024-06-14 11:23:14,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:23:14,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:23:14,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:23:14,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:23:14,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:23:14,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:23:14,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 301 transitions, 3516 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:14,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:23:14,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:23:14,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:23:14,949 INFO L124 PetriNetUnfolderBase]: 833/1556 cut-off events. [2024-06-14 11:23:14,949 INFO L125 PetriNetUnfolderBase]: For 117391/117391 co-relation queries the response was YES. [2024-06-14 11:23:14,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10142 conditions, 1556 events. 833/1556 cut-off events. For 117391/117391 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 9103 event pairs, 149 based on Foata normal form. 2/1558 useless extension candidates. Maximal degree in co-relation 9966. Up to 1375 conditions per place. [2024-06-14 11:23:14,967 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 263 selfloop transitions, 53 changer transitions 1/319 dead transitions. [2024-06-14 11:23:14,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 319 transitions, 4267 flow [2024-06-14 11:23:14,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:23:14,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:23:14,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-14 11:23:14,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-14 11:23:14,968 INFO L175 Difference]: Start difference. First operand has 391 places, 301 transitions, 3516 flow. Second operand 10 states and 107 transitions. [2024-06-14 11:23:14,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 319 transitions, 4267 flow [2024-06-14 11:23:15,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 319 transitions, 4125 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-14 11:23:15,504 INFO L231 Difference]: Finished difference. Result has 393 places, 302 transitions, 3540 flow [2024-06-14 11:23:15,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3376, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3540, PETRI_PLACES=393, PETRI_TRANSITIONS=302} [2024-06-14 11:23:15,504 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 362 predicate places. [2024-06-14 11:23:15,504 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 302 transitions, 3540 flow [2024-06-14 11:23:15,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:15,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:23:15,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:23:15,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-14 11:23:15,505 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:23:15,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:23:15,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1527734044, now seen corresponding path program 4 times [2024-06-14 11:23:15,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:23:15,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688658367] [2024-06-14 11:23:15,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:23:15,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:23:15,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:23:17,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:23:17,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:23:17,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688658367] [2024-06-14 11:23:17,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688658367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:23:17,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:23:17,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:23:17,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728231417] [2024-06-14 11:23:17,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:23:17,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:23:17,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:23:17,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:23:17,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:23:17,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:23:17,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 302 transitions, 3540 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:17,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:23:17,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:23:17,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:23:18,098 INFO L124 PetriNetUnfolderBase]: 831/1553 cut-off events. [2024-06-14 11:23:18,098 INFO L125 PetriNetUnfolderBase]: For 105768/105768 co-relation queries the response was YES. [2024-06-14 11:23:18,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9925 conditions, 1553 events. 831/1553 cut-off events. For 105768/105768 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 9091 event pairs, 151 based on Foata normal form. 1/1554 useless extension candidates. Maximal degree in co-relation 9748. Up to 1368 conditions per place. [2024-06-14 11:23:18,117 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 254 selfloop transitions, 62 changer transitions 1/319 dead transitions. [2024-06-14 11:23:18,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 319 transitions, 4255 flow [2024-06-14 11:23:18,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:23:18,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:23:18,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-14 11:23:18,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-14 11:23:18,118 INFO L175 Difference]: Start difference. First operand has 393 places, 302 transitions, 3540 flow. Second operand 10 states and 109 transitions. [2024-06-14 11:23:18,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 319 transitions, 4255 flow [2024-06-14 11:23:18,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 319 transitions, 4101 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-14 11:23:18,688 INFO L231 Difference]: Finished difference. Result has 395 places, 302 transitions, 3521 flow [2024-06-14 11:23:18,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3386, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3521, PETRI_PLACES=395, PETRI_TRANSITIONS=302} [2024-06-14 11:23:18,688 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 364 predicate places. [2024-06-14 11:23:18,688 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 302 transitions, 3521 flow [2024-06-14 11:23:18,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:18,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:23:18,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:23:18,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-14 11:23:18,689 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:23:18,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:23:18,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1527733827, now seen corresponding path program 27 times [2024-06-14 11:23:18,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:23:18,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457846879] [2024-06-14 11:23:18,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:23:18,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:23:18,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:23:20,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:23:20,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:23:20,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457846879] [2024-06-14 11:23:20,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457846879] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:23:20,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:23:20,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:23:20,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114210105] [2024-06-14 11:23:20,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:23:20,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:23:20,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:23:20,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:23:20,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:23:20,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:23:20,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 302 transitions, 3521 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:20,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:23:20,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:23:20,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:23:20,659 INFO L124 PetriNetUnfolderBase]: 835/1561 cut-off events. [2024-06-14 11:23:20,659 INFO L125 PetriNetUnfolderBase]: For 110824/110824 co-relation queries the response was YES. [2024-06-14 11:23:20,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9974 conditions, 1561 events. 835/1561 cut-off events. For 110824/110824 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 9174 event pairs, 151 based on Foata normal form. 2/1563 useless extension candidates. Maximal degree in co-relation 9796. Up to 1370 conditions per place. [2024-06-14 11:23:20,677 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 259 selfloop transitions, 58 changer transitions 1/320 dead transitions. [2024-06-14 11:23:20,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 320 transitions, 4280 flow [2024-06-14 11:23:20,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:23:20,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:23:20,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-14 11:23:20,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-14 11:23:20,678 INFO L175 Difference]: Start difference. First operand has 395 places, 302 transitions, 3521 flow. Second operand 10 states and 108 transitions. [2024-06-14 11:23:20,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 320 transitions, 4280 flow [2024-06-14 11:23:21,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 320 transitions, 3808 flow, removed 34 selfloop flow, removed 15 redundant places. [2024-06-14 11:23:21,257 INFO L231 Difference]: Finished difference. Result has 390 places, 303 transitions, 3225 flow [2024-06-14 11:23:21,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3049, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3225, PETRI_PLACES=390, PETRI_TRANSITIONS=303} [2024-06-14 11:23:21,258 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 359 predicate places. [2024-06-14 11:23:21,258 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 303 transitions, 3225 flow [2024-06-14 11:23:21,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:21,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:23:21,258 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:23:21,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-14 11:23:21,258 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:23:21,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:23:21,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1671834103, now seen corresponding path program 7 times [2024-06-14 11:23:21,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:23:21,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656268191] [2024-06-14 11:23:21,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:23:21,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:23:21,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:23:22,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:23:22,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:23:22,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656268191] [2024-06-14 11:23:22,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656268191] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:23:22,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:23:22,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:23:22,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019730624] [2024-06-14 11:23:22,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:23:22,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:23:22,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:23:22,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:23:22,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:23:23,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:23:23,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 303 transitions, 3225 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:23,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:23:23,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:23:23,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:23:23,764 INFO L124 PetriNetUnfolderBase]: 855/1607 cut-off events. [2024-06-14 11:23:23,764 INFO L125 PetriNetUnfolderBase]: For 150913/150913 co-relation queries the response was YES. [2024-06-14 11:23:23,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9766 conditions, 1607 events. 855/1607 cut-off events. For 150913/150913 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 9516 event pairs, 160 based on Foata normal form. 10/1617 useless extension candidates. Maximal degree in co-relation 9593. Up to 1390 conditions per place. [2024-06-14 11:23:23,783 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 270 selfloop transitions, 46 changer transitions 10/328 dead transitions. [2024-06-14 11:23:23,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 328 transitions, 4078 flow [2024-06-14 11:23:23,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:23:23,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:23:23,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-14 11:23:23,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-14 11:23:23,784 INFO L175 Difference]: Start difference. First operand has 390 places, 303 transitions, 3225 flow. Second operand 11 states and 120 transitions. [2024-06-14 11:23:23,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 328 transitions, 4078 flow [2024-06-14 11:23:24,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 328 transitions, 3870 flow, removed 48 selfloop flow, removed 8 redundant places. [2024-06-14 11:23:24,343 INFO L231 Difference]: Finished difference. Result has 393 places, 302 transitions, 3146 flow [2024-06-14 11:23:24,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3065, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3146, PETRI_PLACES=393, PETRI_TRANSITIONS=302} [2024-06-14 11:23:24,343 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 362 predicate places. [2024-06-14 11:23:24,343 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 302 transitions, 3146 flow [2024-06-14 11:23:24,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:24,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:23:24,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:23:24,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-14 11:23:24,344 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:23:24,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:23:24,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1770425435, now seen corresponding path program 28 times [2024-06-14 11:23:24,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:23:24,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270252097] [2024-06-14 11:23:24,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:23:24,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:23:24,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:23:25,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:23:25,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:23:25,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270252097] [2024-06-14 11:23:25,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270252097] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:23:25,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:23:25,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:23:25,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877070821] [2024-06-14 11:23:25,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:23:25,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:23:25,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:23:25,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:23:25,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:23:25,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:23:25,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 302 transitions, 3146 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:25,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:23:25,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:23:25,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:23:26,227 INFO L124 PetriNetUnfolderBase]: 833/1565 cut-off events. [2024-06-14 11:23:26,228 INFO L125 PetriNetUnfolderBase]: For 109799/109799 co-relation queries the response was YES. [2024-06-14 11:23:26,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9432 conditions, 1565 events. 833/1565 cut-off events. For 109799/109799 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 9219 event pairs, 140 based on Foata normal form. 2/1567 useless extension candidates. Maximal degree in co-relation 9258. Up to 1377 conditions per place. [2024-06-14 11:23:26,246 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 267 selfloop transitions, 48 changer transitions 1/318 dead transitions. [2024-06-14 11:23:26,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 318 transitions, 3894 flow [2024-06-14 11:23:26,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:23:26,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:23:26,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-14 11:23:26,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-14 11:23:26,247 INFO L175 Difference]: Start difference. First operand has 393 places, 302 transitions, 3146 flow. Second operand 10 states and 105 transitions. [2024-06-14 11:23:26,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 318 transitions, 3894 flow [2024-06-14 11:23:26,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 318 transitions, 3792 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-14 11:23:26,793 INFO L231 Difference]: Finished difference. Result has 393 places, 303 transitions, 3196 flow [2024-06-14 11:23:26,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3044, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3196, PETRI_PLACES=393, PETRI_TRANSITIONS=303} [2024-06-14 11:23:26,793 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 362 predicate places. [2024-06-14 11:23:26,794 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 303 transitions, 3196 flow [2024-06-14 11:23:26,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:26,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:23:26,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:23:26,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-14 11:23:26,794 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:23:26,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:23:26,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1770431015, now seen corresponding path program 29 times [2024-06-14 11:23:26,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:23:26,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472939826] [2024-06-14 11:23:26,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:23:26,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:23:26,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:23:27,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:23:27,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:23:27,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472939826] [2024-06-14 11:23:27,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472939826] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:23:27,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:23:27,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:23:27,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670670388] [2024-06-14 11:23:27,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:23:27,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:23:27,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:23:27,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:23:27,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:23:28,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:23:28,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 303 transitions, 3196 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:28,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:23:28,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:23:28,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:23:28,634 INFO L124 PetriNetUnfolderBase]: 837/1573 cut-off events. [2024-06-14 11:23:28,634 INFO L125 PetriNetUnfolderBase]: For 111187/111187 co-relation queries the response was YES. [2024-06-14 11:23:28,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9557 conditions, 1573 events. 837/1573 cut-off events. For 111187/111187 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 9283 event pairs, 138 based on Foata normal form. 2/1575 useless extension candidates. Maximal degree in co-relation 9382. Up to 1371 conditions per place. [2024-06-14 11:23:28,654 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 267 selfloop transitions, 49 changer transitions 1/319 dead transitions. [2024-06-14 11:23:28,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 319 transitions, 3940 flow [2024-06-14 11:23:28,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:23:28,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:23:28,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-14 11:23:28,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325 [2024-06-14 11:23:28,655 INFO L175 Difference]: Start difference. First operand has 393 places, 303 transitions, 3196 flow. Second operand 10 states and 104 transitions. [2024-06-14 11:23:28,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 319 transitions, 3940 flow [2024-06-14 11:23:29,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 319 transitions, 3792 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-14 11:23:29,229 INFO L231 Difference]: Finished difference. Result has 394 places, 304 transitions, 3206 flow [2024-06-14 11:23:29,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3048, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3206, PETRI_PLACES=394, PETRI_TRANSITIONS=304} [2024-06-14 11:23:29,229 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 363 predicate places. [2024-06-14 11:23:29,229 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 304 transitions, 3206 flow [2024-06-14 11:23:29,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:29,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:23:29,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:23:29,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-14 11:23:29,229 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:23:29,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:23:29,230 INFO L85 PathProgramCache]: Analyzing trace with hash 976469797, now seen corresponding path program 30 times [2024-06-14 11:23:29,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:23:29,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692200574] [2024-06-14 11:23:29,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:23:29,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:23:29,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:23:30,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:23:30,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:23:30,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692200574] [2024-06-14 11:23:30,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692200574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:23:30,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:23:30,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:23:30,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226237582] [2024-06-14 11:23:30,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:23:30,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:23:30,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:23:30,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:23:30,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:23:30,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:23:30,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 304 transitions, 3206 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:30,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:23:30,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:23:30,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:23:31,049 INFO L124 PetriNetUnfolderBase]: 841/1581 cut-off events. [2024-06-14 11:23:31,049 INFO L125 PetriNetUnfolderBase]: For 111591/111591 co-relation queries the response was YES. [2024-06-14 11:23:31,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9599 conditions, 1581 events. 841/1581 cut-off events. For 111591/111591 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 9380 event pairs, 134 based on Foata normal form. 2/1583 useless extension candidates. Maximal degree in co-relation 9424. Up to 1379 conditions per place. [2024-06-14 11:23:31,066 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 269 selfloop transitions, 48 changer transitions 1/320 dead transitions. [2024-06-14 11:23:31,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 320 transitions, 3946 flow [2024-06-14 11:23:31,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:23:31,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:23:31,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-14 11:23:31,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.321875 [2024-06-14 11:23:31,067 INFO L175 Difference]: Start difference. First operand has 394 places, 304 transitions, 3206 flow. Second operand 10 states and 103 transitions. [2024-06-14 11:23:31,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 320 transitions, 3946 flow [2024-06-14 11:23:31,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 320 transitions, 3798 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-14 11:23:31,670 INFO L231 Difference]: Finished difference. Result has 396 places, 305 transitions, 3216 flow [2024-06-14 11:23:31,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3060, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3216, PETRI_PLACES=396, PETRI_TRANSITIONS=305} [2024-06-14 11:23:31,670 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 365 predicate places. [2024-06-14 11:23:31,670 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 305 transitions, 3216 flow [2024-06-14 11:23:31,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:31,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:23:31,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:23:31,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-14 11:23:31,670 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:23:31,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:23:31,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1183272967, now seen corresponding path program 31 times [2024-06-14 11:23:31,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:23:31,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031472295] [2024-06-14 11:23:31,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:23:31,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:23:31,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:23:33,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:23:33,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:23:33,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031472295] [2024-06-14 11:23:33,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031472295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:23:33,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:23:33,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:23:33,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259804596] [2024-06-14 11:23:33,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:23:33,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:23:33,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:23:33,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:23:33,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:23:33,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:23:33,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 305 transitions, 3216 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:33,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:23:33,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:23:33,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:23:34,449 INFO L124 PetriNetUnfolderBase]: 845/1589 cut-off events. [2024-06-14 11:23:34,450 INFO L125 PetriNetUnfolderBase]: For 111779/111779 co-relation queries the response was YES. [2024-06-14 11:23:34,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9636 conditions, 1589 events. 845/1589 cut-off events. For 111779/111779 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 9429 event pairs, 134 based on Foata normal form. 2/1591 useless extension candidates. Maximal degree in co-relation 9460. Up to 1281 conditions per place. [2024-06-14 11:23:34,469 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 247 selfloop transitions, 71 changer transitions 1/321 dead transitions. [2024-06-14 11:23:34,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 321 transitions, 3974 flow [2024-06-14 11:23:34,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:23:34,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:23:34,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-14 11:23:34,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-14 11:23:34,470 INFO L175 Difference]: Start difference. First operand has 396 places, 305 transitions, 3216 flow. Second operand 10 states and 107 transitions. [2024-06-14 11:23:34,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 321 transitions, 3974 flow [2024-06-14 11:23:35,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 321 transitions, 3828 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-14 11:23:35,070 INFO L231 Difference]: Finished difference. Result has 398 places, 306 transitions, 3272 flow [2024-06-14 11:23:35,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3072, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3272, PETRI_PLACES=398, PETRI_TRANSITIONS=306} [2024-06-14 11:23:35,070 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 367 predicate places. [2024-06-14 11:23:35,071 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 306 transitions, 3272 flow [2024-06-14 11:23:35,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:35,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:23:35,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:23:35,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-14 11:23:35,071 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:23:35,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:23:35,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1563764059, now seen corresponding path program 8 times [2024-06-14 11:23:35,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:23:35,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42837580] [2024-06-14 11:23:35,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:23:35,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:23:35,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:23:36,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:23:36,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:23:36,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42837580] [2024-06-14 11:23:36,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42837580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:23:36,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:23:36,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:23:36,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326552281] [2024-06-14 11:23:36,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:23:36,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:23:36,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:23:36,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:23:36,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:23:36,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:23:36,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 306 transitions, 3272 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:36,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:23:36,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:23:36,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:23:37,276 INFO L124 PetriNetUnfolderBase]: 861/1625 cut-off events. [2024-06-14 11:23:37,276 INFO L125 PetriNetUnfolderBase]: For 150607/150607 co-relation queries the response was YES. [2024-06-14 11:23:37,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9781 conditions, 1625 events. 861/1625 cut-off events. For 150607/150607 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 9696 event pairs, 140 based on Foata normal form. 10/1635 useless extension candidates. Maximal degree in co-relation 9604. Up to 1223 conditions per place. [2024-06-14 11:23:37,296 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 239 selfloop transitions, 72 changer transitions 12/325 dead transitions. [2024-06-14 11:23:37,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 325 transitions, 4040 flow [2024-06-14 11:23:37,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:23:37,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:23:37,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-14 11:23:37,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-14 11:23:37,297 INFO L175 Difference]: Start difference. First operand has 398 places, 306 transitions, 3272 flow. Second operand 10 states and 113 transitions. [2024-06-14 11:23:37,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 325 transitions, 4040 flow [2024-06-14 11:23:37,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 325 transitions, 3850 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-14 11:23:37,947 INFO L231 Difference]: Finished difference. Result has 400 places, 299 transitions, 3178 flow [2024-06-14 11:23:37,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3082, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3178, PETRI_PLACES=400, PETRI_TRANSITIONS=299} [2024-06-14 11:23:37,948 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 369 predicate places. [2024-06-14 11:23:37,948 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 299 transitions, 3178 flow [2024-06-14 11:23:37,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:37,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:23:37,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:23:37,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-14 11:23:37,948 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:23:37,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:23:37,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1764853309, now seen corresponding path program 9 times [2024-06-14 11:23:37,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:23:37,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210470920] [2024-06-14 11:23:37,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:23:37,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:23:37,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:23:39,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:23:39,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:23:39,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210470920] [2024-06-14 11:23:39,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210470920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:23:39,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:23:39,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:23:39,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972284264] [2024-06-14 11:23:39,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:23:39,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:23:39,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:23:39,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:23:39,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:23:39,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:23:39,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 299 transitions, 3178 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:39,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:23:39,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:23:39,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:23:40,094 INFO L124 PetriNetUnfolderBase]: 841/1597 cut-off events. [2024-06-14 11:23:40,094 INFO L125 PetriNetUnfolderBase]: For 151178/151178 co-relation queries the response was YES. [2024-06-14 11:23:40,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9572 conditions, 1597 events. 841/1597 cut-off events. For 151178/151178 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 9537 event pairs, 146 based on Foata normal form. 10/1607 useless extension candidates. Maximal degree in co-relation 9394. Up to 1359 conditions per place. [2024-06-14 11:23:40,109 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 261 selfloop transitions, 47 changer transitions 10/320 dead transitions. [2024-06-14 11:23:40,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 320 transitions, 3948 flow [2024-06-14 11:23:40,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:23:40,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:23:40,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-14 11:23:40,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3352272727272727 [2024-06-14 11:23:40,110 INFO L175 Difference]: Start difference. First operand has 400 places, 299 transitions, 3178 flow. Second operand 11 states and 118 transitions. [2024-06-14 11:23:40,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 320 transitions, 3948 flow [2024-06-14 11:23:40,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 320 transitions, 3763 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-06-14 11:23:40,727 INFO L231 Difference]: Finished difference. Result has 396 places, 296 transitions, 3071 flow [2024-06-14 11:23:40,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2993, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3071, PETRI_PLACES=396, PETRI_TRANSITIONS=296} [2024-06-14 11:23:40,727 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 365 predicate places. [2024-06-14 11:23:40,727 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 296 transitions, 3071 flow [2024-06-14 11:23:40,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:40,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:23:40,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:23:40,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-14 11:23:40,728 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:23:40,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:23:40,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1563495289, now seen corresponding path program 10 times [2024-06-14 11:23:40,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:23:40,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157317791] [2024-06-14 11:23:40,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:23:40,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:23:40,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:23:42,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:23:42,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:23:42,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157317791] [2024-06-14 11:23:42,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157317791] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:23:42,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:23:42,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:23:42,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777084712] [2024-06-14 11:23:42,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:23:42,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:23:42,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:23:42,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:23:42,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:23:42,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:23:42,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 296 transitions, 3071 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:42,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:23:42,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:23:42,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:23:42,879 INFO L124 PetriNetUnfolderBase]: 856/1634 cut-off events. [2024-06-14 11:23:42,879 INFO L125 PetriNetUnfolderBase]: For 184537/184537 co-relation queries the response was YES. [2024-06-14 11:23:42,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10584 conditions, 1634 events. 856/1634 cut-off events. For 184537/184537 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 9752 event pairs, 147 based on Foata normal form. 8/1642 useless extension candidates. Maximal degree in co-relation 10408. Up to 1165 conditions per place. [2024-06-14 11:23:42,896 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 241 selfloop transitions, 66 changer transitions 12/321 dead transitions. [2024-06-14 11:23:42,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 321 transitions, 4083 flow [2024-06-14 11:23:42,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:23:42,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:23:42,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-14 11:23:42,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-14 11:23:42,896 INFO L175 Difference]: Start difference. First operand has 396 places, 296 transitions, 3071 flow. Second operand 11 states and 122 transitions. [2024-06-14 11:23:42,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 321 transitions, 4083 flow [2024-06-14 11:23:43,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 321 transitions, 3968 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-14 11:23:43,646 INFO L231 Difference]: Finished difference. Result has 393 places, 290 transitions, 3041 flow [2024-06-14 11:23:43,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2960, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3041, PETRI_PLACES=393, PETRI_TRANSITIONS=290} [2024-06-14 11:23:43,646 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 362 predicate places. [2024-06-14 11:23:43,646 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 290 transitions, 3041 flow [2024-06-14 11:23:43,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:43,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:23:43,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:23:43,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-14 11:23:43,647 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:23:43,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:23:43,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1133013447, now seen corresponding path program 32 times [2024-06-14 11:23:43,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:23:43,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234395341] [2024-06-14 11:23:43,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:23:43,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:23:43,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:23:44,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:23:44,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:23:44,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234395341] [2024-06-14 11:23:44,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234395341] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:23:44,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:23:44,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:23:44,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615378200] [2024-06-14 11:23:44,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:23:44,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:23:44,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:23:44,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:23:44,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:23:44,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:23:44,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 290 transitions, 3041 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:44,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:23:44,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:23:44,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:23:45,456 INFO L124 PetriNetUnfolderBase]: 814/1548 cut-off events. [2024-06-14 11:23:45,456 INFO L125 PetriNetUnfolderBase]: For 154271/154271 co-relation queries the response was YES. [2024-06-14 11:23:45,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10257 conditions, 1548 events. 814/1548 cut-off events. For 154271/154271 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 9129 event pairs, 151 based on Foata normal form. 2/1550 useless extension candidates. Maximal degree in co-relation 10082. Up to 1291 conditions per place. [2024-06-14 11:23:45,472 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 240 selfloop transitions, 63 changer transitions 1/306 dead transitions. [2024-06-14 11:23:45,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 306 transitions, 3769 flow [2024-06-14 11:23:45,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:23:45,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:23:45,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-14 11:23:45,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-14 11:23:45,473 INFO L175 Difference]: Start difference. First operand has 393 places, 290 transitions, 3041 flow. Second operand 10 states and 106 transitions. [2024-06-14 11:23:45,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 306 transitions, 3769 flow [2024-06-14 11:23:46,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 306 transitions, 3589 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-14 11:23:46,188 INFO L231 Difference]: Finished difference. Result has 386 places, 291 transitions, 3049 flow [2024-06-14 11:23:46,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2861, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3049, PETRI_PLACES=386, PETRI_TRANSITIONS=291} [2024-06-14 11:23:46,188 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 355 predicate places. [2024-06-14 11:23:46,188 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 291 transitions, 3049 flow [2024-06-14 11:23:46,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:46,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:23:46,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:23:46,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-14 11:23:46,188 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:23:46,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:23:46,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1175915737, now seen corresponding path program 33 times [2024-06-14 11:23:46,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:23:46,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890505516] [2024-06-14 11:23:46,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:23:46,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:23:46,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:23:47,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:23:47,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:23:47,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890505516] [2024-06-14 11:23:47,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890505516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:23:47,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:23:47,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:23:47,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676240265] [2024-06-14 11:23:47,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:23:47,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:23:47,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:23:47,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:23:47,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:23:47,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:23:47,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 291 transitions, 3049 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:47,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:23:47,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:23:47,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:23:48,066 INFO L124 PetriNetUnfolderBase]: 818/1556 cut-off events. [2024-06-14 11:23:48,066 INFO L125 PetriNetUnfolderBase]: For 149940/149940 co-relation queries the response was YES. [2024-06-14 11:23:48,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10252 conditions, 1556 events. 818/1556 cut-off events. For 149940/149940 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 9209 event pairs, 149 based on Foata normal form. 2/1558 useless extension candidates. Maximal degree in co-relation 10080. Up to 1299 conditions per place. [2024-06-14 11:23:48,081 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 242 selfloop transitions, 62 changer transitions 1/307 dead transitions. [2024-06-14 11:23:48,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 307 transitions, 3773 flow [2024-06-14 11:23:48,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:23:48,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:23:48,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-14 11:23:48,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-14 11:23:48,082 INFO L175 Difference]: Start difference. First operand has 386 places, 291 transitions, 3049 flow. Second operand 10 states and 105 transitions. [2024-06-14 11:23:48,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 307 transitions, 3773 flow [2024-06-14 11:23:48,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 307 transitions, 3595 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-14 11:23:48,804 INFO L231 Difference]: Finished difference. Result has 388 places, 292 transitions, 3059 flow [2024-06-14 11:23:48,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2873, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3059, PETRI_PLACES=388, PETRI_TRANSITIONS=292} [2024-06-14 11:23:48,808 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 357 predicate places. [2024-06-14 11:23:48,808 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 292 transitions, 3059 flow [2024-06-14 11:23:48,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:48,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:23:48,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:23:48,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-14 11:23:48,809 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:23:48,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:23:48,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1570913899, now seen corresponding path program 11 times [2024-06-14 11:23:48,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:23:48,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103071233] [2024-06-14 11:23:48,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:23:48,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:23:48,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:23:50,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:23:50,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:23:50,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103071233] [2024-06-14 11:23:50,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103071233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:23:50,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:23:50,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:23:50,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600728989] [2024-06-14 11:23:50,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:23:50,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:23:50,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:23:50,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:23:50,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:23:50,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:23:50,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 292 transitions, 3059 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:50,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:23:50,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:23:50,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:23:51,210 INFO L124 PetriNetUnfolderBase]: 854/1630 cut-off events. [2024-06-14 11:23:51,211 INFO L125 PetriNetUnfolderBase]: For 204024/204024 co-relation queries the response was YES. [2024-06-14 11:23:51,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10313 conditions, 1630 events. 854/1630 cut-off events. For 204024/204024 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 9746 event pairs, 173 based on Foata normal form. 16/1646 useless extension candidates. Maximal degree in co-relation 10140. Up to 1380 conditions per place. [2024-06-14 11:23:51,231 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 264 selfloop transitions, 43 changer transitions 17/326 dead transitions. [2024-06-14 11:23:51,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 326 transitions, 3975 flow [2024-06-14 11:23:51,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:23:51,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:23:51,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-14 11:23:51,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-14 11:23:51,232 INFO L175 Difference]: Start difference. First operand has 388 places, 292 transitions, 3059 flow. Second operand 12 states and 126 transitions. [2024-06-14 11:23:51,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 326 transitions, 3975 flow [2024-06-14 11:23:51,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 326 transitions, 3785 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-14 11:23:51,990 INFO L231 Difference]: Finished difference. Result has 397 places, 301 transitions, 3112 flow [2024-06-14 11:23:51,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2885, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3112, PETRI_PLACES=397, PETRI_TRANSITIONS=301} [2024-06-14 11:23:51,990 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 366 predicate places. [2024-06-14 11:23:51,990 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 301 transitions, 3112 flow [2024-06-14 11:23:51,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:51,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:23:51,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:23:51,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-14 11:23:51,991 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:23:51,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:23:51,991 INFO L85 PathProgramCache]: Analyzing trace with hash 908133545, now seen corresponding path program 34 times [2024-06-14 11:23:51,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:23:51,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215929327] [2024-06-14 11:23:51,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:23:51,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:23:52,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:23:53,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:23:53,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:23:53,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215929327] [2024-06-14 11:23:53,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215929327] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:23:53,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:23:53,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:23:53,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464669494] [2024-06-14 11:23:53,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:23:53,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:23:53,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:23:53,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:23:53,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:23:53,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:23:53,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 301 transitions, 3112 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:53,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:23:53,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:23:53,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:23:53,860 INFO L124 PetriNetUnfolderBase]: 816/1552 cut-off events. [2024-06-14 11:23:53,860 INFO L125 PetriNetUnfolderBase]: For 139103/139103 co-relation queries the response was YES. [2024-06-14 11:23:53,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10116 conditions, 1552 events. 816/1552 cut-off events. For 139103/139103 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 9166 event pairs, 159 based on Foata normal form. 2/1554 useless extension candidates. Maximal degree in co-relation 9937. Up to 1344 conditions per place. [2024-06-14 11:23:53,880 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 258 selfloop transitions, 54 changer transitions 1/315 dead transitions. [2024-06-14 11:23:53,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 315 transitions, 3858 flow [2024-06-14 11:23:53,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:23:53,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:23:53,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-14 11:23:53,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.321875 [2024-06-14 11:23:53,880 INFO L175 Difference]: Start difference. First operand has 397 places, 301 transitions, 3112 flow. Second operand 10 states and 103 transitions. [2024-06-14 11:23:53,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 315 transitions, 3858 flow [2024-06-14 11:23:54,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 315 transitions, 3781 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-14 11:23:54,552 INFO L231 Difference]: Finished difference. Result has 397 places, 302 transitions, 3204 flow [2024-06-14 11:23:54,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3035, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3204, PETRI_PLACES=397, PETRI_TRANSITIONS=302} [2024-06-14 11:23:54,553 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 366 predicate places. [2024-06-14 11:23:54,553 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 302 transitions, 3204 flow [2024-06-14 11:23:54,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:54,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:23:54,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:23:54,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-14 11:23:54,553 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:23:54,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:23:54,554 INFO L85 PathProgramCache]: Analyzing trace with hash 908127965, now seen corresponding path program 35 times [2024-06-14 11:23:54,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:23:54,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470932729] [2024-06-14 11:23:54,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:23:54,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:23:54,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:23:55,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:23:55,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:23:55,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470932729] [2024-06-14 11:23:55,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470932729] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:23:55,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:23:55,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:23:55,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838342142] [2024-06-14 11:23:55,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:23:55,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:23:55,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:23:55,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:23:55,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:23:55,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:23:55,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 302 transitions, 3204 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:55,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:23:55,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:23:55,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:23:56,349 INFO L124 PetriNetUnfolderBase]: 820/1560 cut-off events. [2024-06-14 11:23:56,350 INFO L125 PetriNetUnfolderBase]: For 141061/141061 co-relation queries the response was YES. [2024-06-14 11:23:56,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10245 conditions, 1560 events. 820/1560 cut-off events. For 141061/141061 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 9226 event pairs, 157 based on Foata normal form. 2/1562 useless extension candidates. Maximal degree in co-relation 10069. Up to 1355 conditions per place. [2024-06-14 11:23:56,368 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 262 selfloop transitions, 51 changer transitions 1/316 dead transitions. [2024-06-14 11:23:56,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 316 transitions, 3952 flow [2024-06-14 11:23:56,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:23:56,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:23:56,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-14 11:23:56,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31875 [2024-06-14 11:23:56,369 INFO L175 Difference]: Start difference. First operand has 397 places, 302 transitions, 3204 flow. Second operand 10 states and 102 transitions. [2024-06-14 11:23:56,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 316 transitions, 3952 flow [2024-06-14 11:23:57,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 316 transitions, 3795 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-14 11:23:57,063 INFO L231 Difference]: Finished difference. Result has 399 places, 303 transitions, 3211 flow [2024-06-14 11:23:57,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3047, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3211, PETRI_PLACES=399, PETRI_TRANSITIONS=303} [2024-06-14 11:23:57,064 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 368 predicate places. [2024-06-14 11:23:57,064 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 303 transitions, 3211 flow [2024-06-14 11:23:57,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:57,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:23:57,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:23:57,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-14 11:23:57,064 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:23:57,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:23:57,064 INFO L85 PathProgramCache]: Analyzing trace with hash -604151367, now seen corresponding path program 36 times [2024-06-14 11:23:57,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:23:57,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292180681] [2024-06-14 11:23:57,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:23:57,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:23:57,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:23:58,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:23:58,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:23:58,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292180681] [2024-06-14 11:23:58,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292180681] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:23:58,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:23:58,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:23:58,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321735228] [2024-06-14 11:23:58,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:23:58,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:23:58,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:23:58,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:23:58,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:23:58,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:23:58,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 303 transitions, 3211 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:58,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:23:58,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:23:58,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:23:58,786 INFO L124 PetriNetUnfolderBase]: 824/1568 cut-off events. [2024-06-14 11:23:58,786 INFO L125 PetriNetUnfolderBase]: For 142899/142899 co-relation queries the response was YES. [2024-06-14 11:23:58,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10304 conditions, 1568 events. 824/1568 cut-off events. For 142899/142899 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 9308 event pairs, 278 based on Foata normal form. 2/1570 useless extension candidates. Maximal degree in co-relation 10127. Up to 1449 conditions per place. [2024-06-14 11:23:58,804 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 277 selfloop transitions, 39 changer transitions 0/318 dead transitions. [2024-06-14 11:23:58,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 318 transitions, 3979 flow [2024-06-14 11:23:58,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:23:58,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:23:58,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-14 11:23:58,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-14 11:23:58,805 INFO L175 Difference]: Start difference. First operand has 399 places, 303 transitions, 3211 flow. Second operand 10 states and 109 transitions. [2024-06-14 11:23:58,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 318 transitions, 3979 flow [2024-06-14 11:23:59,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 318 transitions, 3825 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-14 11:23:59,522 INFO L231 Difference]: Finished difference. Result has 401 places, 304 transitions, 3199 flow [2024-06-14 11:23:59,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3057, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3199, PETRI_PLACES=401, PETRI_TRANSITIONS=304} [2024-06-14 11:23:59,522 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 370 predicate places. [2024-06-14 11:23:59,522 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 304 transitions, 3199 flow [2024-06-14 11:23:59,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:59,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:23:59,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:23:59,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-14 11:23:59,523 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:23:59,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:23:59,523 INFO L85 PathProgramCache]: Analyzing trace with hash -604143431, now seen corresponding path program 12 times [2024-06-14 11:23:59,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:23:59,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784818864] [2024-06-14 11:23:59,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:23:59,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:23:59,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:24:00,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:24:00,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:24:00,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784818864] [2024-06-14 11:24:00,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784818864] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:24:00,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:24:00,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:24:00,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101061993] [2024-06-14 11:24:00,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:24:00,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:24:00,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:24:00,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:24:00,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:24:00,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:24:00,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 304 transitions, 3199 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:00,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:24:00,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:24:00,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:24:01,383 INFO L124 PetriNetUnfolderBase]: 840/1604 cut-off events. [2024-06-14 11:24:01,384 INFO L125 PetriNetUnfolderBase]: For 184058/184058 co-relation queries the response was YES. [2024-06-14 11:24:01,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10380 conditions, 1604 events. 840/1604 cut-off events. For 184058/184058 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 9566 event pairs, 284 based on Foata normal form. 10/1614 useless extension candidates. Maximal degree in co-relation 10202. Up to 1439 conditions per place. [2024-06-14 11:24:01,399 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 273 selfloop transitions, 33 changer transitions 16/324 dead transitions. [2024-06-14 11:24:01,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 324 transitions, 3997 flow [2024-06-14 11:24:01,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:24:01,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:24:01,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-14 11:24:01,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-14 11:24:01,400 INFO L175 Difference]: Start difference. First operand has 401 places, 304 transitions, 3199 flow. Second operand 11 states and 122 transitions. [2024-06-14 11:24:01,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 324 transitions, 3997 flow [2024-06-14 11:24:02,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 324 transitions, 3865 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-14 11:24:02,149 INFO L231 Difference]: Finished difference. Result has 404 places, 298 transitions, 3093 flow [2024-06-14 11:24:02,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3067, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3093, PETRI_PLACES=404, PETRI_TRANSITIONS=298} [2024-06-14 11:24:02,149 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 373 predicate places. [2024-06-14 11:24:02,149 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 298 transitions, 3093 flow [2024-06-14 11:24:02,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:02,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:24:02,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:24:02,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-14 11:24:02,149 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:24:02,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:24:02,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1806097767, now seen corresponding path program 13 times [2024-06-14 11:24:02,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:24:02,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947811189] [2024-06-14 11:24:02,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:24:02,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:24:02,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:24:03,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:24:03,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:24:03,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947811189] [2024-06-14 11:24:03,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947811189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:24:03,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:24:03,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:24:03,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943764005] [2024-06-14 11:24:03,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:24:03,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:24:03,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:24:03,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:24:03,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:24:03,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:24:03,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 298 transitions, 3093 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:03,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:24:03,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:24:03,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:24:04,264 INFO L124 PetriNetUnfolderBase]: 822/1574 cut-off events. [2024-06-14 11:24:04,265 INFO L125 PetriNetUnfolderBase]: For 185638/185638 co-relation queries the response was YES. [2024-06-14 11:24:04,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10143 conditions, 1574 events. 822/1574 cut-off events. For 185638/185638 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 9334 event pairs, 157 based on Foata normal form. 10/1584 useless extension candidates. Maximal degree in co-relation 9964. Up to 996 conditions per place. [2024-06-14 11:24:04,282 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 183 selfloop transitions, 121 changer transitions 12/318 dead transitions. [2024-06-14 11:24:04,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 318 transitions, 3891 flow [2024-06-14 11:24:04,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:24:04,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:24:04,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-14 11:24:04,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-14 11:24:04,283 INFO L175 Difference]: Start difference. First operand has 404 places, 298 transitions, 3093 flow. Second operand 11 states and 124 transitions. [2024-06-14 11:24:04,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 318 transitions, 3891 flow [2024-06-14 11:24:05,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 318 transitions, 3813 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-14 11:24:05,146 INFO L231 Difference]: Finished difference. Result has 398 places, 295 transitions, 3240 flow [2024-06-14 11:24:05,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3015, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3240, PETRI_PLACES=398, PETRI_TRANSITIONS=295} [2024-06-14 11:24:05,146 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 367 predicate places. [2024-06-14 11:24:05,146 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 295 transitions, 3240 flow [2024-06-14 11:24:05,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:05,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:24:05,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:24:05,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-14 11:24:05,146 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:24:05,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:24:05,147 INFO L85 PathProgramCache]: Analyzing trace with hash 907983815, now seen corresponding path program 37 times [2024-06-14 11:24:05,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:24:05,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708519026] [2024-06-14 11:24:05,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:24:05,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:24:05,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:24:06,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:24:06,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:24:06,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708519026] [2024-06-14 11:24:06,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708519026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:24:06,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:24:06,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:24:06,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612739872] [2024-06-14 11:24:06,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:24:06,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:24:06,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:24:06,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:24:06,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:24:06,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:24:06,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 295 transitions, 3240 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:06,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:24:06,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:24:06,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:24:07,045 INFO L124 PetriNetUnfolderBase]: 802/1534 cut-off events. [2024-06-14 11:24:07,045 INFO L125 PetriNetUnfolderBase]: For 144045/144045 co-relation queries the response was YES. [2024-06-14 11:24:07,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10177 conditions, 1534 events. 802/1534 cut-off events. For 144045/144045 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 9064 event pairs, 157 based on Foata normal form. 2/1536 useless extension candidates. Maximal degree in co-relation 10001. Up to 1329 conditions per place. [2024-06-14 11:24:07,064 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 256 selfloop transitions, 50 changer transitions 1/309 dead transitions. [2024-06-14 11:24:07,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 309 transitions, 3964 flow [2024-06-14 11:24:07,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:24:07,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:24:07,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-14 11:24:07,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.315625 [2024-06-14 11:24:07,065 INFO L175 Difference]: Start difference. First operand has 398 places, 295 transitions, 3240 flow. Second operand 10 states and 101 transitions. [2024-06-14 11:24:07,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 309 transitions, 3964 flow [2024-06-14 11:24:07,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 309 transitions, 3718 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 11:24:07,666 INFO L231 Difference]: Finished difference. Result has 395 places, 296 transitions, 3158 flow [2024-06-14 11:24:07,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2994, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3158, PETRI_PLACES=395, PETRI_TRANSITIONS=296} [2024-06-14 11:24:07,666 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 364 predicate places. [2024-06-14 11:24:07,666 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 296 transitions, 3158 flow [2024-06-14 11:24:07,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:07,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:24:07,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:24:07,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-14 11:24:07,666 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:24:07,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:24:07,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1496049367, now seen corresponding path program 14 times [2024-06-14 11:24:07,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:24:07,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827357700] [2024-06-14 11:24:07,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:24:07,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:24:07,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:24:08,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:24:08,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:24:08,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827357700] [2024-06-14 11:24:08,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827357700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:24:08,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:24:08,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:24:08,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197835268] [2024-06-14 11:24:08,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:24:08,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:24:08,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:24:08,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:24:08,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:24:08,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:24:08,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 296 transitions, 3158 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:08,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:24:08,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:24:08,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:24:09,543 INFO L124 PetriNetUnfolderBase]: 850/1634 cut-off events. [2024-06-14 11:24:09,544 INFO L125 PetriNetUnfolderBase]: For 223459/223459 co-relation queries the response was YES. [2024-06-14 11:24:09,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11792 conditions, 1634 events. 850/1634 cut-off events. For 223459/223459 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 9777 event pairs, 167 based on Foata normal form. 8/1642 useless extension candidates. Maximal degree in co-relation 11617. Up to 992 conditions per place. [2024-06-14 11:24:09,560 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 190 selfloop transitions, 119 changer transitions 10/321 dead transitions. [2024-06-14 11:24:09,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 321 transitions, 4256 flow [2024-06-14 11:24:09,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:24:09,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:24:09,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-14 11:24:09,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-14 11:24:09,561 INFO L175 Difference]: Start difference. First operand has 395 places, 296 transitions, 3158 flow. Second operand 11 states and 127 transitions. [2024-06-14 11:24:09,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 321 transitions, 4256 flow [2024-06-14 11:24:10,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 321 transitions, 4102 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-14 11:24:10,413 INFO L231 Difference]: Finished difference. Result has 399 places, 293 transitions, 3287 flow [2024-06-14 11:24:10,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3004, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3287, PETRI_PLACES=399, PETRI_TRANSITIONS=293} [2024-06-14 11:24:10,413 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 368 predicate places. [2024-06-14 11:24:10,413 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 293 transitions, 3287 flow [2024-06-14 11:24:10,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:10,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:24:10,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:24:10,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-14 11:24:10,414 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:24:10,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:24:10,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1503677723, now seen corresponding path program 38 times [2024-06-14 11:24:10,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:24:10,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577289509] [2024-06-14 11:24:10,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:24:10,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:24:10,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:24:11,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:24:11,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:24:11,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577289509] [2024-06-14 11:24:11,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577289509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:24:11,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:24:11,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:24:11,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687415444] [2024-06-14 11:24:11,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:24:11,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:24:11,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:24:11,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:24:11,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:24:11,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:24:11,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 293 transitions, 3287 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:11,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:24:11,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:24:11,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:24:11,917 INFO L124 PetriNetUnfolderBase]: 827/1585 cut-off events. [2024-06-14 11:24:11,917 INFO L125 PetriNetUnfolderBase]: For 190991/190991 co-relation queries the response was YES. [2024-06-14 11:24:11,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11432 conditions, 1585 events. 827/1585 cut-off events. For 190991/190991 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 9349 event pairs, 299 based on Foata normal form. 2/1587 useless extension candidates. Maximal degree in co-relation 11255. Up to 1492 conditions per place. [2024-06-14 11:24:11,936 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 273 selfloop transitions, 31 changer transitions 0/306 dead transitions. [2024-06-14 11:24:11,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 306 transitions, 3959 flow [2024-06-14 11:24:11,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:24:11,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:24:11,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-14 11:24:11,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-14 11:24:11,937 INFO L175 Difference]: Start difference. First operand has 399 places, 293 transitions, 3287 flow. Second operand 10 states and 107 transitions. [2024-06-14 11:24:11,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 306 transitions, 3959 flow [2024-06-14 11:24:12,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 306 transitions, 3709 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-14 11:24:12,731 INFO L231 Difference]: Finished difference. Result has 393 places, 293 transitions, 3103 flow [2024-06-14 11:24:12,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3037, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3103, PETRI_PLACES=393, PETRI_TRANSITIONS=293} [2024-06-14 11:24:12,732 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 362 predicate places. [2024-06-14 11:24:12,732 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 293 transitions, 3103 flow [2024-06-14 11:24:12,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:12,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:24:12,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:24:12,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-14 11:24:12,732 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:24:12,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:24:12,733 INFO L85 PathProgramCache]: Analyzing trace with hash -288508135, now seen corresponding path program 15 times [2024-06-14 11:24:12,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:24:12,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53264076] [2024-06-14 11:24:12,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:24:12,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:24:12,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:24:14,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:24:14,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:24:14,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53264076] [2024-06-14 11:24:14,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53264076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:24:14,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:24:14,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:24:14,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584080639] [2024-06-14 11:24:14,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:24:14,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:24:14,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:24:14,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:24:14,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:24:14,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:24:14,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 293 transitions, 3103 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:14,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:24:14,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:24:14,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:24:14,858 INFO L124 PetriNetUnfolderBase]: 843/1621 cut-off events. [2024-06-14 11:24:14,859 INFO L125 PetriNetUnfolderBase]: For 219253/219253 co-relation queries the response was YES. [2024-06-14 11:24:14,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11299 conditions, 1621 events. 843/1621 cut-off events. For 219253/219253 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 9637 event pairs, 184 based on Foata normal form. 10/1631 useless extension candidates. Maximal degree in co-relation 11124. Up to 1357 conditions per place. [2024-06-14 11:24:14,876 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 243 selfloop transitions, 48 changer transitions 19/312 dead transitions. [2024-06-14 11:24:14,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 312 transitions, 3863 flow [2024-06-14 11:24:14,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:24:14,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:24:14,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-14 11:24:14,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32954545454545453 [2024-06-14 11:24:14,876 INFO L175 Difference]: Start difference. First operand has 393 places, 293 transitions, 3103 flow. Second operand 11 states and 116 transitions. [2024-06-14 11:24:14,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 312 transitions, 3863 flow [2024-06-14 11:24:15,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 312 transitions, 3745 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-14 11:24:15,826 INFO L231 Difference]: Finished difference. Result has 395 places, 285 transitions, 3014 flow [2024-06-14 11:24:15,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2985, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3014, PETRI_PLACES=395, PETRI_TRANSITIONS=285} [2024-06-14 11:24:15,827 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 364 predicate places. [2024-06-14 11:24:15,827 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 285 transitions, 3014 flow [2024-06-14 11:24:15,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:15,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:24:15,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:24:15,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-14 11:24:15,827 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:24:15,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:24:15,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1503683303, now seen corresponding path program 39 times [2024-06-14 11:24:15,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:24:15,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559862417] [2024-06-14 11:24:15,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:24:15,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:24:15,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:24:16,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:24:16,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:24:16,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559862417] [2024-06-14 11:24:16,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559862417] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:24:16,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:24:16,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:24:16,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284894735] [2024-06-14 11:24:16,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:24:16,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:24:16,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:24:16,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:24:16,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:24:16,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:24:16,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 285 transitions, 3014 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:16,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:24:16,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:24:16,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:24:17,390 INFO L124 PetriNetUnfolderBase]: 844/1628 cut-off events. [2024-06-14 11:24:17,390 INFO L125 PetriNetUnfolderBase]: For 245063/245063 co-relation queries the response was YES. [2024-06-14 11:24:17,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12709 conditions, 1628 events. 844/1628 cut-off events. For 245063/245063 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 9705 event pairs, 182 based on Foata normal form. 2/1630 useless extension candidates. Maximal degree in co-relation 12533. Up to 1035 conditions per place. [2024-06-14 11:24:17,410 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 184 selfloop transitions, 118 changer transitions 1/305 dead transitions. [2024-06-14 11:24:17,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 305 transitions, 4064 flow [2024-06-14 11:24:17,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:24:17,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:24:17,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-14 11:24:17,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-14 11:24:17,411 INFO L175 Difference]: Start difference. First operand has 395 places, 285 transitions, 3014 flow. Second operand 10 states and 115 transitions. [2024-06-14 11:24:17,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 305 transitions, 4064 flow [2024-06-14 11:24:18,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 305 transitions, 3944 flow, removed 12 selfloop flow, removed 11 redundant places. [2024-06-14 11:24:18,346 INFO L231 Difference]: Finished difference. Result has 388 places, 287 transitions, 3268 flow [2024-06-14 11:24:18,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2906, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3268, PETRI_PLACES=388, PETRI_TRANSITIONS=287} [2024-06-14 11:24:18,346 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 357 predicate places. [2024-06-14 11:24:18,346 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 287 transitions, 3268 flow [2024-06-14 11:24:18,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:18,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:24:18,347 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:24:18,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-14 11:24:18,347 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:24:18,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:24:18,347 INFO L85 PathProgramCache]: Analyzing trace with hash -87418885, now seen corresponding path program 16 times [2024-06-14 11:24:18,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:24:18,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146878152] [2024-06-14 11:24:18,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:24:18,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:24:18,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:24:19,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:24:19,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:24:19,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146878152] [2024-06-14 11:24:19,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146878152] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:24:19,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:24:19,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:24:19,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613313884] [2024-06-14 11:24:19,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:24:19,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:24:19,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:24:19,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:24:19,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:24:19,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:24:19,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 287 transitions, 3268 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:19,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:24:19,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:24:19,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:24:20,599 INFO L124 PetriNetUnfolderBase]: 870/1682 cut-off events. [2024-06-14 11:24:20,599 INFO L125 PetriNetUnfolderBase]: For 276465/276465 co-relation queries the response was YES. [2024-06-14 11:24:20,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13080 conditions, 1682 events. 870/1682 cut-off events. For 276465/276465 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 10129 event pairs, 202 based on Foata normal form. 12/1694 useless extension candidates. Maximal degree in co-relation 12907. Up to 1404 conditions per place. [2024-06-14 11:24:20,617 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 233 selfloop transitions, 55 changer transitions 18/308 dead transitions. [2024-06-14 11:24:20,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 308 transitions, 4092 flow [2024-06-14 11:24:20,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:24:20,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:24:20,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-14 11:24:20,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-14 11:24:20,618 INFO L175 Difference]: Start difference. First operand has 388 places, 287 transitions, 3268 flow. Second operand 11 states and 120 transitions. [2024-06-14 11:24:20,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 308 transitions, 4092 flow [2024-06-14 11:24:21,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 308 transitions, 3840 flow, removed 36 selfloop flow, removed 8 redundant places. [2024-06-14 11:24:21,489 INFO L231 Difference]: Finished difference. Result has 392 places, 282 transitions, 3098 flow [2024-06-14 11:24:21,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3022, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3098, PETRI_PLACES=392, PETRI_TRANSITIONS=282} [2024-06-14 11:24:21,489 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 361 predicate places. [2024-06-14 11:24:21,489 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 282 transitions, 3098 flow [2024-06-14 11:24:21,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:21,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:24:21,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:24:21,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-14 11:24:21,490 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:24:21,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:24:21,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1115054391, now seen corresponding path program 17 times [2024-06-14 11:24:21,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:24:21,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961710704] [2024-06-14 11:24:21,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:24:21,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:24:21,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:24:22,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:24:22,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:24:22,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961710704] [2024-06-14 11:24:22,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961710704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:24:22,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:24:22,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:24:22,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700889582] [2024-06-14 11:24:22,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:24:22,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:24:22,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:24:22,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:24:22,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:24:22,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:24:22,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 282 transitions, 3098 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:22,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:24:22,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:24:22,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:24:23,511 INFO L124 PetriNetUnfolderBase]: 852/1652 cut-off events. [2024-06-14 11:24:23,511 INFO L125 PetriNetUnfolderBase]: For 268601/268601 co-relation queries the response was YES. [2024-06-14 11:24:23,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12718 conditions, 1652 events. 852/1652 cut-off events. For 268601/268601 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 9921 event pairs, 204 based on Foata normal form. 10/1662 useless extension candidates. Maximal degree in co-relation 12544. Up to 1379 conditions per place. [2024-06-14 11:24:23,531 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 229 selfloop transitions, 58 changer transitions 12/301 dead transitions. [2024-06-14 11:24:23,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 301 transitions, 3846 flow [2024-06-14 11:24:23,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:24:23,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:24:23,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-14 11:24:23,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380681818181818 [2024-06-14 11:24:23,531 INFO L175 Difference]: Start difference. First operand has 392 places, 282 transitions, 3098 flow. Second operand 11 states and 119 transitions. [2024-06-14 11:24:23,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 301 transitions, 3846 flow [2024-06-14 11:24:24,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 301 transitions, 3728 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 11:24:24,485 INFO L231 Difference]: Finished difference. Result has 388 places, 279 transitions, 3079 flow [2024-06-14 11:24:24,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2980, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3079, PETRI_PLACES=388, PETRI_TRANSITIONS=279} [2024-06-14 11:24:24,486 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 357 predicate places. [2024-06-14 11:24:24,486 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 279 transitions, 3079 flow [2024-06-14 11:24:24,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:24,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:24:24,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:24:24,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-14 11:24:24,486 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:24:24,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:24:24,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1115063691, now seen corresponding path program 18 times [2024-06-14 11:24:24,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:24:24,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063394802] [2024-06-14 11:24:24,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:24:24,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:24:24,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:24:25,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:24:25,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:24:25,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063394802] [2024-06-14 11:24:25,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063394802] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:24:25,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:24:25,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:24:25,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532171390] [2024-06-14 11:24:25,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:24:25,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:24:25,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:24:25,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:24:25,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:24:26,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:24:26,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 279 transitions, 3079 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:26,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:24:26,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:24:26,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:24:26,544 INFO L124 PetriNetUnfolderBase]: 876/1704 cut-off events. [2024-06-14 11:24:26,544 INFO L125 PetriNetUnfolderBase]: For 308053/308053 co-relation queries the response was YES. [2024-06-14 11:24:26,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14182 conditions, 1704 events. 876/1704 cut-off events. For 308053/308053 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 10312 event pairs, 216 based on Foata normal form. 8/1712 useless extension candidates. Maximal degree in co-relation 14010. Up to 1365 conditions per place. [2024-06-14 11:24:26,566 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 235 selfloop transitions, 56 changer transitions 10/303 dead transitions. [2024-06-14 11:24:26,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 303 transitions, 4117 flow [2024-06-14 11:24:26,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:24:26,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:24:26,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-14 11:24:26,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-14 11:24:26,566 INFO L175 Difference]: Start difference. First operand has 388 places, 279 transitions, 3079 flow. Second operand 11 states and 122 transitions. [2024-06-14 11:24:26,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 303 transitions, 4117 flow [2024-06-14 11:24:27,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 303 transitions, 3993 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 11:24:27,614 INFO L231 Difference]: Finished difference. Result has 387 places, 276 transitions, 3111 flow [2024-06-14 11:24:27,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2959, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3111, PETRI_PLACES=387, PETRI_TRANSITIONS=276} [2024-06-14 11:24:27,615 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 356 predicate places. [2024-06-14 11:24:27,615 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 276 transitions, 3111 flow [2024-06-14 11:24:27,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:27,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:24:27,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:24:27,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-14 11:24:27,616 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:24:27,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:24:27,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1503467977, now seen corresponding path program 19 times [2024-06-14 11:24:27,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:24:27,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774540040] [2024-06-14 11:24:27,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:24:27,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:24:27,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:24:28,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:24:28,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:24:28,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774540040] [2024-06-14 11:24:28,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774540040] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:24:28,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:24:28,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:24:28,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975408151] [2024-06-14 11:24:28,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:24:28,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:24:28,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:24:28,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:24:28,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:24:28,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:24:28,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 276 transitions, 3111 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:28,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:24:28,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:24:28,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:24:29,629 INFO L124 PetriNetUnfolderBase]: 843/1637 cut-off events. [2024-06-14 11:24:29,629 INFO L125 PetriNetUnfolderBase]: For 266842/266842 co-relation queries the response was YES. [2024-06-14 11:24:29,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12902 conditions, 1637 events. 843/1637 cut-off events. For 266842/266842 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 9826 event pairs, 326 based on Foata normal form. 10/1647 useless extension candidates. Maximal degree in co-relation 12730. Up to 1502 conditions per place. [2024-06-14 11:24:29,649 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 256 selfloop transitions, 28 changer transitions 9/295 dead transitions. [2024-06-14 11:24:29,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 295 transitions, 3835 flow [2024-06-14 11:24:29,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:24:29,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:24:29,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-14 11:24:29,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-14 11:24:29,650 INFO L175 Difference]: Start difference. First operand has 387 places, 276 transitions, 3111 flow. Second operand 11 states and 120 transitions. [2024-06-14 11:24:29,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 295 transitions, 3835 flow [2024-06-14 11:24:30,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 295 transitions, 3706 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-06-14 11:24:30,473 INFO L231 Difference]: Finished difference. Result has 382 places, 273 transitions, 3026 flow [2024-06-14 11:24:30,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2984, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3026, PETRI_PLACES=382, PETRI_TRANSITIONS=273} [2024-06-14 11:24:30,474 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 351 predicate places. [2024-06-14 11:24:30,474 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 273 transitions, 3026 flow [2024-06-14 11:24:30,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:30,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:24:30,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:24:30,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-14 11:24:30,474 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:24:30,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:24:30,474 INFO L85 PathProgramCache]: Analyzing trace with hash -923146869, now seen corresponding path program 20 times [2024-06-14 11:24:30,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:24:30,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474608213] [2024-06-14 11:24:30,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:24:30,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:24:30,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:24:31,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:24:31,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:24:31,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474608213] [2024-06-14 11:24:31,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474608213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:24:31,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:24:31,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:24:31,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036161327] [2024-06-14 11:24:31,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:24:31,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:24:31,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:24:31,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:24:31,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:24:31,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:24:31,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 273 transitions, 3026 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:31,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:24:31,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:24:31,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:24:32,243 INFO L124 PetriNetUnfolderBase]: 851/1661 cut-off events. [2024-06-14 11:24:32,243 INFO L125 PetriNetUnfolderBase]: For 282692/282692 co-relation queries the response was YES. [2024-06-14 11:24:32,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13525 conditions, 1661 events. 851/1661 cut-off events. For 282692/282692 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 10014 event pairs, 332 based on Foata normal form. 8/1669 useless extension candidates. Maximal degree in co-relation 13355. Up to 1382 conditions per place. [2024-06-14 11:24:32,264 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 264 selfloop transitions, 18 changer transitions 10/294 dead transitions. [2024-06-14 11:24:32,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 294 transitions, 3940 flow [2024-06-14 11:24:32,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:24:32,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:24:32,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-14 11:24:32,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-14 11:24:32,265 INFO L175 Difference]: Start difference. First operand has 382 places, 273 transitions, 3026 flow. Second operand 10 states and 109 transitions. [2024-06-14 11:24:32,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 294 transitions, 3940 flow [2024-06-14 11:24:33,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 294 transitions, 3878 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 11:24:33,170 INFO L231 Difference]: Finished difference. Result has 380 places, 270 transitions, 2985 flow [2024-06-14 11:24:33,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2966, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2985, PETRI_PLACES=380, PETRI_TRANSITIONS=270} [2024-06-14 11:24:33,170 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 349 predicate places. [2024-06-14 11:24:33,170 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 270 transitions, 2985 flow [2024-06-14 11:24:33,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:33,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:24:33,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:24:33,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-14 11:24:33,171 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:24:33,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:24:33,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1247897289, now seen corresponding path program 21 times [2024-06-14 11:24:33,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:24:33,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575657661] [2024-06-14 11:24:33,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:24:33,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:24:33,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:24:34,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:24:34,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:24:34,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575657661] [2024-06-14 11:24:34,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575657661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:24:34,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:24:34,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:24:34,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55088073] [2024-06-14 11:24:34,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:24:34,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:24:34,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:24:34,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:24:34,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:24:34,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:24:34,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 270 transitions, 2985 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:34,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:24:34,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:24:34,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:24:35,294 INFO L124 PetriNetUnfolderBase]: 829/1623 cut-off events. [2024-06-14 11:24:35,294 INFO L125 PetriNetUnfolderBase]: For 287748/287748 co-relation queries the response was YES. [2024-06-14 11:24:35,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12205 conditions, 1623 events. 829/1623 cut-off events. For 287748/287748 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 9738 event pairs, 330 based on Foata normal form. 22/1645 useless extension candidates. Maximal degree in co-relation 12035. Up to 1465 conditions per place. [2024-06-14 11:24:35,314 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 255 selfloop transitions, 18 changer transitions 13/288 dead transitions. [2024-06-14 11:24:35,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 288 transitions, 3667 flow [2024-06-14 11:24:35,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:24:35,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:24:35,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 120 transitions. [2024-06-14 11:24:35,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-14 11:24:35,315 INFO L175 Difference]: Start difference. First operand has 380 places, 270 transitions, 2985 flow. Second operand 12 states and 120 transitions. [2024-06-14 11:24:35,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 288 transitions, 3667 flow [2024-06-14 11:24:36,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 288 transitions, 3595 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-14 11:24:36,139 INFO L231 Difference]: Finished difference. Result has 381 places, 263 transitions, 2901 flow [2024-06-14 11:24:36,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2913, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2901, PETRI_PLACES=381, PETRI_TRANSITIONS=263} [2024-06-14 11:24:36,140 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 350 predicate places. [2024-06-14 11:24:36,140 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 263 transitions, 2901 flow [2024-06-14 11:24:36,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:36,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:24:36,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:24:36,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-14 11:24:36,140 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:24:36,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:24:36,141 INFO L85 PathProgramCache]: Analyzing trace with hash -934188759, now seen corresponding path program 22 times [2024-06-14 11:24:36,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:24:36,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202936086] [2024-06-14 11:24:36,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:24:36,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:24:36,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:24:37,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:24:37,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:24:37,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202936086] [2024-06-14 11:24:37,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202936086] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:24:37,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:24:37,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:24:37,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475151761] [2024-06-14 11:24:37,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:24:37,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:24:37,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:24:37,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:24:37,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:24:37,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:24:37,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 263 transitions, 2901 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:37,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:24:37,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:24:37,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:24:37,638 INFO L124 PetriNetUnfolderBase]: 795/1569 cut-off events. [2024-06-14 11:24:37,638 INFO L125 PetriNetUnfolderBase]: For 229462/229462 co-relation queries the response was YES. [2024-06-14 11:24:37,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11839 conditions, 1569 events. 795/1569 cut-off events. For 229462/229462 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 9446 event pairs, 326 based on Foata normal form. 8/1577 useless extension candidates. Maximal degree in co-relation 11669. Up to 1455 conditions per place. [2024-06-14 11:24:37,656 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 252 selfloop transitions, 15 changer transitions 11/280 dead transitions. [2024-06-14 11:24:37,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 280 transitions, 3553 flow [2024-06-14 11:24:37,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:24:37,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:24:37,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-14 11:24:37,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-14 11:24:37,656 INFO L175 Difference]: Start difference. First operand has 381 places, 263 transitions, 2901 flow. Second operand 10 states and 105 transitions. [2024-06-14 11:24:37,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 280 transitions, 3553 flow [2024-06-14 11:24:38,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 280 transitions, 3499 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-14 11:24:38,455 INFO L231 Difference]: Finished difference. Result has 376 places, 259 transitions, 2850 flow [2024-06-14 11:24:38,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2847, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2850, PETRI_PLACES=376, PETRI_TRANSITIONS=259} [2024-06-14 11:24:38,455 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 345 predicate places. [2024-06-14 11:24:38,455 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 259 transitions, 2850 flow [2024-06-14 11:24:38,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:38,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:24:38,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:24:38,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-14 11:24:38,455 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:24:38,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:24:38,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1107435335, now seen corresponding path program 40 times [2024-06-14 11:24:38,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:24:38,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478588371] [2024-06-14 11:24:38,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:24:38,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:24:38,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:24:39,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:24:39,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:24:39,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478588371] [2024-06-14 11:24:39,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478588371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:24:39,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:24:39,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:24:39,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549165602] [2024-06-14 11:24:39,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:24:39,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:24:39,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:24:39,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:24:39,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:24:39,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:24:39,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 259 transitions, 2850 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:39,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:24:39,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:24:39,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:24:40,319 INFO L124 PetriNetUnfolderBase]: 760/1492 cut-off events. [2024-06-14 11:24:40,319 INFO L125 PetriNetUnfolderBase]: For 198889/198889 co-relation queries the response was YES. [2024-06-14 11:24:40,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11263 conditions, 1492 events. 760/1492 cut-off events. For 198889/198889 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 8823 event pairs, 202 based on Foata normal form. 2/1494 useless extension candidates. Maximal degree in co-relation 11093. Up to 1035 conditions per place. [2024-06-14 11:24:40,334 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 178 selfloop transitions, 91 changer transitions 1/272 dead transitions. [2024-06-14 11:24:40,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 272 transitions, 3466 flow [2024-06-14 11:24:40,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:24:40,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:24:40,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-14 11:24:40,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-14 11:24:40,334 INFO L175 Difference]: Start difference. First operand has 376 places, 259 transitions, 2850 flow. Second operand 10 states and 109 transitions. [2024-06-14 11:24:40,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 272 transitions, 3466 flow [2024-06-14 11:24:41,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 272 transitions, 3432 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 11:24:41,048 INFO L231 Difference]: Finished difference. Result has 373 places, 259 transitions, 3003 flow [2024-06-14 11:24:41,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2816, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3003, PETRI_PLACES=373, PETRI_TRANSITIONS=259} [2024-06-14 11:24:41,048 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 342 predicate places. [2024-06-14 11:24:41,048 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 259 transitions, 3003 flow [2024-06-14 11:24:41,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:41,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:24:41,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:24:41,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-14 11:24:41,049 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:24:41,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:24:41,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1107645081, now seen corresponding path program 23 times [2024-06-14 11:24:41,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:24:41,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94891620] [2024-06-14 11:24:41,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:24:41,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:24:41,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:24:42,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:24:42,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:24:42,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94891620] [2024-06-14 11:24:42,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94891620] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:24:42,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:24:42,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:24:42,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149616600] [2024-06-14 11:24:42,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:24:42,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:24:42,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:24:42,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:24:42,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:24:42,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:24:42,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 259 transitions, 3003 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:42,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:24:42,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:24:42,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:24:43,669 INFO L124 PetriNetUnfolderBase]: 755/1489 cut-off events. [2024-06-14 11:24:43,669 INFO L125 PetriNetUnfolderBase]: For 212337/212337 co-relation queries the response was YES. [2024-06-14 11:24:43,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10471 conditions, 1489 events. 755/1489 cut-off events. For 212337/212337 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 8845 event pairs, 199 based on Foata normal form. 16/1505 useless extension candidates. Maximal degree in co-relation 10302. Up to 966 conditions per place. [2024-06-14 11:24:43,687 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 172 selfloop transitions, 86 changer transitions 19/279 dead transitions. [2024-06-14 11:24:43,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 279 transitions, 3714 flow [2024-06-14 11:24:43,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:24:43,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:24:43,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-14 11:24:43,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3385416666666667 [2024-06-14 11:24:43,687 INFO L175 Difference]: Start difference. First operand has 373 places, 259 transitions, 3003 flow. Second operand 12 states and 130 transitions. [2024-06-14 11:24:43,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 279 transitions, 3714 flow [2024-06-14 11:24:44,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 279 transitions, 3478 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-14 11:24:44,500 INFO L231 Difference]: Finished difference. Result has 376 places, 250 transitions, 2869 flow [2024-06-14 11:24:44,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2767, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2869, PETRI_PLACES=376, PETRI_TRANSITIONS=250} [2024-06-14 11:24:44,500 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 345 predicate places. [2024-06-14 11:24:44,500 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 250 transitions, 2869 flow [2024-06-14 11:24:44,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:44,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:24:44,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:24:44,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-14 11:24:44,500 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:24:44,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:24:44,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1107429755, now seen corresponding path program 41 times [2024-06-14 11:24:44,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:24:44,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870922499] [2024-06-14 11:24:44,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:24:44,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:24:44,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:24:45,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:24:45,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:24:45,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870922499] [2024-06-14 11:24:45,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870922499] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:24:45,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:24:45,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:24:45,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825628741] [2024-06-14 11:24:45,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:24:45,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:24:45,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:24:45,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:24:45,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:24:45,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:24:45,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 250 transitions, 2869 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:45,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:24:45,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:24:45,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:24:46,309 INFO L124 PetriNetUnfolderBase]: 705/1391 cut-off events. [2024-06-14 11:24:46,309 INFO L125 PetriNetUnfolderBase]: For 153384/153384 co-relation queries the response was YES. [2024-06-14 11:24:46,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9728 conditions, 1391 events. 705/1391 cut-off events. For 153384/153384 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 8156 event pairs, 172 based on Foata normal form. 2/1393 useless extension candidates. Maximal degree in co-relation 9558. Up to 1177 conditions per place. [2024-06-14 11:24:46,326 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 210 selfloop transitions, 51 changer transitions 1/264 dead transitions. [2024-06-14 11:24:46,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 264 transitions, 3471 flow [2024-06-14 11:24:46,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:24:46,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:24:46,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-14 11:24:46,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.321875 [2024-06-14 11:24:46,326 INFO L175 Difference]: Start difference. First operand has 376 places, 250 transitions, 2869 flow. Second operand 10 states and 103 transitions. [2024-06-14 11:24:46,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 264 transitions, 3471 flow [2024-06-14 11:24:47,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 264 transitions, 3277 flow, removed 11 selfloop flow, removed 14 redundant places. [2024-06-14 11:24:47,008 INFO L231 Difference]: Finished difference. Result has 365 places, 250 transitions, 2789 flow [2024-06-14 11:24:47,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2683, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2789, PETRI_PLACES=365, PETRI_TRANSITIONS=250} [2024-06-14 11:24:47,008 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 334 predicate places. [2024-06-14 11:24:47,008 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 250 transitions, 2789 flow [2024-06-14 11:24:47,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:47,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:24:47,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:24:47,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-14 11:24:47,009 INFO L420 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:24:47,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:24:47,009 INFO L85 PathProgramCache]: Analyzing trace with hash -354523991, now seen corresponding path program 24 times [2024-06-14 11:24:47,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:24:47,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678062650] [2024-06-14 11:24:47,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:24:47,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:24:47,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:24:48,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:24:48,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:24:48,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678062650] [2024-06-14 11:24:48,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678062650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:24:48,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:24:48,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:24:48,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050899128] [2024-06-14 11:24:48,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:24:48,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:24:48,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:24:48,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:24:48,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:24:48,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:24:48,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 250 transitions, 2789 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:48,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:24:48,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:24:48,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:24:48,870 INFO L124 PetriNetUnfolderBase]: 703/1393 cut-off events. [2024-06-14 11:24:48,870 INFO L125 PetriNetUnfolderBase]: For 149056/149056 co-relation queries the response was YES. [2024-06-14 11:24:48,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9125 conditions, 1393 events. 703/1393 cut-off events. For 149056/149056 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 8195 event pairs, 291 based on Foata normal form. 8/1401 useless extension candidates. Maximal degree in co-relation 8960. Up to 1313 conditions per place. [2024-06-14 11:24:48,886 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 242 selfloop transitions, 13 changer transitions 10/267 dead transitions. [2024-06-14 11:24:48,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 267 transitions, 3405 flow [2024-06-14 11:24:48,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:24:48,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:24:48,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 108 transitions. [2024-06-14 11:24:48,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3068181818181818 [2024-06-14 11:24:48,887 INFO L175 Difference]: Start difference. First operand has 365 places, 250 transitions, 2789 flow. Second operand 11 states and 108 transitions. [2024-06-14 11:24:48,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 267 transitions, 3405 flow [2024-06-14 11:24:49,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 267 transitions, 3059 flow, removed 32 selfloop flow, removed 12 redundant places. [2024-06-14 11:24:49,492 INFO L231 Difference]: Finished difference. Result has 364 places, 247 transitions, 2460 flow [2024-06-14 11:24:49,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2449, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2460, PETRI_PLACES=364, PETRI_TRANSITIONS=247} [2024-06-14 11:24:49,493 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 333 predicate places. [2024-06-14 11:24:49,493 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 247 transitions, 2460 flow [2024-06-14 11:24:49,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:49,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:24:49,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:24:49,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-14 11:24:49,493 INFO L420 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:24:49,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:24:49,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1326438550, now seen corresponding path program 1 times [2024-06-14 11:24:49,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:24:49,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183552925] [2024-06-14 11:24:49,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:24:49,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:24:49,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:24:51,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:24:51,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:24:51,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183552925] [2024-06-14 11:24:51,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183552925] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:24:51,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:24:51,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:24:51,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931234050] [2024-06-14 11:24:51,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:24:51,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:24:51,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:24:51,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:24:51,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:24:51,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:24:51,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 247 transitions, 2460 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:51,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:24:51,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:24:51,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:24:52,053 INFO L124 PetriNetUnfolderBase]: 692/1372 cut-off events. [2024-06-14 11:24:52,053 INFO L125 PetriNetUnfolderBase]: For 142034/142034 co-relation queries the response was YES. [2024-06-14 11:24:52,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8384 conditions, 1372 events. 692/1372 cut-off events. For 142034/142034 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 8055 event pairs, 153 based on Foata normal form. 6/1378 useless extension candidates. Maximal degree in co-relation 8221. Up to 1175 conditions per place. [2024-06-14 11:24:52,068 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 214 selfloop transitions, 28 changer transitions 23/267 dead transitions. [2024-06-14 11:24:52,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 267 transitions, 3042 flow [2024-06-14 11:24:52,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:24:52,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:24:52,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 123 transitions. [2024-06-14 11:24:52,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3203125 [2024-06-14 11:24:52,069 INFO L175 Difference]: Start difference. First operand has 364 places, 247 transitions, 2460 flow. Second operand 12 states and 123 transitions. [2024-06-14 11:24:52,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 267 transitions, 3042 flow [2024-06-14 11:24:52,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 267 transitions, 3002 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-14 11:24:52,606 INFO L231 Difference]: Finished difference. Result has 359 places, 237 transitions, 2364 flow [2024-06-14 11:24:52,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2420, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2364, PETRI_PLACES=359, PETRI_TRANSITIONS=237} [2024-06-14 11:24:52,606 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 328 predicate places. [2024-06-14 11:24:52,606 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 237 transitions, 2364 flow [2024-06-14 11:24:52,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:52,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:24:52,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:24:52,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-14 11:24:52,606 INFO L420 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:24:52,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:24:52,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1437261070, now seen corresponding path program 2 times [2024-06-14 11:24:52,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:24:52,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523112639] [2024-06-14 11:24:52,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:24:52,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:24:52,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:24:54,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:24:54,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:24:54,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523112639] [2024-06-14 11:24:54,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523112639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:24:54,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:24:54,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:24:54,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757408215] [2024-06-14 11:24:54,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:24:54,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:24:54,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:24:54,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:24:54,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:24:54,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:24:54,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 237 transitions, 2364 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:54,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:24:54,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:24:54,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:24:55,050 INFO L124 PetriNetUnfolderBase]: 656/1304 cut-off events. [2024-06-14 11:24:55,051 INFO L125 PetriNetUnfolderBase]: For 128408/128408 co-relation queries the response was YES. [2024-06-14 11:24:55,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7993 conditions, 1304 events. 656/1304 cut-off events. For 128408/128408 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 7552 event pairs, 141 based on Foata normal form. 6/1310 useless extension candidates. Maximal degree in co-relation 7834. Up to 1114 conditions per place. [2024-06-14 11:24:55,065 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 204 selfloop transitions, 32 changer transitions 19/257 dead transitions. [2024-06-14 11:24:55,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 257 transitions, 2934 flow [2024-06-14 11:24:55,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:24:55,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:24:55,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 124 transitions. [2024-06-14 11:24:55,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3229166666666667 [2024-06-14 11:24:55,066 INFO L175 Difference]: Start difference. First operand has 359 places, 237 transitions, 2364 flow. Second operand 12 states and 124 transitions. [2024-06-14 11:24:55,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 257 transitions, 2934 flow [2024-06-14 11:24:55,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 257 transitions, 2866 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-14 11:24:55,549 INFO L231 Difference]: Finished difference. Result has 346 places, 229 transitions, 2269 flow [2024-06-14 11:24:55,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2296, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2269, PETRI_PLACES=346, PETRI_TRANSITIONS=229} [2024-06-14 11:24:55,549 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 315 predicate places. [2024-06-14 11:24:55,550 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 229 transitions, 2269 flow [2024-06-14 11:24:55,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:55,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:24:55,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:24:55,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-14 11:24:55,550 INFO L420 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:24:55,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:24:55,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1244597510, now seen corresponding path program 1 times [2024-06-14 11:24:55,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:24:55,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48357931] [2024-06-14 11:24:55,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:24:55,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:24:55,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:24:57,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:24:57,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:24:57,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48357931] [2024-06-14 11:24:57,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48357931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:24:57,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:24:57,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:24:57,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655386592] [2024-06-14 11:24:57,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:24:57,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:24:57,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:24:57,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:24:57,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:24:57,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:24:57,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 229 transitions, 2269 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:57,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:24:57,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:24:57,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:24:57,908 INFO L124 PetriNetUnfolderBase]: 634/1266 cut-off events. [2024-06-14 11:24:57,908 INFO L125 PetriNetUnfolderBase]: For 136299/136299 co-relation queries the response was YES. [2024-06-14 11:24:57,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7836 conditions, 1266 events. 634/1266 cut-off events. For 136299/136299 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 7313 event pairs, 143 based on Foata normal form. 8/1274 useless extension candidates. Maximal degree in co-relation 7682. Up to 1057 conditions per place. [2024-06-14 11:24:57,922 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 195 selfloop transitions, 43 changer transitions 8/248 dead transitions. [2024-06-14 11:24:57,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 248 transitions, 2861 flow [2024-06-14 11:24:57,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:24:57,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:24:57,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-14 11:24:57,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-14 11:24:57,923 INFO L175 Difference]: Start difference. First operand has 346 places, 229 transitions, 2269 flow. Second operand 11 states and 121 transitions. [2024-06-14 11:24:57,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 248 transitions, 2861 flow [2024-06-14 11:24:58,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 248 transitions, 2789 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 11:24:58,367 INFO L231 Difference]: Finished difference. Result has 337 places, 225 transitions, 2245 flow [2024-06-14 11:24:58,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2197, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2245, PETRI_PLACES=337, PETRI_TRANSITIONS=225} [2024-06-14 11:24:58,367 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 306 predicate places. [2024-06-14 11:24:58,367 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 225 transitions, 2245 flow [2024-06-14 11:24:58,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:58,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:24:58,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:24:58,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-14 11:24:58,368 INFO L420 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:24:58,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:24:58,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1441902700, now seen corresponding path program 3 times [2024-06-14 11:24:58,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:24:58,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875958839] [2024-06-14 11:24:58,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:24:58,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:24:58,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:24:59,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:24:59,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:24:59,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875958839] [2024-06-14 11:24:59,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875958839] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:24:59,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:24:59,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:24:59,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70695332] [2024-06-14 11:24:59,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:24:59,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:24:59,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:24:59,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:24:59,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:24:59,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:24:59,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 225 transitions, 2245 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:59,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:24:59,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:24:59,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:25:00,305 INFO L124 PetriNetUnfolderBase]: 631/1269 cut-off events. [2024-06-14 11:25:00,306 INFO L125 PetriNetUnfolderBase]: For 151887/151887 co-relation queries the response was YES. [2024-06-14 11:25:00,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7787 conditions, 1269 events. 631/1269 cut-off events. For 151887/151887 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 7342 event pairs, 143 based on Foata normal form. 12/1281 useless extension candidates. Maximal degree in co-relation 7636. Up to 1049 conditions per place. [2024-06-14 11:25:00,319 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 191 selfloop transitions, 36 changer transitions 16/245 dead transitions. [2024-06-14 11:25:00,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 245 transitions, 2807 flow [2024-06-14 11:25:00,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:25:00,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:25:00,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-14 11:25:00,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255208333333333 [2024-06-14 11:25:00,320 INFO L175 Difference]: Start difference. First operand has 337 places, 225 transitions, 2245 flow. Second operand 12 states and 125 transitions. [2024-06-14 11:25:00,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 245 transitions, 2807 flow [2024-06-14 11:25:00,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 245 transitions, 2711 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-14 11:25:00,873 INFO L231 Difference]: Finished difference. Result has 336 places, 218 transitions, 2126 flow [2024-06-14 11:25:00,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2149, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2126, PETRI_PLACES=336, PETRI_TRANSITIONS=218} [2024-06-14 11:25:00,874 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 305 predicate places. [2024-06-14 11:25:00,874 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 218 transitions, 2126 flow [2024-06-14 11:25:00,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:00,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:25:00,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:25:00,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-14 11:25:00,874 INFO L420 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:25:00,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:25:00,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1441729720, now seen corresponding path program 4 times [2024-06-14 11:25:00,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:25:00,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931515692] [2024-06-14 11:25:00,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:25:00,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:25:00,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:25:02,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:25:02,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:25:02,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931515692] [2024-06-14 11:25:02,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931515692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:25:02,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:25:02,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:25:02,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969755131] [2024-06-14 11:25:02,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:25:02,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:25:02,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:25:02,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:25:02,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:25:02,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:25:02,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 218 transitions, 2126 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:02,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:25:02,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:25:02,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:25:02,757 INFO L124 PetriNetUnfolderBase]: 610/1226 cut-off events. [2024-06-14 11:25:02,757 INFO L125 PetriNetUnfolderBase]: For 129645/129645 co-relation queries the response was YES. [2024-06-14 11:25:02,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7534 conditions, 1226 events. 610/1226 cut-off events. For 129645/129645 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 7041 event pairs, 149 based on Foata normal form. 6/1232 useless extension candidates. Maximal degree in co-relation 7384. Up to 1051 conditions per place. [2024-06-14 11:25:02,770 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 187 selfloop transitions, 27 changer transitions 24/240 dead transitions. [2024-06-14 11:25:02,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 240 transitions, 2683 flow [2024-06-14 11:25:02,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:25:02,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:25:02,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 124 transitions. [2024-06-14 11:25:02,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3229166666666667 [2024-06-14 11:25:02,770 INFO L175 Difference]: Start difference. First operand has 336 places, 218 transitions, 2126 flow. Second operand 12 states and 124 transitions. [2024-06-14 11:25:02,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 240 transitions, 2683 flow [2024-06-14 11:25:03,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 240 transitions, 2591 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-14 11:25:03,294 INFO L231 Difference]: Finished difference. Result has 331 places, 207 transitions, 1946 flow [2024-06-14 11:25:03,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2034, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1946, PETRI_PLACES=331, PETRI_TRANSITIONS=207} [2024-06-14 11:25:03,295 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 300 predicate places. [2024-06-14 11:25:03,295 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 207 transitions, 1946 flow [2024-06-14 11:25:03,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:03,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:25:03,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:25:03,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-14 11:25:03,295 INFO L420 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:25:03,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:25:03,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1050245994, now seen corresponding path program 5 times [2024-06-14 11:25:03,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:25:03,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302199575] [2024-06-14 11:25:03,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:25:03,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:25:03,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:25:05,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:25:05,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:25:05,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302199575] [2024-06-14 11:25:05,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302199575] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:25:05,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:25:05,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:25:05,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169861482] [2024-06-14 11:25:05,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:25:05,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:25:05,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:25:05,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:25:05,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:25:05,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:25:05,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 207 transitions, 1946 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:05,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:25:05,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:25:05,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:25:05,749 INFO L124 PetriNetUnfolderBase]: 572/1149 cut-off events. [2024-06-14 11:25:05,749 INFO L125 PetriNetUnfolderBase]: For 128869/128869 co-relation queries the response was YES. [2024-06-14 11:25:05,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7095 conditions, 1149 events. 572/1149 cut-off events. For 128869/128869 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 6511 event pairs, 135 based on Foata normal form. 6/1155 useless extension candidates. Maximal degree in co-relation 6946. Up to 1017 conditions per place. [2024-06-14 11:25:05,761 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 183 selfloop transitions, 23 changer transitions 17/225 dead transitions. [2024-06-14 11:25:05,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 225 transitions, 2440 flow [2024-06-14 11:25:05,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:25:05,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:25:05,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 120 transitions. [2024-06-14 11:25:05,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-14 11:25:05,761 INFO L175 Difference]: Start difference. First operand has 331 places, 207 transitions, 1946 flow. Second operand 12 states and 120 transitions. [2024-06-14 11:25:05,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 225 transitions, 2440 flow [2024-06-14 11:25:06,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 225 transitions, 2350 flow, removed 5 selfloop flow, removed 19 redundant places. [2024-06-14 11:25:06,240 INFO L231 Difference]: Finished difference. Result has 321 places, 199 transitions, 1834 flow [2024-06-14 11:25:06,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1856, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1834, PETRI_PLACES=321, PETRI_TRANSITIONS=199} [2024-06-14 11:25:06,240 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 290 predicate places. [2024-06-14 11:25:06,240 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 199 transitions, 1834 flow [2024-06-14 11:25:06,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:06,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:25:06,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:25:06,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-14 11:25:06,241 INFO L420 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:25:06,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:25:06,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1922463034, now seen corresponding path program 6 times [2024-06-14 11:25:06,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:25:06,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825319959] [2024-06-14 11:25:06,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:25:06,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:25:06,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:25:07,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:25:07,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:25:07,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825319959] [2024-06-14 11:25:07,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825319959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:25:07,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:25:07,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:25:07,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219155457] [2024-06-14 11:25:07,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:25:07,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:25:07,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:25:07,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:25:07,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:25:07,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:25:07,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 199 transitions, 1834 flow. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:07,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:25:07,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:25:07,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:25:08,087 INFO L124 PetriNetUnfolderBase]: 558/1115 cut-off events. [2024-06-14 11:25:08,087 INFO L125 PetriNetUnfolderBase]: For 128845/128845 co-relation queries the response was YES. [2024-06-14 11:25:08,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6911 conditions, 1115 events. 558/1115 cut-off events. For 128845/128845 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 6276 event pairs, 130 based on Foata normal form. 6/1121 useless extension candidates. Maximal degree in co-relation 6767. Up to 982 conditions per place. [2024-06-14 11:25:08,098 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 177 selfloop transitions, 26 changer transitions 15/220 dead transitions. [2024-06-14 11:25:08,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 220 transitions, 2348 flow [2024-06-14 11:25:08,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:25:08,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:25:08,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 123 transitions. [2024-06-14 11:25:08,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3203125 [2024-06-14 11:25:08,099 INFO L175 Difference]: Start difference. First operand has 321 places, 199 transitions, 1834 flow. Second operand 12 states and 123 transitions. [2024-06-14 11:25:08,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 220 transitions, 2348 flow [2024-06-14 11:25:08,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 220 transitions, 2245 flow, removed 4 selfloop flow, removed 20 redundant places. [2024-06-14 11:25:08,598 INFO L231 Difference]: Finished difference. Result has 308 places, 195 transitions, 1752 flow [2024-06-14 11:25:08,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1731, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1752, PETRI_PLACES=308, PETRI_TRANSITIONS=195} [2024-06-14 11:25:08,599 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 277 predicate places. [2024-06-14 11:25:08,599 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 195 transitions, 1752 flow [2024-06-14 11:25:08,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:08,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:25:08,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:25:08,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-14 11:25:08,599 INFO L420 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:25:08,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:25:08,599 INFO L85 PathProgramCache]: Analyzing trace with hash -417339118, now seen corresponding path program 7 times [2024-06-14 11:25:08,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:25:08,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092077490] [2024-06-14 11:25:08,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:25:08,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:25:08,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:25:09,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:25:09,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:25:09,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092077490] [2024-06-14 11:25:09,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092077490] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:25:09,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:25:09,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:25:09,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306072665] [2024-06-14 11:25:09,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:25:09,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:25:09,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:25:09,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:25:09,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:25:10,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:25:10,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 195 transitions, 1752 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:10,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:25:10,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:25:10,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:25:10,470 INFO L124 PetriNetUnfolderBase]: 556/1117 cut-off events. [2024-06-14 11:25:10,470 INFO L125 PetriNetUnfolderBase]: For 155279/155279 co-relation queries the response was YES. [2024-06-14 11:25:10,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6839 conditions, 1117 events. 556/1117 cut-off events. For 155279/155279 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 6288 event pairs, 140 based on Foata normal form. 14/1131 useless extension candidates. Maximal degree in co-relation 6701. Up to 939 conditions per place. [2024-06-14 11:25:10,481 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 168 selfloop transitions, 27 changer transitions 18/215 dead transitions. [2024-06-14 11:25:10,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 215 transitions, 2280 flow [2024-06-14 11:25:10,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:25:10,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:25:10,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-14 11:25:10,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255208333333333 [2024-06-14 11:25:10,481 INFO L175 Difference]: Start difference. First operand has 308 places, 195 transitions, 1752 flow. Second operand 12 states and 125 transitions. [2024-06-14 11:25:10,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 215 transitions, 2280 flow [2024-06-14 11:25:10,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 215 transitions, 2215 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-14 11:25:10,954 INFO L231 Difference]: Finished difference. Result has 301 places, 186 transitions, 1644 flow [2024-06-14 11:25:10,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1687, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1644, PETRI_PLACES=301, PETRI_TRANSITIONS=186} [2024-06-14 11:25:10,954 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 270 predicate places. [2024-06-14 11:25:10,955 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 186 transitions, 1644 flow [2024-06-14 11:25:10,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:10,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:25:10,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:25:10,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-14 11:25:10,955 INFO L420 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:25:10,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:25:10,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1188591236, now seen corresponding path program 8 times [2024-06-14 11:25:10,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:25:10,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500613716] [2024-06-14 11:25:10,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:25:10,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:25:10,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:25:12,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:25:12,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:25:12,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500613716] [2024-06-14 11:25:12,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500613716] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:25:12,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:25:12,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:25:12,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89228531] [2024-06-14 11:25:12,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:25:12,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:25:12,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:25:12,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:25:12,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:25:12,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:25:12,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 186 transitions, 1644 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:12,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:25:12,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:25:12,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:25:13,072 INFO L124 PetriNetUnfolderBase]: 530/1067 cut-off events. [2024-06-14 11:25:13,073 INFO L125 PetriNetUnfolderBase]: For 125446/125446 co-relation queries the response was YES. [2024-06-14 11:25:13,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6558 conditions, 1067 events. 530/1067 cut-off events. For 125446/125446 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 5933 event pairs, 130 based on Foata normal form. 6/1073 useless extension candidates. Maximal degree in co-relation 6423. Up to 943 conditions per place. [2024-06-14 11:25:13,083 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 168 selfloop transitions, 23 changer transitions 15/208 dead transitions. [2024-06-14 11:25:13,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 208 transitions, 2137 flow [2024-06-14 11:25:13,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:25:13,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:25:13,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 120 transitions. [2024-06-14 11:25:13,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-14 11:25:13,083 INFO L175 Difference]: Start difference. First operand has 301 places, 186 transitions, 1644 flow. Second operand 12 states and 120 transitions. [2024-06-14 11:25:13,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 208 transitions, 2137 flow [2024-06-14 11:25:13,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 208 transitions, 2067 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-14 11:25:13,590 INFO L231 Difference]: Finished difference. Result has 296 places, 184 transitions, 1596 flow [2024-06-14 11:25:13,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1574, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1596, PETRI_PLACES=296, PETRI_TRANSITIONS=184} [2024-06-14 11:25:13,591 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 265 predicate places. [2024-06-14 11:25:13,591 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 184 transitions, 1596 flow [2024-06-14 11:25:13,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:13,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:25:13,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:25:13,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-14 11:25:13,591 INFO L420 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:25:13,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:25:13,591 INFO L85 PathProgramCache]: Analyzing trace with hash -417518608, now seen corresponding path program 9 times [2024-06-14 11:25:13,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:25:13,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110263285] [2024-06-14 11:25:13,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:25:13,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:25:13,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:25:15,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:25:15,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:25:15,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110263285] [2024-06-14 11:25:15,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110263285] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:25:15,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:25:15,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:25:15,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256551111] [2024-06-14 11:25:15,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:25:15,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:25:15,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:25:15,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:25:15,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:25:15,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:25:15,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 184 transitions, 1596 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:15,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:25:15,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:25:15,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:25:15,660 INFO L124 PetriNetUnfolderBase]: 516/1041 cut-off events. [2024-06-14 11:25:15,660 INFO L125 PetriNetUnfolderBase]: For 125282/125282 co-relation queries the response was YES. [2024-06-14 11:25:15,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6417 conditions, 1041 events. 516/1041 cut-off events. For 125282/125282 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 5754 event pairs, 128 based on Foata normal form. 6/1047 useless extension candidates. Maximal degree in co-relation 6283. Up to 919 conditions per place. [2024-06-14 11:25:15,670 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 164 selfloop transitions, 23 changer transitions 12/201 dead transitions. [2024-06-14 11:25:15,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 201 transitions, 2048 flow [2024-06-14 11:25:15,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:25:15,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:25:15,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-14 11:25:15,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3210227272727273 [2024-06-14 11:25:15,670 INFO L175 Difference]: Start difference. First operand has 296 places, 184 transitions, 1596 flow. Second operand 11 states and 113 transitions. [2024-06-14 11:25:15,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 201 transitions, 2048 flow [2024-06-14 11:25:16,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 201 transitions, 1990 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-14 11:25:16,145 INFO L231 Difference]: Finished difference. Result has 292 places, 180 transitions, 1552 flow [2024-06-14 11:25:16,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1538, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1552, PETRI_PLACES=292, PETRI_TRANSITIONS=180} [2024-06-14 11:25:16,146 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 261 predicate places. [2024-06-14 11:25:16,146 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 180 transitions, 1552 flow [2024-06-14 11:25:16,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:16,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:25:16,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:25:16,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-14 11:25:16,146 INFO L420 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:25:16,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:25:16,146 INFO L85 PathProgramCache]: Analyzing trace with hash -356187258, now seen corresponding path program 10 times [2024-06-14 11:25:16,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:25:16,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472906362] [2024-06-14 11:25:16,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:25:16,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:25:16,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:25:17,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:25:17,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:25:17,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472906362] [2024-06-14 11:25:17,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472906362] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:25:17,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:25:17,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:25:17,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260834972] [2024-06-14 11:25:17,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:25:17,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:25:17,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:25:17,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:25:17,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:25:17,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:25:17,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 180 transitions, 1552 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:17,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:25:17,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:25:17,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:25:18,270 INFO L124 PetriNetUnfolderBase]: 505/1020 cut-off events. [2024-06-14 11:25:18,270 INFO L125 PetriNetUnfolderBase]: For 125266/125266 co-relation queries the response was YES. [2024-06-14 11:25:18,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6321 conditions, 1020 events. 505/1020 cut-off events. For 125266/125266 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 5598 event pairs, 125 based on Foata normal form. 6/1026 useless extension candidates. Maximal degree in co-relation 6189. Up to 887 conditions per place. [2024-06-14 11:25:18,279 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 158 selfloop transitions, 23 changer transitions 18/201 dead transitions. [2024-06-14 11:25:18,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 201 transitions, 2020 flow [2024-06-14 11:25:18,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:25:18,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:25:18,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 122 transitions. [2024-06-14 11:25:18,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3177083333333333 [2024-06-14 11:25:18,280 INFO L175 Difference]: Start difference. First operand has 292 places, 180 transitions, 1552 flow. Second operand 12 states and 122 transitions. [2024-06-14 11:25:18,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 201 transitions, 2020 flow [2024-06-14 11:25:18,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 201 transitions, 1964 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-14 11:25:18,727 INFO L231 Difference]: Finished difference. Result has 287 places, 175 transitions, 1502 flow [2024-06-14 11:25:18,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1496, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1502, PETRI_PLACES=287, PETRI_TRANSITIONS=175} [2024-06-14 11:25:18,728 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 256 predicate places. [2024-06-14 11:25:18,728 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 175 transitions, 1502 flow [2024-06-14 11:25:18,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:18,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:25:18,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:25:18,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-14 11:25:18,728 INFO L420 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:25:18,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:25:18,728 INFO L85 PathProgramCache]: Analyzing trace with hash -532809778, now seen corresponding path program 11 times [2024-06-14 11:25:18,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:25:18,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869412942] [2024-06-14 11:25:18,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:25:18,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:25:18,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:25:20,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:25:20,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:25:20,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869412942] [2024-06-14 11:25:20,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869412942] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:25:20,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:25:20,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:25:20,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270505286] [2024-06-14 11:25:20,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:25:20,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:25:20,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:25:20,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:25:20,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:25:20,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:25:20,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 175 transitions, 1502 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:20,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:25:20,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:25:20,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:25:21,191 INFO L124 PetriNetUnfolderBase]: 489/988 cut-off events. [2024-06-14 11:25:21,191 INFO L125 PetriNetUnfolderBase]: For 125091/125091 co-relation queries the response was YES. [2024-06-14 11:25:21,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6182 conditions, 988 events. 489/988 cut-off events. For 125091/125091 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 5355 event pairs, 114 based on Foata normal form. 6/994 useless extension candidates. Maximal degree in co-relation 6053. Up to 862 conditions per place. [2024-06-14 11:25:21,200 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 157 selfloop transitions, 18 changer transitions 18/195 dead transitions. [2024-06-14 11:25:21,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 195 transitions, 1940 flow [2024-06-14 11:25:21,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:25:21,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:25:21,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 120 transitions. [2024-06-14 11:25:21,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-14 11:25:21,201 INFO L175 Difference]: Start difference. First operand has 287 places, 175 transitions, 1502 flow. Second operand 12 states and 120 transitions. [2024-06-14 11:25:21,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 195 transitions, 1940 flow [2024-06-14 11:25:21,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 195 transitions, 1886 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 11:25:21,709 INFO L231 Difference]: Finished difference. Result has 280 places, 170 transitions, 1442 flow [2024-06-14 11:25:21,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1448, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1442, PETRI_PLACES=280, PETRI_TRANSITIONS=170} [2024-06-14 11:25:21,710 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 249 predicate places. [2024-06-14 11:25:21,710 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 170 transitions, 1442 flow [2024-06-14 11:25:21,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:21,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:25:21,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:25:21,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-14 11:25:21,710 INFO L420 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:25:21,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:25:21,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1192465240, now seen corresponding path program 12 times [2024-06-14 11:25:21,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:25:21,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209849073] [2024-06-14 11:25:21,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:25:21,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:25:21,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:25:23,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:25:23,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:25:23,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209849073] [2024-06-14 11:25:23,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209849073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:25:23,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:25:23,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:25:23,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251851152] [2024-06-14 11:25:23,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:25:23,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:25:23,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:25:23,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:25:23,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:25:23,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:25:23,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 170 transitions, 1442 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:23,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:25:23,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:25:23,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:25:24,088 INFO L124 PetriNetUnfolderBase]: 471/954 cut-off events. [2024-06-14 11:25:24,088 INFO L125 PetriNetUnfolderBase]: For 125031/125031 co-relation queries the response was YES. [2024-06-14 11:25:24,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6030 conditions, 954 events. 471/954 cut-off events. For 125031/125031 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5114 event pairs, 110 based on Foata normal form. 6/960 useless extension candidates. Maximal degree in co-relation 5904. Up to 825 conditions per place. [2024-06-14 11:25:24,095 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 150 selfloop transitions, 15 changer transitions 23/190 dead transitions. [2024-06-14 11:25:24,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 190 transitions, 1878 flow [2024-06-14 11:25:24,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:25:24,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:25:24,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 119 transitions. [2024-06-14 11:25:24,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3098958333333333 [2024-06-14 11:25:24,096 INFO L175 Difference]: Start difference. First operand has 280 places, 170 transitions, 1442 flow. Second operand 12 states and 119 transitions. [2024-06-14 11:25:24,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 190 transitions, 1878 flow [2024-06-14 11:25:24,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 190 transitions, 1832 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-14 11:25:24,580 INFO L231 Difference]: Finished difference. Result has 272 places, 161 transitions, 1329 flow [2024-06-14 11:25:24,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1396, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1329, PETRI_PLACES=272, PETRI_TRANSITIONS=161} [2024-06-14 11:25:24,580 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 241 predicate places. [2024-06-14 11:25:24,580 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 161 transitions, 1329 flow [2024-06-14 11:25:24,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:24,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:25:24,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:25:24,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-14 11:25:24,581 INFO L420 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:25:24,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:25:24,581 INFO L85 PathProgramCache]: Analyzing trace with hash -2039015364, now seen corresponding path program 13 times [2024-06-14 11:25:24,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:25:24,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763514510] [2024-06-14 11:25:24,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:25:24,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:25:24,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:25:26,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:25:26,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:25:26,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763514510] [2024-06-14 11:25:26,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763514510] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:25:26,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:25:26,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:25:26,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856716113] [2024-06-14 11:25:26,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:25:26,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:25:26,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:25:26,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:25:26,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:25:26,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:25:26,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 161 transitions, 1329 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:26,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:25:26,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:25:26,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:25:26,728 INFO L124 PetriNetUnfolderBase]: 435/878 cut-off events. [2024-06-14 11:25:26,729 INFO L125 PetriNetUnfolderBase]: For 102981/102981 co-relation queries the response was YES. [2024-06-14 11:25:26,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5212 conditions, 878 events. 435/878 cut-off events. For 102981/102981 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4621 event pairs, 99 based on Foata normal form. 6/884 useless extension candidates. Maximal degree in co-relation 5090. Up to 762 conditions per place. [2024-06-14 11:25:26,737 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 146 selfloop transitions, 20 changer transitions 12/180 dead transitions. [2024-06-14 11:25:26,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 180 transitions, 1751 flow [2024-06-14 11:25:26,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:25:26,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:25:26,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 117 transitions. [2024-06-14 11:25:26,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3046875 [2024-06-14 11:25:26,738 INFO L175 Difference]: Start difference. First operand has 272 places, 161 transitions, 1329 flow. Second operand 12 states and 117 transitions. [2024-06-14 11:25:26,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 180 transitions, 1751 flow [2024-06-14 11:25:27,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 180 transitions, 1698 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-14 11:25:27,037 INFO L231 Difference]: Finished difference. Result has 260 places, 158 transitions, 1293 flow [2024-06-14 11:25:27,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1276, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1293, PETRI_PLACES=260, PETRI_TRANSITIONS=158} [2024-06-14 11:25:27,038 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 229 predicate places. [2024-06-14 11:25:27,038 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 158 transitions, 1293 flow [2024-06-14 11:25:27,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:27,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:25:27,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:25:27,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-14 11:25:27,038 INFO L420 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:25:27,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:25:27,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1531669586, now seen corresponding path program 14 times [2024-06-14 11:25:27,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:25:27,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195555164] [2024-06-14 11:25:27,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:25:27,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:25:27,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:25:28,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:25:28,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:25:28,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195555164] [2024-06-14 11:25:28,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195555164] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:25:28,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:25:28,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:25:28,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702053825] [2024-06-14 11:25:28,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:25:28,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:25:28,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:25:28,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:25:28,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:25:28,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:25:28,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 158 transitions, 1293 flow. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:28,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:25:28,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:25:28,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:25:28,898 INFO L124 PetriNetUnfolderBase]: 425/860 cut-off events. [2024-06-14 11:25:28,898 INFO L125 PetriNetUnfolderBase]: For 102836/102836 co-relation queries the response was YES. [2024-06-14 11:25:28,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5119 conditions, 860 events. 425/860 cut-off events. For 102836/102836 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4476 event pairs, 97 based on Foata normal form. 6/866 useless extension candidates. Maximal degree in co-relation 5001. Up to 744 conditions per place. [2024-06-14 11:25:28,905 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 136 selfloop transitions, 14 changer transitions 25/177 dead transitions. [2024-06-14 11:25:28,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 177 transitions, 1701 flow [2024-06-14 11:25:28,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:25:28,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:25:28,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 116 transitions. [2024-06-14 11:25:28,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3020833333333333 [2024-06-14 11:25:28,906 INFO L175 Difference]: Start difference. First operand has 260 places, 158 transitions, 1293 flow. Second operand 12 states and 116 transitions. [2024-06-14 11:25:28,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 177 transitions, 1701 flow [2024-06-14 11:25:29,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 177 transitions, 1643 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 11:25:29,187 INFO L231 Difference]: Finished difference. Result has 255 places, 149 transitions, 1187 flow [2024-06-14 11:25:29,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1235, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1187, PETRI_PLACES=255, PETRI_TRANSITIONS=149} [2024-06-14 11:25:29,188 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 224 predicate places. [2024-06-14 11:25:29,188 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 149 transitions, 1187 flow [2024-06-14 11:25:29,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:29,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:25:29,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:25:29,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-14 11:25:29,188 INFO L420 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:25:29,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:25:29,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1114292710, now seen corresponding path program 15 times [2024-06-14 11:25:29,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:25:29,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360319549] [2024-06-14 11:25:29,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:25:29,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:25:29,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:25:30,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:25:30,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:25:30,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360319549] [2024-06-14 11:25:30,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360319549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:25:30,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:25:30,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:25:30,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919562259] [2024-06-14 11:25:30,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:25:30,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:25:30,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:25:30,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:25:30,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:25:30,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:25:30,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 149 transitions, 1187 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:30,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:25:30,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:25:30,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:25:31,076 INFO L124 PetriNetUnfolderBase]: 408/813 cut-off events. [2024-06-14 11:25:31,076 INFO L125 PetriNetUnfolderBase]: For 102626/102626 co-relation queries the response was YES. [2024-06-14 11:25:31,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4892 conditions, 813 events. 408/813 cut-off events. For 102626/102626 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4168 event pairs, 86 based on Foata normal form. 6/819 useless extension candidates. Maximal degree in co-relation 4776. Up to 710 conditions per place. [2024-06-14 11:25:31,081 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 131 selfloop transitions, 15 changer transitions 18/166 dead transitions. [2024-06-14 11:25:31,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 166 transitions, 1559 flow [2024-06-14 11:25:31,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:25:31,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:25:31,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 109 transitions. [2024-06-14 11:25:31,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3096590909090909 [2024-06-14 11:25:31,082 INFO L175 Difference]: Start difference. First operand has 255 places, 149 transitions, 1187 flow. Second operand 11 states and 109 transitions. [2024-06-14 11:25:31,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 166 transitions, 1559 flow [2024-06-14 11:25:31,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 166 transitions, 1473 flow, removed 6 selfloop flow, removed 15 redundant places. [2024-06-14 11:25:31,368 INFO L231 Difference]: Finished difference. Result has 237 places, 144 transitions, 1108 flow [2024-06-14 11:25:31,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1101, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1108, PETRI_PLACES=237, PETRI_TRANSITIONS=144} [2024-06-14 11:25:31,368 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 206 predicate places. [2024-06-14 11:25:31,368 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 144 transitions, 1108 flow [2024-06-14 11:25:31,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:31,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:25:31,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:25:31,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-14 11:25:31,368 INFO L420 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:25:31,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:25:31,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1467727138, now seen corresponding path program 16 times [2024-06-14 11:25:31,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:25:31,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722593740] [2024-06-14 11:25:31,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:25:31,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:25:31,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:25:33,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:25:33,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:25:33,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722593740] [2024-06-14 11:25:33,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722593740] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:25:33,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:25:33,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:25:33,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264356214] [2024-06-14 11:25:33,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:25:33,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:25:33,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:25:33,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:25:33,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:25:33,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:25:33,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 144 transitions, 1108 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:33,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:25:33,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:25:33,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:25:33,885 INFO L124 PetriNetUnfolderBase]: 390/779 cut-off events. [2024-06-14 11:25:33,885 INFO L125 PetriNetUnfolderBase]: For 102398/102398 co-relation queries the response was YES. [2024-06-14 11:25:33,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4746 conditions, 779 events. 390/779 cut-off events. For 102398/102398 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3958 event pairs, 80 based on Foata normal form. 6/785 useless extension candidates. Maximal degree in co-relation 4634. Up to 670 conditions per place. [2024-06-14 11:25:33,891 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 125 selfloop transitions, 18 changer transitions 16/161 dead transitions. [2024-06-14 11:25:33,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 161 transitions, 1478 flow [2024-06-14 11:25:33,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:25:33,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:25:33,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2024-06-14 11:25:33,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-14 11:25:33,892 INFO L175 Difference]: Start difference. First operand has 237 places, 144 transitions, 1108 flow. Second operand 11 states and 110 transitions. [2024-06-14 11:25:33,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 161 transitions, 1478 flow [2024-06-14 11:25:34,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 161 transitions, 1438 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-14 11:25:34,136 INFO L231 Difference]: Finished difference. Result has 229 places, 139 transitions, 1076 flow [2024-06-14 11:25:34,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1068, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1076, PETRI_PLACES=229, PETRI_TRANSITIONS=139} [2024-06-14 11:25:34,136 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 198 predicate places. [2024-06-14 11:25:34,137 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 139 transitions, 1076 flow [2024-06-14 11:25:34,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:34,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:25:34,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:25:34,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-14 11:25:34,137 INFO L420 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:25:34,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:25:34,137 INFO L85 PathProgramCache]: Analyzing trace with hash 44319008, now seen corresponding path program 17 times [2024-06-14 11:25:34,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:25:34,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503407294] [2024-06-14 11:25:34,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:25:34,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:25:34,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:25:36,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:25:36,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:25:36,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503407294] [2024-06-14 11:25:36,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503407294] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:25:36,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:25:36,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:25:36,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598964232] [2024-06-14 11:25:36,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:25:36,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:25:36,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:25:36,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:25:36,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:25:36,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:25:36,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 139 transitions, 1076 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:36,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:25:36,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:25:36,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:25:36,541 INFO L124 PetriNetUnfolderBase]: 374/751 cut-off events. [2024-06-14 11:25:36,541 INFO L125 PetriNetUnfolderBase]: For 93108/93108 co-relation queries the response was YES. [2024-06-14 11:25:36,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4578 conditions, 751 events. 374/751 cut-off events. For 93108/93108 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3772 event pairs, 78 based on Foata normal form. 6/757 useless extension candidates. Maximal degree in co-relation 4470. Up to 633 conditions per place. [2024-06-14 11:25:36,546 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 118 selfloop transitions, 22 changer transitions 12/154 dead transitions. [2024-06-14 11:25:36,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 154 transitions, 1430 flow [2024-06-14 11:25:36,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:25:36,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:25:36,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-14 11:25:36,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325 [2024-06-14 11:25:36,547 INFO L175 Difference]: Start difference. First operand has 229 places, 139 transitions, 1076 flow. Second operand 10 states and 104 transitions. [2024-06-14 11:25:36,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 154 transitions, 1430 flow [2024-06-14 11:25:36,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 154 transitions, 1386 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 11:25:36,742 INFO L231 Difference]: Finished difference. Result has 222 places, 134 transitions, 1038 flow [2024-06-14 11:25:36,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1032, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1038, PETRI_PLACES=222, PETRI_TRANSITIONS=134} [2024-06-14 11:25:36,742 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 191 predicate places. [2024-06-14 11:25:36,743 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 134 transitions, 1038 flow [2024-06-14 11:25:36,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:36,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:25:36,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:25:36,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-14 11:25:36,743 INFO L420 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:25:36,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:25:36,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1472368768, now seen corresponding path program 18 times [2024-06-14 11:25:36,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:25:36,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481095083] [2024-06-14 11:25:36,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:25:36,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:25:36,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:25:38,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:25:38,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:25:38,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481095083] [2024-06-14 11:25:38,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481095083] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:25:38,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:25:38,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:25:38,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541055210] [2024-06-14 11:25:38,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:25:38,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:25:38,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:25:38,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:25:38,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:25:38,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:25:38,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 134 transitions, 1038 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:38,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:25:38,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:25:38,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:25:38,702 INFO L124 PetriNetUnfolderBase]: 360/729 cut-off events. [2024-06-14 11:25:38,702 INFO L125 PetriNetUnfolderBase]: For 85066/85066 co-relation queries the response was YES. [2024-06-14 11:25:38,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4437 conditions, 729 events. 360/729 cut-off events. For 85066/85066 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3666 event pairs, 76 based on Foata normal form. 6/735 useless extension candidates. Maximal degree in co-relation 4332. Up to 605 conditions per place. [2024-06-14 11:25:38,707 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 112 selfloop transitions, 23 changer transitions 14/151 dead transitions. [2024-06-14 11:25:38,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 151 transitions, 1398 flow [2024-06-14 11:25:38,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:25:38,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:25:38,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-14 11:25:38,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3181818181818182 [2024-06-14 11:25:38,708 INFO L175 Difference]: Start difference. First operand has 222 places, 134 transitions, 1038 flow. Second operand 11 states and 112 transitions. [2024-06-14 11:25:38,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 151 transitions, 1398 flow [2024-06-14 11:25:38,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 151 transitions, 1348 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 11:25:38,893 INFO L231 Difference]: Finished difference. Result has 219 places, 130 transitions, 1002 flow [2024-06-14 11:25:38,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=988, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1002, PETRI_PLACES=219, PETRI_TRANSITIONS=130} [2024-06-14 11:25:38,894 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 188 predicate places. [2024-06-14 11:25:38,894 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 130 transitions, 1002 flow [2024-06-14 11:25:38,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:38,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:25:38,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:25:38,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-14 11:25:38,894 INFO L420 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:25:38,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:25:38,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1635386952, now seen corresponding path program 2 times [2024-06-14 11:25:38,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:25:38,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023257145] [2024-06-14 11:25:38,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:25:38,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:25:38,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:25:40,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:25:40,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:25:40,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023257145] [2024-06-14 11:25:40,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023257145] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:25:40,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:25:40,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:25:40,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914961416] [2024-06-14 11:25:40,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:25:40,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:25:40,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:25:40,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:25:40,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:25:40,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:25:40,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 130 transitions, 1002 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:40,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:25:40,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:25:40,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:25:40,561 INFO L124 PetriNetUnfolderBase]: 354/723 cut-off events. [2024-06-14 11:25:40,561 INFO L125 PetriNetUnfolderBase]: For 87031/87031 co-relation queries the response was YES. [2024-06-14 11:25:40,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4401 conditions, 723 events. 354/723 cut-off events. For 87031/87031 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3647 event pairs, 82 based on Foata normal form. 8/731 useless extension candidates. Maximal degree in co-relation 4298. Up to 598 conditions per place. [2024-06-14 11:25:40,566 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 108 selfloop transitions, 17 changer transitions 20/147 dead transitions. [2024-06-14 11:25:40,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 147 transitions, 1380 flow [2024-06-14 11:25:40,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:25:40,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:25:40,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-14 11:25:40,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3181818181818182 [2024-06-14 11:25:40,567 INFO L175 Difference]: Start difference. First operand has 219 places, 130 transitions, 1002 flow. Second operand 11 states and 112 transitions. [2024-06-14 11:25:40,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 147 transitions, 1380 flow [2024-06-14 11:25:40,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 147 transitions, 1330 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 11:25:40,767 INFO L231 Difference]: Finished difference. Result has 217 places, 120 transitions, 920 flow [2024-06-14 11:25:40,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=952, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=920, PETRI_PLACES=217, PETRI_TRANSITIONS=120} [2024-06-14 11:25:40,767 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 186 predicate places. [2024-06-14 11:25:40,768 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 120 transitions, 920 flow [2024-06-14 11:25:40,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:40,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:25:40,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:25:40,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-14 11:25:40,768 INFO L420 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:25:40,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:25:40,768 INFO L85 PathProgramCache]: Analyzing trace with hash -354134, now seen corresponding path program 19 times [2024-06-14 11:25:40,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:25:40,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575686896] [2024-06-14 11:25:40,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:25:40,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:25:40,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:25:42,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:25:42,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:25:42,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575686896] [2024-06-14 11:25:42,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575686896] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:25:42,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:25:42,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:25:42,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700162690] [2024-06-14 11:25:42,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:25:42,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:25:42,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:25:42,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:25:42,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:25:42,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:25:42,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 120 transitions, 920 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:42,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:25:42,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:25:42,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:25:42,570 INFO L124 PetriNetUnfolderBase]: 321/648 cut-off events. [2024-06-14 11:25:42,570 INFO L125 PetriNetUnfolderBase]: For 79879/79879 co-relation queries the response was YES. [2024-06-14 11:25:42,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4014 conditions, 648 events. 321/648 cut-off events. For 79879/79879 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3151 event pairs, 72 based on Foata normal form. 6/654 useless extension candidates. Maximal degree in co-relation 3912. Up to 563 conditions per place. [2024-06-14 11:25:42,574 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 106 selfloop transitions, 11 changer transitions 17/136 dead transitions. [2024-06-14 11:25:42,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 136 transitions, 1228 flow [2024-06-14 11:25:42,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:25:42,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:25:42,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 104 transitions. [2024-06-14 11:25:42,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29545454545454547 [2024-06-14 11:25:42,575 INFO L175 Difference]: Start difference. First operand has 217 places, 120 transitions, 920 flow. Second operand 11 states and 104 transitions. [2024-06-14 11:25:42,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 136 transitions, 1228 flow [2024-06-14 11:25:42,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 136 transitions, 1135 flow, removed 6 selfloop flow, removed 20 redundant places. [2024-06-14 11:25:42,735 INFO L231 Difference]: Finished difference. Result has 205 places, 115 transitions, 827 flow [2024-06-14 11:25:42,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=827, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=827, PETRI_PLACES=205, PETRI_TRANSITIONS=115} [2024-06-14 11:25:42,735 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 174 predicate places. [2024-06-14 11:25:42,735 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 115 transitions, 827 flow [2024-06-14 11:25:42,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:42,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:25:42,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:25:42,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-14 11:25:42,736 INFO L420 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:25:42,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:25:42,736 INFO L85 PathProgramCache]: Analyzing trace with hash 110468386, now seen corresponding path program 20 times [2024-06-14 11:25:42,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:25:42,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783413874] [2024-06-14 11:25:42,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:25:42,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:25:42,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:25:44,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:25:44,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:25:44,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783413874] [2024-06-14 11:25:44,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783413874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:25:44,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:25:44,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:25:44,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728274510] [2024-06-14 11:25:44,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:25:44,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:25:44,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:25:44,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:25:44,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:25:44,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:25:44,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 115 transitions, 827 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:44,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:25:44,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:25:44,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:25:45,145 INFO L124 PetriNetUnfolderBase]: 303/614 cut-off events. [2024-06-14 11:25:45,145 INFO L125 PetriNetUnfolderBase]: For 71594/71594 co-relation queries the response was YES. [2024-06-14 11:25:45,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3758 conditions, 614 events. 303/614 cut-off events. For 71594/71594 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2938 event pairs, 66 based on Foata normal form. 6/620 useless extension candidates. Maximal degree in co-relation 3661. Up to 526 conditions per place. [2024-06-14 11:25:45,149 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 101 selfloop transitions, 13 changer transitions 15/131 dead transitions. [2024-06-14 11:25:45,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 131 transitions, 1131 flow [2024-06-14 11:25:45,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:25:45,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:25:45,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 104 transitions. [2024-06-14 11:25:45,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29545454545454547 [2024-06-14 11:25:45,150 INFO L175 Difference]: Start difference. First operand has 205 places, 115 transitions, 827 flow. Second operand 11 states and 104 transitions. [2024-06-14 11:25:45,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 131 transitions, 1131 flow [2024-06-14 11:25:45,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 131 transitions, 1099 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-14 11:25:45,287 INFO L231 Difference]: Finished difference. Result has 197 places, 110 transitions, 793 flow [2024-06-14 11:25:45,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=795, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=793, PETRI_PLACES=197, PETRI_TRANSITIONS=110} [2024-06-14 11:25:45,287 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 166 predicate places. [2024-06-14 11:25:45,287 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 110 transitions, 793 flow [2024-06-14 11:25:45,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:45,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:25:45,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:25:45,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-14 11:25:45,288 INFO L420 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:25:45,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:25:45,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1123877888, now seen corresponding path program 21 times [2024-06-14 11:25:45,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:25:45,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307597715] [2024-06-14 11:25:45,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:25:45,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:25:45,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:25:46,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:25:46,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:25:46,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307597715] [2024-06-14 11:25:46,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307597715] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:25:46,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:25:46,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:25:46,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594525332] [2024-06-14 11:25:46,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:25:46,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:25:46,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:25:46,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:25:46,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:25:46,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:25:46,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 110 transitions, 793 flow. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:46,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:25:46,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:25:46,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:25:47,054 INFO L124 PetriNetUnfolderBase]: 287/586 cut-off events. [2024-06-14 11:25:47,054 INFO L125 PetriNetUnfolderBase]: For 63869/63869 co-relation queries the response was YES. [2024-06-14 11:25:47,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3586 conditions, 586 events. 287/586 cut-off events. For 63869/63869 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2756 event pairs, 65 based on Foata normal form. 6/592 useless extension candidates. Maximal degree in co-relation 3493. Up to 486 conditions per place. [2024-06-14 11:25:47,058 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 94 selfloop transitions, 19 changer transitions 12/127 dead transitions. [2024-06-14 11:25:47,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 127 transitions, 1105 flow [2024-06-14 11:25:47,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:25:47,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:25:47,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 107 transitions. [2024-06-14 11:25:47,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3039772727272727 [2024-06-14 11:25:47,058 INFO L175 Difference]: Start difference. First operand has 197 places, 110 transitions, 793 flow. Second operand 11 states and 107 transitions. [2024-06-14 11:25:47,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 127 transitions, 1105 flow [2024-06-14 11:25:47,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 127 transitions, 1071 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 11:25:47,159 INFO L231 Difference]: Finished difference. Result has 191 places, 106 transitions, 776 flow [2024-06-14 11:25:47,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=759, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=776, PETRI_PLACES=191, PETRI_TRANSITIONS=106} [2024-06-14 11:25:47,159 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 160 predicate places. [2024-06-14 11:25:47,159 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 106 transitions, 776 flow [2024-06-14 11:25:47,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:47,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:25:47,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:25:47,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2024-06-14 11:25:47,160 INFO L420 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:25:47,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:25:47,160 INFO L85 PathProgramCache]: Analyzing trace with hash 684815526, now seen corresponding path program 22 times [2024-06-14 11:25:47,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:25:47,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132149837] [2024-06-14 11:25:47,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:25:47,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:25:47,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:25:49,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:25:49,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:25:49,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132149837] [2024-06-14 11:25:49,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132149837] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:25:49,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:25:49,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:25:49,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887714997] [2024-06-14 11:25:49,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:25:49,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:25:49,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:25:49,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:25:49,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:25:49,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:25:49,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 106 transitions, 776 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:49,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:25:49,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:25:49,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:25:49,939 INFO L124 PetriNetUnfolderBase]: 275/566 cut-off events. [2024-06-14 11:25:49,939 INFO L125 PetriNetUnfolderBase]: For 58379/58379 co-relation queries the response was YES. [2024-06-14 11:25:49,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3461 conditions, 566 events. 275/566 cut-off events. For 58379/58379 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2668 event pairs, 62 based on Foata normal form. 6/572 useless extension candidates. Maximal degree in co-relation 3371. Up to 472 conditions per place. [2024-06-14 11:25:49,942 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 91 selfloop transitions, 16 changer transitions 13/122 dead transitions. [2024-06-14 11:25:49,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 122 transitions, 1064 flow [2024-06-14 11:25:49,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:25:49,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:25:49,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 104 transitions. [2024-06-14 11:25:49,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29545454545454547 [2024-06-14 11:25:49,943 INFO L175 Difference]: Start difference. First operand has 191 places, 106 transitions, 776 flow. Second operand 11 states and 104 transitions. [2024-06-14 11:25:49,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 122 transitions, 1064 flow [2024-06-14 11:25:50,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 122 transitions, 1018 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 11:25:50,044 INFO L231 Difference]: Finished difference. Result has 187 places, 101 transitions, 724 flow [2024-06-14 11:25:50,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=724, PETRI_PLACES=187, PETRI_TRANSITIONS=101} [2024-06-14 11:25:50,044 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 156 predicate places. [2024-06-14 11:25:50,044 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 101 transitions, 724 flow [2024-06-14 11:25:50,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:50,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:25:50,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:25:50,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2024-06-14 11:25:50,044 INFO L420 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:25:50,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:25:50,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1119881050, now seen corresponding path program 23 times [2024-06-14 11:25:50,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:25:50,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810970438] [2024-06-14 11:25:50,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:25:50,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:25:50,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:25:51,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:25:51,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:25:51,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810970438] [2024-06-14 11:25:51,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810970438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:25:51,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:25:51,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:25:51,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030422348] [2024-06-14 11:25:51,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:25:51,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:25:51,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:25:51,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:25:51,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:25:51,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:25:51,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 101 transitions, 724 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:51,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:25:51,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:25:51,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:25:51,982 INFO L124 PetriNetUnfolderBase]: 261/544 cut-off events. [2024-06-14 11:25:51,982 INFO L125 PetriNetUnfolderBase]: For 55478/55478 co-relation queries the response was YES. [2024-06-14 11:25:51,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3313 conditions, 544 events. 261/544 cut-off events. For 55478/55478 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2539 event pairs, 61 based on Foata normal form. 6/550 useless extension candidates. Maximal degree in co-relation 3225. Up to 444 conditions per place. [2024-06-14 11:25:51,985 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 85 selfloop transitions, 16 changer transitions 15/118 dead transitions. [2024-06-14 11:25:51,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 118 transitions, 1012 flow [2024-06-14 11:25:51,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:25:51,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:25:51,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-14 11:25:51,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30113636363636365 [2024-06-14 11:25:51,986 INFO L175 Difference]: Start difference. First operand has 187 places, 101 transitions, 724 flow. Second operand 11 states and 106 transitions. [2024-06-14 11:25:51,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 118 transitions, 1012 flow [2024-06-14 11:25:52,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 118 transitions, 974 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 11:25:52,083 INFO L231 Difference]: Finished difference. Result has 183 places, 96 transitions, 687 flow [2024-06-14 11:25:52,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=686, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=687, PETRI_PLACES=183, PETRI_TRANSITIONS=96} [2024-06-14 11:25:52,084 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 152 predicate places. [2024-06-14 11:25:52,084 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 96 transitions, 687 flow [2024-06-14 11:25:52,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:52,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:25:52,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:25:52,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2024-06-14 11:25:52,084 INFO L420 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:25:52,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:25:52,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1148806794, now seen corresponding path program 24 times [2024-06-14 11:25:52,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:25:52,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360618246] [2024-06-14 11:25:52,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:25:52,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:25:52,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:25:54,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:25:54,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:25:54,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360618246] [2024-06-14 11:25:54,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360618246] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:25:54,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:25:54,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:25:54,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027592150] [2024-06-14 11:25:54,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:25:54,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:25:54,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:25:54,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:25:54,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:25:54,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:25:54,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 96 transitions, 687 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:54,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:25:54,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:25:54,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:25:54,694 INFO L124 PetriNetUnfolderBase]: 251/530 cut-off events. [2024-06-14 11:25:54,695 INFO L125 PetriNetUnfolderBase]: For 62708/62708 co-relation queries the response was YES. [2024-06-14 11:25:54,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3065 conditions, 530 events. 251/530 cut-off events. For 62708/62708 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2486 event pairs, 63 based on Foata normal form. 14/544 useless extension candidates. Maximal degree in co-relation 2979. Up to 390 conditions per place. [2024-06-14 11:25:54,698 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 72 selfloop transitions, 7 changer transitions 33/114 dead transitions. [2024-06-14 11:25:54,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 114 transitions, 997 flow [2024-06-14 11:25:54,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:25:54,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:25:54,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 109 transitions. [2024-06-14 11:25:54,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3096590909090909 [2024-06-14 11:25:54,699 INFO L175 Difference]: Start difference. First operand has 183 places, 96 transitions, 687 flow. Second operand 11 states and 109 transitions. [2024-06-14 11:25:54,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 114 transitions, 997 flow [2024-06-14 11:25:54,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 114 transitions, 953 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-14 11:25:54,781 INFO L231 Difference]: Finished difference. Result has 178 places, 78 transitions, 533 flow [2024-06-14 11:25:54,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=645, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=533, PETRI_PLACES=178, PETRI_TRANSITIONS=78} [2024-06-14 11:25:54,781 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 147 predicate places. [2024-06-14 11:25:54,781 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 78 transitions, 533 flow [2024-06-14 11:25:54,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:54,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:25:54,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:25:54,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2024-06-14 11:25:54,782 INFO L420 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:25:54,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:25:54,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1897764566, now seen corresponding path program 25 times [2024-06-14 11:25:54,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:25:54,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051696559] [2024-06-14 11:25:54,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:25:54,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:25:54,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:25:56,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:25:56,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:25:56,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051696559] [2024-06-14 11:25:56,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051696559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:25:56,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:25:56,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:25:56,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147707200] [2024-06-14 11:25:56,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:25:56,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:25:56,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:25:56,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:25:56,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:25:56,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:25:56,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 78 transitions, 533 flow. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:56,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:25:56,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:25:56,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:25:56,614 INFO L124 PetriNetUnfolderBase]: 204/433 cut-off events. [2024-06-14 11:25:56,614 INFO L125 PetriNetUnfolderBase]: For 44831/44831 co-relation queries the response was YES. [2024-06-14 11:25:56,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2601 conditions, 433 events. 204/433 cut-off events. For 44831/44831 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1869 event pairs, 55 based on Foata normal form. 6/439 useless extension candidates. Maximal degree in co-relation 2517. Up to 350 conditions per place. [2024-06-14 11:25:56,617 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 65 selfloop transitions, 9 changer transitions 18/94 dead transitions. [2024-06-14 11:25:56,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 94 transitions, 763 flow [2024-06-14 11:25:56,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:25:56,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:25:56,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 102 transitions. [2024-06-14 11:25:56,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2897727272727273 [2024-06-14 11:25:56,617 INFO L175 Difference]: Start difference. First operand has 178 places, 78 transitions, 533 flow. Second operand 11 states and 102 transitions. [2024-06-14 11:25:56,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 94 transitions, 763 flow [2024-06-14 11:25:56,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 94 transitions, 686 flow, removed 18 selfloop flow, removed 20 redundant places. [2024-06-14 11:25:56,678 INFO L231 Difference]: Finished difference. Result has 152 places, 72 transitions, 452 flow [2024-06-14 11:25:56,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=452, PETRI_PLACES=152, PETRI_TRANSITIONS=72} [2024-06-14 11:25:56,678 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 121 predicate places. [2024-06-14 11:25:56,678 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 72 transitions, 452 flow [2024-06-14 11:25:56,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:56,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:25:56,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:25:56,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2024-06-14 11:25:56,679 INFO L420 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:25:56,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:25:56,679 INFO L85 PathProgramCache]: Analyzing trace with hash 991581274, now seen corresponding path program 26 times [2024-06-14 11:25:56,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:25:56,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681691796] [2024-06-14 11:25:56,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:25:56,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:25:56,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:25:58,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:25:58,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:25:58,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681691796] [2024-06-14 11:25:58,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681691796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:25:58,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:25:58,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:25:58,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025011158] [2024-06-14 11:25:58,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:25:58,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:25:58,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:25:58,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:25:58,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:25:58,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:25:58,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 72 transitions, 452 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:58,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:25:58,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:25:58,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:25:58,925 INFO L124 PetriNetUnfolderBase]: 186/399 cut-off events. [2024-06-14 11:25:58,925 INFO L125 PetriNetUnfolderBase]: For 30853/30853 co-relation queries the response was YES. [2024-06-14 11:25:58,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2217 conditions, 399 events. 186/399 cut-off events. For 30853/30853 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1693 event pairs, 61 based on Foata normal form. 6/405 useless extension candidates. Maximal degree in co-relation 2146. Up to 306 conditions per place. [2024-06-14 11:25:58,927 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 56 selfloop transitions, 14 changer transitions 12/84 dead transitions. [2024-06-14 11:25:58,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 84 transitions, 650 flow [2024-06-14 11:25:58,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:25:58,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:25:58,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 98 transitions. [2024-06-14 11:25:58,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30625 [2024-06-14 11:25:58,928 INFO L175 Difference]: Start difference. First operand has 152 places, 72 transitions, 452 flow. Second operand 10 states and 98 transitions. [2024-06-14 11:25:58,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 84 transitions, 650 flow [2024-06-14 11:25:58,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 84 transitions, 620 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-14 11:25:58,970 INFO L231 Difference]: Finished difference. Result has 143 places, 66 transitions, 424 flow [2024-06-14 11:25:58,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=424, PETRI_PLACES=143, PETRI_TRANSITIONS=66} [2024-06-14 11:25:58,970 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 112 predicate places. [2024-06-14 11:25:58,970 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 66 transitions, 424 flow [2024-06-14 11:25:58,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:58,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:25:58,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:25:58,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2024-06-14 11:25:58,970 INFO L420 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:25:58,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:25:58,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1318969436, now seen corresponding path program 3 times [2024-06-14 11:25:58,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:25:58,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204839] [2024-06-14 11:25:58,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:25:58,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:25:58,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:26:00,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:26:00,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:26:00,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204839] [2024-06-14 11:26:00,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204839] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:26:00,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:26:00,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:26:00,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156986241] [2024-06-14 11:26:00,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:26:00,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:26:00,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:26:00,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:26:00,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:26:00,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:26:00,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 66 transitions, 424 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:00,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:26:00,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:26:00,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:26:01,228 INFO L124 PetriNetUnfolderBase]: 156/337 cut-off events. [2024-06-14 11:26:01,228 INFO L125 PetriNetUnfolderBase]: For 20080/20080 co-relation queries the response was YES. [2024-06-14 11:26:01,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1597 conditions, 337 events. 156/337 cut-off events. For 20080/20080 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1344 event pairs, 47 based on Foata normal form. 8/345 useless extension candidates. Maximal degree in co-relation 1530. Up to 250 conditions per place. [2024-06-14 11:26:01,229 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 54 selfloop transitions, 15 changer transitions 6/77 dead transitions. [2024-06-14 11:26:01,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 77 transitions, 604 flow [2024-06-14 11:26:01,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:26:01,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:26:01,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 96 transitions. [2024-06-14 11:26:01,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3 [2024-06-14 11:26:01,230 INFO L175 Difference]: Start difference. First operand has 143 places, 66 transitions, 424 flow. Second operand 10 states and 96 transitions. [2024-06-14 11:26:01,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 77 transitions, 604 flow [2024-06-14 11:26:01,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 77 transitions, 554 flow, removed 11 selfloop flow, removed 12 redundant places. [2024-06-14 11:26:01,250 INFO L231 Difference]: Finished difference. Result has 135 places, 62 transitions, 385 flow [2024-06-14 11:26:01,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=385, PETRI_PLACES=135, PETRI_TRANSITIONS=62} [2024-06-14 11:26:01,250 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 104 predicate places. [2024-06-14 11:26:01,251 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 62 transitions, 385 flow [2024-06-14 11:26:01,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:01,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:26:01,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:26:01,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2024-06-14 11:26:01,251 INFO L420 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:26:01,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:26:01,251 INFO L85 PathProgramCache]: Analyzing trace with hash 763507144, now seen corresponding path program 27 times [2024-06-14 11:26:01,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:26:01,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22754596] [2024-06-14 11:26:01,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:26:01,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:26:01,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:26:02,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:26:02,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:26:02,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22754596] [2024-06-14 11:26:02,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22754596] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:26:02,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:26:02,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:26:02,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424459496] [2024-06-14 11:26:02,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:26:02,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:26:02,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:26:02,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:26:02,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:26:02,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:26:02,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 62 transitions, 385 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:02,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:26:02,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:26:02,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:26:03,049 INFO L124 PetriNetUnfolderBase]: 147/322 cut-off events. [2024-06-14 11:26:03,050 INFO L125 PetriNetUnfolderBase]: For 15063/15063 co-relation queries the response was YES. [2024-06-14 11:26:03,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1463 conditions, 322 events. 147/322 cut-off events. For 15063/15063 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1265 event pairs, 41 based on Foata normal form. 6/328 useless extension candidates. Maximal degree in co-relation 1400. Up to 241 conditions per place. [2024-06-14 11:26:03,051 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 51 selfloop transitions, 12 changer transitions 11/76 dead transitions. [2024-06-14 11:26:03,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 76 transitions, 567 flow [2024-06-14 11:26:03,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:26:03,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:26:03,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 101 transitions. [2024-06-14 11:26:03,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2869318181818182 [2024-06-14 11:26:03,052 INFO L175 Difference]: Start difference. First operand has 135 places, 62 transitions, 385 flow. Second operand 11 states and 101 transitions. [2024-06-14 11:26:03,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 76 transitions, 567 flow [2024-06-14 11:26:03,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 76 transitions, 518 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-14 11:26:03,069 INFO L231 Difference]: Finished difference. Result has 132 places, 59 transitions, 351 flow [2024-06-14 11:26:03,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=351, PETRI_PLACES=132, PETRI_TRANSITIONS=59} [2024-06-14 11:26:03,069 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 101 predicate places. [2024-06-14 11:26:03,069 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 59 transitions, 351 flow [2024-06-14 11:26:03,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:03,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:26:03,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:26:03,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2024-06-14 11:26:03,070 INFO L420 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:26:03,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:26:03,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1460191104, now seen corresponding path program 28 times [2024-06-14 11:26:03,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:26:03,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5122255] [2024-06-14 11:26:03,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:26:03,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:26:03,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:26:04,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:26:04,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:26:04,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5122255] [2024-06-14 11:26:04,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5122255] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:26:04,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:26:04,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:26:04,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852977590] [2024-06-14 11:26:04,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:26:04,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:26:04,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:26:04,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:26:04,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:26:04,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:26:04,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 59 transitions, 351 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:04,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:26:04,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:26:04,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:26:04,846 INFO L124 PetriNetUnfolderBase]: 137/304 cut-off events. [2024-06-14 11:26:04,847 INFO L125 PetriNetUnfolderBase]: For 14387/14387 co-relation queries the response was YES. [2024-06-14 11:26:04,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1357 conditions, 304 events. 137/304 cut-off events. For 14387/14387 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1164 event pairs, 47 based on Foata normal form. 6/310 useless extension candidates. Maximal degree in co-relation 1296. Up to 228 conditions per place. [2024-06-14 11:26:04,848 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 42 selfloop transitions, 3 changer transitions 23/70 dead transitions. [2024-06-14 11:26:04,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 70 transitions, 513 flow [2024-06-14 11:26:04,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:26:04,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:26:04,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 92 transitions. [2024-06-14 11:26:04,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2875 [2024-06-14 11:26:04,849 INFO L175 Difference]: Start difference. First operand has 132 places, 59 transitions, 351 flow. Second operand 10 states and 92 transitions. [2024-06-14 11:26:04,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 70 transitions, 513 flow [2024-06-14 11:26:04,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 70 transitions, 483 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 11:26:04,864 INFO L231 Difference]: Finished difference. Result has 127 places, 46 transitions, 263 flow [2024-06-14 11:26:04,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=263, PETRI_PLACES=127, PETRI_TRANSITIONS=46} [2024-06-14 11:26:04,864 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 96 predicate places. [2024-06-14 11:26:04,864 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 46 transitions, 263 flow [2024-06-14 11:26:04,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:04,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:26:04,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:26:04,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2024-06-14 11:26:04,865 INFO L420 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:26:04,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:26:04,865 INFO L85 PathProgramCache]: Analyzing trace with hash -29414328, now seen corresponding path program 29 times [2024-06-14 11:26:04,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:26:04,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062092730] [2024-06-14 11:26:04,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:26:04,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:26:04,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:26:07,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:26:07,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:26:07,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062092730] [2024-06-14 11:26:07,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062092730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:26:07,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:26:07,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:26:07,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033094882] [2024-06-14 11:26:07,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:26:07,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:26:07,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:26:07,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:26:07,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:26:07,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:26:07,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 46 transitions, 263 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:07,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:26:07,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:26:07,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:26:07,459 INFO L124 PetriNetUnfolderBase]: 118/260 cut-off events. [2024-06-14 11:26:07,459 INFO L125 PetriNetUnfolderBase]: For 12931/12931 co-relation queries the response was YES. [2024-06-14 11:26:07,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1181 conditions, 260 events. 118/260 cut-off events. For 12931/12931 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 941 event pairs, 37 based on Foata normal form. 6/266 useless extension candidates. Maximal degree in co-relation 1122. Up to 181 conditions per place. [2024-06-14 11:26:07,460 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 37 selfloop transitions, 8 changer transitions 15/62 dead transitions. [2024-06-14 11:26:07,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 62 transitions, 423 flow [2024-06-14 11:26:07,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:26:07,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:26:07,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 103 transitions. [2024-06-14 11:26:07,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29261363636363635 [2024-06-14 11:26:07,461 INFO L175 Difference]: Start difference. First operand has 127 places, 46 transitions, 263 flow. Second operand 11 states and 103 transitions. [2024-06-14 11:26:07,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 62 transitions, 423 flow [2024-06-14 11:26:07,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 62 transitions, 383 flow, removed 15 selfloop flow, removed 17 redundant places. [2024-06-14 11:26:07,470 INFO L231 Difference]: Finished difference. Result has 104 places, 41 transitions, 225 flow [2024-06-14 11:26:07,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=225, PETRI_PLACES=104, PETRI_TRANSITIONS=41} [2024-06-14 11:26:07,470 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 73 predicate places. [2024-06-14 11:26:07,470 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 41 transitions, 225 flow [2024-06-14 11:26:07,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:07,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:26:07,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:26:07,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2024-06-14 11:26:07,471 INFO L420 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:26:07,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:26:07,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1912802522, now seen corresponding path program 30 times [2024-06-14 11:26:07,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:26:07,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146814355] [2024-06-14 11:26:07,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:26:07,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:26:07,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:26:09,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:26:09,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:26:09,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146814355] [2024-06-14 11:26:09,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146814355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:26:09,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:26:09,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:26:09,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751197236] [2024-06-14 11:26:09,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:26:09,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:26:09,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:26:09,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:26:09,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:26:09,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:26:09,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 41 transitions, 225 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:09,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:26:09,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:26:09,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:26:09,513 INFO L124 PetriNetUnfolderBase]: 105/233 cut-off events. [2024-06-14 11:26:09,514 INFO L125 PetriNetUnfolderBase]: For 7014/7014 co-relation queries the response was YES. [2024-06-14 11:26:09,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 976 conditions, 233 events. 105/233 cut-off events. For 7014/7014 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 808 event pairs, 35 based on Foata normal form. 6/239 useless extension candidates. Maximal degree in co-relation 928. Up to 163 conditions per place. [2024-06-14 11:26:09,514 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 33 selfloop transitions, 7 changer transitions 14/56 dead transitions. [2024-06-14 11:26:09,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 56 transitions, 365 flow [2024-06-14 11:26:09,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:26:09,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:26:09,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 100 transitions. [2024-06-14 11:26:09,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2840909090909091 [2024-06-14 11:26:09,516 INFO L175 Difference]: Start difference. First operand has 104 places, 41 transitions, 225 flow. Second operand 11 states and 100 transitions. [2024-06-14 11:26:09,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 56 transitions, 365 flow [2024-06-14 11:26:09,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 56 transitions, 339 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-14 11:26:09,521 INFO L231 Difference]: Finished difference. Result has 96 places, 37 transitions, 198 flow [2024-06-14 11:26:09,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=198, PETRI_PLACES=96, PETRI_TRANSITIONS=37} [2024-06-14 11:26:09,521 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 65 predicate places. [2024-06-14 11:26:09,521 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 37 transitions, 198 flow [2024-06-14 11:26:09,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:09,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:26:09,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:26:09,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2024-06-14 11:26:09,521 INFO L420 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:26:09,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:26:09,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1917271172, now seen corresponding path program 31 times [2024-06-14 11:26:09,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:26:09,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463007492] [2024-06-14 11:26:09,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:26:09,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:26:09,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:26:11,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:26:11,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:26:11,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463007492] [2024-06-14 11:26:11,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463007492] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:26:11,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:26:11,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:26:11,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223255016] [2024-06-14 11:26:11,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:26:11,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:26:11,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:26:11,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:26:11,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:26:11,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:26:11,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 37 transitions, 198 flow. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:11,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:26:11,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:26:11,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:26:11,465 INFO L124 PetriNetUnfolderBase]: 91/207 cut-off events. [2024-06-14 11:26:11,465 INFO L125 PetriNetUnfolderBase]: For 5142/5142 co-relation queries the response was YES. [2024-06-14 11:26:11,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 852 conditions, 207 events. 91/207 cut-off events. For 5142/5142 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 684 event pairs, 31 based on Foata normal form. 6/213 useless extension candidates. Maximal degree in co-relation 808. Up to 137 conditions per place. [2024-06-14 11:26:11,466 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 27 selfloop transitions, 4 changer transitions 19/52 dead transitions. [2024-06-14 11:26:11,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 52 transitions, 330 flow [2024-06-14 11:26:11,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:26:11,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:26:11,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 98 transitions. [2024-06-14 11:26:11,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2784090909090909 [2024-06-14 11:26:11,466 INFO L175 Difference]: Start difference. First operand has 96 places, 37 transitions, 198 flow. Second operand 11 states and 98 transitions. [2024-06-14 11:26:11,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 52 transitions, 330 flow [2024-06-14 11:26:11,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 52 transitions, 308 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 11:26:11,470 INFO L231 Difference]: Finished difference. Result has 90 places, 31 transitions, 159 flow [2024-06-14 11:26:11,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=159, PETRI_PLACES=90, PETRI_TRANSITIONS=31} [2024-06-14 11:26:11,471 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 59 predicate places. [2024-06-14 11:26:11,471 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 31 transitions, 159 flow [2024-06-14 11:26:11,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:11,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:26:11,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:26:11,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2024-06-14 11:26:11,471 INFO L420 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:26:11,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:26:11,471 INFO L85 PathProgramCache]: Analyzing trace with hash 630632478, now seen corresponding path program 32 times [2024-06-14 11:26:11,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:26:11,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507327795] [2024-06-14 11:26:11,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:26:11,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:26:11,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:26:12,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:26:12,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:26:12,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507327795] [2024-06-14 11:26:12,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507327795] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:26:12,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:26:12,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:26:12,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449249852] [2024-06-14 11:26:12,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:26:12,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:26:12,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:26:12,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:26:12,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:26:12,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:26:12,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 31 transitions, 159 flow. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:12,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:26:12,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:26:12,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:26:12,941 INFO L124 PetriNetUnfolderBase]: 74/172 cut-off events. [2024-06-14 11:26:12,941 INFO L125 PetriNetUnfolderBase]: For 3926/3926 co-relation queries the response was YES. [2024-06-14 11:26:12,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 715 conditions, 172 events. 74/172 cut-off events. For 3926/3926 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 531 event pairs, 29 based on Foata normal form. 6/178 useless extension candidates. Maximal degree in co-relation 674. Up to 95 conditions per place. [2024-06-14 11:26:12,942 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 21 selfloop transitions, 10 changer transitions 11/44 dead transitions. [2024-06-14 11:26:12,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 44 transitions, 271 flow [2024-06-14 11:26:12,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:26:12,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:26:12,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 94 transitions. [2024-06-14 11:26:12,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.26704545454545453 [2024-06-14 11:26:12,946 INFO L175 Difference]: Start difference. First operand has 90 places, 31 transitions, 159 flow. Second operand 11 states and 94 transitions. [2024-06-14 11:26:12,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 44 transitions, 271 flow [2024-06-14 11:26:12,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 44 transitions, 251 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-14 11:26:12,949 INFO L231 Difference]: Finished difference. Result has 80 places, 28 transitions, 148 flow [2024-06-14 11:26:12,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=148, PETRI_PLACES=80, PETRI_TRANSITIONS=28} [2024-06-14 11:26:12,949 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 49 predicate places. [2024-06-14 11:26:12,949 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 28 transitions, 148 flow [2024-06-14 11:26:12,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:12,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:26:12,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:26:12,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2024-06-14 11:26:12,949 INFO L420 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:26:12,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:26:12,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1502753300, now seen corresponding path program 33 times [2024-06-14 11:26:12,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:26:12,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694024147] [2024-06-14 11:26:12,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:26:12,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:26:12,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:26:14,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:26:14,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:26:14,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694024147] [2024-06-14 11:26:14,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694024147] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:26:14,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:26:14,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:26:14,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582636505] [2024-06-14 11:26:14,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:26:14,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:26:14,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:26:14,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:26:14,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:26:14,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:26:14,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 28 transitions, 148 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:14,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:26:14,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:26:14,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:26:14,307 INFO L124 PetriNetUnfolderBase]: 49/121 cut-off events. [2024-06-14 11:26:14,307 INFO L125 PetriNetUnfolderBase]: For 1532/1532 co-relation queries the response was YES. [2024-06-14 11:26:14,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 446 conditions, 121 events. 49/121 cut-off events. For 1532/1532 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 295 event pairs, 5 based on Foata normal form. 6/127 useless extension candidates. Maximal degree in co-relation 410. Up to 38 conditions per place. [2024-06-14 11:26:14,307 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 20 selfloop transitions, 8 changer transitions 11/41 dead transitions. [2024-06-14 11:26:14,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 41 transitions, 254 flow [2024-06-14 11:26:14,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:26:14,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:26:14,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 92 transitions. [2024-06-14 11:26:14,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.26136363636363635 [2024-06-14 11:26:14,308 INFO L175 Difference]: Start difference. First operand has 80 places, 28 transitions, 148 flow. Second operand 11 states and 92 transitions. [2024-06-14 11:26:14,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 41 transitions, 254 flow [2024-06-14 11:26:14,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 41 transitions, 228 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 11:26:14,309 INFO L231 Difference]: Finished difference. Result has 76 places, 23 transitions, 117 flow [2024-06-14 11:26:14,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=117, PETRI_PLACES=76, PETRI_TRANSITIONS=23} [2024-06-14 11:26:14,317 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 45 predicate places. [2024-06-14 11:26:14,318 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 23 transitions, 117 flow [2024-06-14 11:26:14,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:14,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:26:14,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:26:14,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2024-06-14 11:26:14,318 INFO L420 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:26:14,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:26:14,318 INFO L85 PathProgramCache]: Analyzing trace with hash -38398246, now seen corresponding path program 34 times [2024-06-14 11:26:14,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:26:14,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324651447] [2024-06-14 11:26:14,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:26:14,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:26:14,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:26:15,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:26:15,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:26:15,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324651447] [2024-06-14 11:26:15,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324651447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:26:15,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:26:15,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:26:15,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711799930] [2024-06-14 11:26:15,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:26:15,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:26:15,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:26:15,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:26:15,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:26:16,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 11:26:16,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 23 transitions, 117 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:16,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:26:16,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 11:26:16,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:26:16,156 INFO L124 PetriNetUnfolderBase]: 21/61 cut-off events. [2024-06-14 11:26:16,156 INFO L125 PetriNetUnfolderBase]: For 594/594 co-relation queries the response was YES. [2024-06-14 11:26:16,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202 conditions, 61 events. 21/61 cut-off events. For 594/594 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 76 event pairs, 1 based on Foata normal form. 6/67 useless extension candidates. Maximal degree in co-relation 168. Up to 24 conditions per place. [2024-06-14 11:26:16,156 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 0 selfloop transitions, 0 changer transitions 30/30 dead transitions. [2024-06-14 11:26:16,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 30 transitions, 159 flow [2024-06-14 11:26:16,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:26:16,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:26:16,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 84 transitions. [2024-06-14 11:26:16,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.23863636363636365 [2024-06-14 11:26:16,157 INFO L175 Difference]: Start difference. First operand has 76 places, 23 transitions, 117 flow. Second operand 11 states and 84 transitions. [2024-06-14 11:26:16,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 30 transitions, 159 flow [2024-06-14 11:26:16,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 30 transitions, 123 flow, removed 1 selfloop flow, removed 18 redundant places. [2024-06-14 11:26:16,157 INFO L231 Difference]: Finished difference. Result has 61 places, 0 transitions, 0 flow [2024-06-14 11:26:16,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=61, PETRI_TRANSITIONS=0} [2024-06-14 11:26:16,158 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 30 predicate places. [2024-06-14 11:26:16,158 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 0 transitions, 0 flow [2024-06-14 11:26:16,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:16,160 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-14 11:26:16,161 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-14 11:26:16,161 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-14 11:26:16,161 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-14 11:26:16,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2024-06-14 11:26:16,168 INFO L445 BasicCegarLoop]: Path program histogram: [41, 34, 28, 24, 17, 14, 11, 8, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:26:16,170 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-14 11:26:16,170 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-14 11:26:16,173 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-14 11:26:16,173 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-14 11:26:16,174 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.06 11:26:16 BasicIcfg [2024-06-14 11:26:16,174 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-14 11:26:16,174 INFO L158 Benchmark]: Toolchain (without parser) took 465602.69ms. Allocated memory was 151.0MB in the beginning and 2.2GB in the end (delta: 2.0GB). Free memory was 70.4MB in the beginning and 941.9MB in the end (delta: -871.5MB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2024-06-14 11:26:16,174 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 151.0MB. Free memory is still 102.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 11:26:16,174 INFO L158 Benchmark]: Witness Parser took 0.16ms. Allocated memory is still 151.0MB. Free memory was 76.0MB in the beginning and 75.8MB in the end (delta: 182.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-14 11:26:16,175 INFO L158 Benchmark]: CACSL2BoogieTranslator took 538.32ms. Allocated memory is still 151.0MB. Free memory was 70.2MB in the beginning and 95.2MB in the end (delta: -25.0MB). Peak memory consumption was 15.6MB. Max. memory is 16.1GB. [2024-06-14 11:26:16,175 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.24ms. Allocated memory is still 151.0MB. Free memory was 95.2MB in the beginning and 92.3MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-14 11:26:16,175 INFO L158 Benchmark]: Boogie Preprocessor took 53.49ms. Allocated memory is still 151.0MB. Free memory was 92.3MB in the beginning and 88.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-14 11:26:16,175 INFO L158 Benchmark]: RCFGBuilder took 653.52ms. Allocated memory was 151.0MB in the beginning and 216.0MB in the end (delta: 65.0MB). Free memory was 88.1MB in the beginning and 154.7MB in the end (delta: -66.6MB). Peak memory consumption was 47.3MB. Max. memory is 16.1GB. [2024-06-14 11:26:16,175 INFO L158 Benchmark]: TraceAbstraction took 464283.65ms. Allocated memory was 216.0MB in the beginning and 2.2GB in the end (delta: 2.0GB). Free memory was 154.7MB in the beginning and 941.9MB in the end (delta: -787.2MB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2024-06-14 11:26:16,176 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 151.0MB. Free memory is still 102.7MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.16ms. Allocated memory is still 151.0MB. Free memory was 76.0MB in the beginning and 75.8MB in the end (delta: 182.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 538.32ms. Allocated memory is still 151.0MB. Free memory was 70.2MB in the beginning and 95.2MB in the end (delta: -25.0MB). Peak memory consumption was 15.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.24ms. Allocated memory is still 151.0MB. Free memory was 95.2MB in the beginning and 92.3MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.49ms. Allocated memory is still 151.0MB. Free memory was 92.3MB in the beginning and 88.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 653.52ms. Allocated memory was 151.0MB in the beginning and 216.0MB in the end (delta: 65.0MB). Free memory was 88.1MB in the beginning and 154.7MB in the end (delta: -66.6MB). Peak memory consumption was 47.3MB. Max. memory is 16.1GB. * TraceAbstraction took 464283.65ms. Allocated memory was 216.0MB in the beginning and 2.2GB in the end (delta: 2.0GB). Free memory was 154.7MB in the beginning and 941.9MB in the end (delta: -787.2MB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 829]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 830]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 51 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 464.2s, OverallIterations: 234, TraceHistogramMax: 1, PathProgramHistogramMax: 41, EmptinessCheckTime: 0.0s, AutomataDifference: 202.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12200 SdHoareTripleChecker+Valid, 57.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10654 mSDsluCounter, 7772 SdHoareTripleChecker+Invalid, 49.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6333 mSDsCounter, 2814 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 94707 IncrementalHoareTripleChecker+Invalid, 97521 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2814 mSolverCounterUnsat, 1439 mSDtfsCounter, 94707 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2701 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2685 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5567 ImplicationChecksByTransitivity, 70.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4192occurred in iteration=140, InterpolantAutomatonStates: 2294, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 258.2s InterpolantComputationTime, 4184 NumberOfCodeBlocks, 4184 NumberOfCodeBlocksAsserted, 234 NumberOfCheckSat, 3950 ConstructedInterpolants, 0 QuantifiedInterpolants, 178141 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 234 InterpolantComputations, 234 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-14 11:26:16,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE