./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi007_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/rfi007_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/rfi007_tso.i ./goblint.2024-05-21_14-57-05.files/protection/rfi007_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 12:44:23,024 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-14 12:44:23,086 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-14 12:44:23,090 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-14 12:44:23,091 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-14 12:44:23,116 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-14 12:44:23,118 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-14 12:44:23,118 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-14 12:44:23,118 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-14 12:44:23,121 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-14 12:44:23,122 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-14 12:44:23,122 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-14 12:44:23,123 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-14 12:44:23,124 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-14 12:44:23,124 INFO L153 SettingsManager]: * Use SBE=true [2024-06-14 12:44:23,124 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-14 12:44:23,124 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-14 12:44:23,124 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-14 12:44:23,125 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-14 12:44:23,125 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-14 12:44:23,125 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-14 12:44:23,126 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-14 12:44:23,126 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-14 12:44:23,126 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-14 12:44:23,126 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-14 12:44:23,126 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-14 12:44:23,127 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-14 12:44:23,127 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-14 12:44:23,127 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-14 12:44:23,131 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-14 12:44:23,132 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-14 12:44:23,132 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-14 12:44:23,132 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 12:44:23,133 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-14 12:44:23,133 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-14 12:44:23,133 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-14 12:44:23,133 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-14 12:44:23,133 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-14 12:44:23,134 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-14 12:44:23,134 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-14 12:44:23,134 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-14 12:44:23,134 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-14 12:44:23,134 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-14 12:44:23,135 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-14 12:44:23,328 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-14 12:44:23,342 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-14 12:44:23,344 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-14 12:44:23,345 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-14 12:44:23,345 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-14 12:44:23,346 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/rfi007_tso.yml/witness.yml [2024-06-14 12:44:23,429 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-14 12:44:23,429 INFO L274 PluginConnector]: CDTParser initialized [2024-06-14 12:44:23,429 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi007_tso.i [2024-06-14 12:44:24,503 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-14 12:44:24,730 INFO L384 CDTParser]: Found 1 translation units. [2024-06-14 12:44:24,730 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi007_tso.i [2024-06-14 12:44:24,749 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0dd62f3f2/1cbe9f8e62aa479492067aed0e2fecec/FLAGe4d7b3f83 [2024-06-14 12:44:24,761 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0dd62f3f2/1cbe9f8e62aa479492067aed0e2fecec [2024-06-14 12:44:24,761 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-14 12:44:24,762 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-14 12:44:24,763 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-14 12:44:24,763 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-14 12:44:24,769 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-14 12:44:24,770 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 12:44:23" (1/2) ... [2024-06-14 12:44:24,771 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37414ecc and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:44:24, skipping insertion in model container [2024-06-14 12:44:24,771 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 12:44:23" (1/2) ... [2024-06-14 12:44:24,772 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@b859773 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:44:24, skipping insertion in model container [2024-06-14 12:44:24,772 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 12:44:24" (2/2) ... [2024-06-14 12:44:24,772 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37414ecc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:44:24, skipping insertion in model container [2024-06-14 12:44:24,773 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 12:44:24" (2/2) ... [2024-06-14 12:44:24,773 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-14 12:44:24,831 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-14 12:44:24,832 INFO L97 edCorrectnessWitness]: Location invariant before [L814-L814] ((((((((((((((! 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$w_buff1 <= 2) && y$w_buff1 <= 127) && y$w_buff1 % 2 == 0) && (y$w_buff1 == 0 || y$w_buff1 == 2)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((((0 <= y$w_buff0 && y$w_buff0 <= 2) && y$w_buff0 <= 127) && y$w_buff0 % 2 == 0) && (y$w_buff0 == 0 || y$w_buff0 == 2)))) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || y$read_delayed_var == 0) [2024-06-14 12:44:24,833 INFO L97 edCorrectnessWitness]: Location invariant before [L813-L813] ((((((((((((((! multithreaded || y$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 <= 2) && y$w_buff1 <= 127) && y$w_buff1 % 2 == 0) && (y$w_buff1 == 0 || y$w_buff1 == 2)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((((0 <= y$w_buff0 && y$w_buff0 <= 2) && y$w_buff0 <= 127) && y$w_buff0 % 2 == 0) && (y$w_buff0 == 0 || y$w_buff0 == 2)))) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || y$read_delayed_var == 0) [2024-06-14 12:44:24,833 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-14 12:44:24,833 INFO L106 edCorrectnessWitness]: ghost_update [L811-L811] multithreaded = 1; [2024-06-14 12:44:24,869 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-14 12:44:25,161 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 12:44:25,171 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-14 12:44:25,279 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 12:44:25,314 INFO L206 MainTranslator]: Completed translation [2024-06-14 12:44:25,315 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:44:25 WrapperNode [2024-06-14 12:44:25,315 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-14 12:44:25,316 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-14 12:44:25,316 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-14 12:44:25,316 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-14 12:44:25,321 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:44:25" (1/1) ... [2024-06-14 12:44:25,335 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:44:25" (1/1) ... [2024-06-14 12:44:25,366 INFO L138 Inliner]: procedures = 174, calls = 36, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 154 [2024-06-14 12:44:25,366 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-14 12:44:25,372 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-14 12:44:25,372 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-14 12:44:25,372 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-14 12:44:25,381 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:44:25" (1/1) ... [2024-06-14 12:44:25,381 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:44:25" (1/1) ... [2024-06-14 12:44:25,393 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:44:25" (1/1) ... [2024-06-14 12:44:25,414 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 12:44:25,414 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:44:25" (1/1) ... [2024-06-14 12:44:25,415 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:44:25" (1/1) ... [2024-06-14 12:44:25,421 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:44:25" (1/1) ... [2024-06-14 12:44:25,435 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:44:25" (1/1) ... [2024-06-14 12:44:25,437 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:44:25" (1/1) ... [2024-06-14 12:44:25,438 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:44:25" (1/1) ... [2024-06-14 12:44:25,441 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-14 12:44:25,442 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-14 12:44:25,442 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-14 12:44:25,442 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-14 12:44:25,443 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:44:25" (1/1) ... [2024-06-14 12:44:25,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 12:44:25,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 12:44:25,464 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 12:44:25,468 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 12:44:25,488 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-14 12:44:25,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-14 12:44:25,489 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-14 12:44:25,489 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-14 12:44:25,489 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-14 12:44:25,489 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-14 12:44:25,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-14 12:44:25,489 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-14 12:44:25,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-14 12:44:25,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-14 12:44:25,490 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 12:44:25,610 INFO L244 CfgBuilder]: Building ICFG [2024-06-14 12:44:25,612 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-14 12:44:25,935 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-14 12:44:25,936 INFO L293 CfgBuilder]: Performing block encoding [2024-06-14 12:44:26,148 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-14 12:44:26,148 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-14 12:44:26,149 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 12:44:26 BoogieIcfgContainer [2024-06-14 12:44:26,150 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-14 12:44:26,153 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-14 12:44:26,153 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-14 12:44:26,155 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-14 12:44:26,156 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 12:44:23" (1/4) ... [2024-06-14 12:44:26,157 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66d32cdd and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 12:44:26, skipping insertion in model container [2024-06-14 12:44:26,157 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.06 12:44:24" (2/4) ... [2024-06-14 12:44:26,157 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66d32cdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 12:44:26, skipping insertion in model container [2024-06-14 12:44:26,158 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:44:25" (3/4) ... [2024-06-14 12:44:26,158 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66d32cdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 12:44:26, skipping insertion in model container [2024-06-14 12:44:26,158 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 12:44:26" (4/4) ... [2024-06-14 12:44:26,159 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi007_tso.i [2024-06-14 12:44:26,172 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-14 12:44:26,172 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-14 12:44:26,172 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-14 12:44:26,208 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-14 12:44:26,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 70 flow [2024-06-14 12:44:26,263 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2024-06-14 12:44:26,265 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 12:44:26,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 29 events. 0/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 40 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-14 12:44:26,266 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 31 transitions, 70 flow [2024-06-14 12:44:26,270 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 52 flow [2024-06-14 12:44:26,284 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-14 12:44:26,289 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;@16c8d97, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-14 12:44:26,290 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-14 12:44:26,294 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-14 12:44:26,295 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-14 12:44:26,295 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 12:44:26,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:26,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-14 12:44:26,296 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 12:44:26,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:26,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1606705191, now seen corresponding path program 1 times [2024-06-14 12:44:26,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:26,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182742124] [2024-06-14 12:44:26,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:26,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:26,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:27,297 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 12:44:27,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:27,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182742124] [2024-06-14 12:44:27,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182742124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:27,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:27,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-14 12:44:27,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161930019] [2024-06-14 12:44:27,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:27,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 12:44:27,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:27,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 12:44:27,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 12:44:27,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:44:27,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:27,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:27,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:44:27,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:27,513 INFO L124 PetriNetUnfolderBase]: 162/309 cut-off events. [2024-06-14 12:44:27,513 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-14 12:44:27,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 622 conditions, 309 events. 162/309 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1128 event pairs, 97 based on Foata normal form. 1/298 useless extension candidates. Maximal degree in co-relation 608. Up to 288 conditions per place. [2024-06-14 12:44:27,519 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 23 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2024-06-14 12:44:27,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 119 flow [2024-06-14 12:44:27,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 12:44:27,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 12:44:27,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2024-06-14 12:44:27,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5268817204301075 [2024-06-14 12:44:27,531 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 52 flow. Second operand 3 states and 49 transitions. [2024-06-14 12:44:27,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 119 flow [2024-06-14 12:44:27,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-14 12:44:27,535 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 71 flow [2024-06-14 12:44:27,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2024-06-14 12:44:27,539 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-06-14 12:44:27,540 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 71 flow [2024-06-14 12:44:27,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:27,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:27,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:27,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-14 12:44:27,541 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 12:44:27,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:27,541 INFO L85 PathProgramCache]: Analyzing trace with hash 2144571448, now seen corresponding path program 1 times [2024-06-14 12:44:27,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:27,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186023770] [2024-06-14 12:44:27,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:27,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:27,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:28,077 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 12:44:28,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:28,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186023770] [2024-06-14 12:44:28,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186023770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:28,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:28,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-14 12:44:28,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813106625] [2024-06-14 12:44:28,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:28,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-14 12:44:28,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:28,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-14 12:44:28,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-14 12:44:28,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:44:28,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 71 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 12:44:28,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:28,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:44:28,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:28,231 INFO L124 PetriNetUnfolderBase]: 186/337 cut-off events. [2024-06-14 12:44:28,232 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2024-06-14 12:44:28,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 781 conditions, 337 events. 186/337 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1172 event pairs, 94 based on Foata normal form. 2/338 useless extension candidates. Maximal degree in co-relation 766. Up to 319 conditions per place. [2024-06-14 12:44:28,236 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 28 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2024-06-14 12:44:28,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 163 flow [2024-06-14 12:44:28,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 12:44:28,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 12:44:28,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 59 transitions. [2024-06-14 12:44:28,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47580645161290325 [2024-06-14 12:44:28,238 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 71 flow. Second operand 4 states and 59 transitions. [2024-06-14 12:44:28,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 163 flow [2024-06-14 12:44:28,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 12:44:28,240 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 95 flow [2024-06-14 12:44:28,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=95, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2024-06-14 12:44:28,240 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2024-06-14 12:44:28,241 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 95 flow [2024-06-14 12:44:28,241 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 12:44:28,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:28,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:28,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-14 12:44:28,242 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 12:44:28,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:28,242 INFO L85 PathProgramCache]: Analyzing trace with hash 2057206554, now seen corresponding path program 1 times [2024-06-14 12:44:28,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:28,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174447643] [2024-06-14 12:44:28,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:28,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:28,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:28,760 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 12:44:28,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:28,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174447643] [2024-06-14 12:44:28,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174447643] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:28,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:28,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 12:44:28,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191277288] [2024-06-14 12:44:28,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:28,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 12:44:28,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:28,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 12:44:28,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-14 12:44:28,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:44:28,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 95 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 12:44:28,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:28,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:44:28,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:28,893 INFO L124 PetriNetUnfolderBase]: 180/327 cut-off events. [2024-06-14 12:44:28,893 INFO L125 PetriNetUnfolderBase]: For 195/195 co-relation queries the response was YES. [2024-06-14 12:44:28,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 839 conditions, 327 events. 180/327 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1119 event pairs, 52 based on Foata normal form. 4/330 useless extension candidates. Maximal degree in co-relation 822. Up to 291 conditions per place. [2024-06-14 12:44:28,895 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 33 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2024-06-14 12:44:28,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 42 transitions, 215 flow [2024-06-14 12:44:28,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 12:44:28,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 12:44:28,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 72 transitions. [2024-06-14 12:44:28,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4645161290322581 [2024-06-14 12:44:28,897 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 95 flow. Second operand 5 states and 72 transitions. [2024-06-14 12:44:28,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 42 transitions, 215 flow [2024-06-14 12:44:28,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 42 transitions, 206 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-14 12:44:28,898 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 119 flow [2024-06-14 12:44:28,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=119, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2024-06-14 12:44:28,899 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 7 predicate places. [2024-06-14 12:44:28,899 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 119 flow [2024-06-14 12:44:28,899 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 12:44:28,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:28,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:28,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-14 12:44:28,900 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 12:44:28,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:28,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1290578649, now seen corresponding path program 1 times [2024-06-14 12:44:28,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:28,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787389257] [2024-06-14 12:44:28,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:28,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:28,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:29,626 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 12:44:29,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:29,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787389257] [2024-06-14 12:44:29,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787389257] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:29,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:29,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:44:29,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395337586] [2024-06-14 12:44:29,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:29,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:44:29,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:29,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:44:29,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:44:29,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:44:29,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 119 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 12:44:29,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:29,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:44:29,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:29,841 INFO L124 PetriNetUnfolderBase]: 176/319 cut-off events. [2024-06-14 12:44:29,841 INFO L125 PetriNetUnfolderBase]: For 314/314 co-relation queries the response was YES. [2024-06-14 12:44:29,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 891 conditions, 319 events. 176/319 cut-off events. For 314/314 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1082 event pairs, 30 based on Foata normal form. 4/322 useless extension candidates. Maximal degree in co-relation 873. Up to 265 conditions per place. [2024-06-14 12:44:29,845 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 33 selfloop transitions, 8 changer transitions 0/43 dead transitions. [2024-06-14 12:44:29,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 43 transitions, 229 flow [2024-06-14 12:44:29,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:44:29,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:44:29,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 79 transitions. [2024-06-14 12:44:29,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42473118279569894 [2024-06-14 12:44:29,849 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 119 flow. Second operand 6 states and 79 transitions. [2024-06-14 12:44:29,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 43 transitions, 229 flow [2024-06-14 12:44:29,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 43 transitions, 214 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-14 12:44:29,851 INFO L231 Difference]: Finished difference. Result has 39 places, 28 transitions, 116 flow [2024-06-14 12:44:29,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=33, 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=6, PETRI_FLOW=116, PETRI_PLACES=39, PETRI_TRANSITIONS=28} [2024-06-14 12:44:29,853 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2024-06-14 12:44:29,853 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 28 transitions, 116 flow [2024-06-14 12:44:29,853 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 12:44:29,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:29,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:29,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-14 12:44:29,854 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 12:44:29,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:29,854 INFO L85 PathProgramCache]: Analyzing trace with hash 672537551, now seen corresponding path program 1 times [2024-06-14 12:44:29,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:29,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275878137] [2024-06-14 12:44:29,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:29,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:29,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:30,397 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 12:44:30,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:30,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275878137] [2024-06-14 12:44:30,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275878137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:30,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:30,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 12:44:30,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506438274] [2024-06-14 12:44:30,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:30,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 12:44:30,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:30,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 12:44:30,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-14 12:44:30,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:44:30,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 28 transitions, 116 flow. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 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 12:44:30,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:30,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:44:30,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:30,546 INFO L124 PetriNetUnfolderBase]: 147/283 cut-off events. [2024-06-14 12:44:30,546 INFO L125 PetriNetUnfolderBase]: For 377/377 co-relation queries the response was YES. [2024-06-14 12:44:30,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 811 conditions, 283 events. 147/283 cut-off events. For 377/377 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 985 event pairs, 53 based on Foata normal form. 1/283 useless extension candidates. Maximal degree in co-relation 792. Up to 259 conditions per place. [2024-06-14 12:44:30,548 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 26 selfloop transitions, 6 changer transitions 0/35 dead transitions. [2024-06-14 12:44:30,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 35 transitions, 198 flow [2024-06-14 12:44:30,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 12:44:30,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 12:44:30,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 59 transitions. [2024-06-14 12:44:30,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38064516129032255 [2024-06-14 12:44:30,550 INFO L175 Difference]: Start difference. First operand has 39 places, 28 transitions, 116 flow. Second operand 5 states and 59 transitions. [2024-06-14 12:44:30,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 35 transitions, 198 flow [2024-06-14 12:44:30,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 35 transitions, 178 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-14 12:44:30,555 INFO L231 Difference]: Finished difference. Result has 40 places, 30 transitions, 123 flow [2024-06-14 12:44:30,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=123, PETRI_PLACES=40, PETRI_TRANSITIONS=30} [2024-06-14 12:44:30,556 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 10 predicate places. [2024-06-14 12:44:30,558 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 30 transitions, 123 flow [2024-06-14 12:44:30,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 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 12:44:30,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:30,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:30,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-14 12:44:30,563 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 12:44:30,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:30,564 INFO L85 PathProgramCache]: Analyzing trace with hash -616340437, now seen corresponding path program 1 times [2024-06-14 12:44:30,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:30,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421614458] [2024-06-14 12:44:30,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:30,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:30,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:31,423 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 12:44:31,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:31,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421614458] [2024-06-14 12:44:31,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421614458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:31,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:31,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:44:31,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164984940] [2024-06-14 12:44:31,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:31,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:44:31,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:31,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:44:31,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:44:31,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:44:31,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 30 transitions, 123 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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 12:44:31,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:31,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:44:31,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:31,620 INFO L124 PetriNetUnfolderBase]: 145/280 cut-off events. [2024-06-14 12:44:31,620 INFO L125 PetriNetUnfolderBase]: For 477/477 co-relation queries the response was YES. [2024-06-14 12:44:31,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 837 conditions, 280 events. 145/280 cut-off events. For 477/477 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 965 event pairs, 52 based on Foata normal form. 1/280 useless extension candidates. Maximal degree in co-relation 816. Up to 253 conditions per place. [2024-06-14 12:44:31,622 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 27 selfloop transitions, 8 changer transitions 0/38 dead transitions. [2024-06-14 12:44:31,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 38 transitions, 215 flow [2024-06-14 12:44:31,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:44:31,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:44:31,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 68 transitions. [2024-06-14 12:44:31,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-14 12:44:31,623 INFO L175 Difference]: Start difference. First operand has 40 places, 30 transitions, 123 flow. Second operand 6 states and 68 transitions. [2024-06-14 12:44:31,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 38 transitions, 215 flow [2024-06-14 12:44:31,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 38 transitions, 204 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-14 12:44:31,624 INFO L231 Difference]: Finished difference. Result has 43 places, 32 transitions, 145 flow [2024-06-14 12:44:31,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=145, PETRI_PLACES=43, PETRI_TRANSITIONS=32} [2024-06-14 12:44:31,625 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 13 predicate places. [2024-06-14 12:44:31,625 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 32 transitions, 145 flow [2024-06-14 12:44:31,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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 12:44:31,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:31,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:31,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-14 12:44:31,626 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 12:44:31,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:31,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1661963166, now seen corresponding path program 1 times [2024-06-14 12:44:31,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:31,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742701005] [2024-06-14 12:44:31,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:31,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:31,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:32,160 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 12:44:32,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:32,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742701005] [2024-06-14 12:44:32,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742701005] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:32,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:32,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:44:32,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976967222] [2024-06-14 12:44:32,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:32,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:44:32,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:32,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:44:32,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:44:32,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:44:32,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 32 transitions, 145 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 12:44:32,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:32,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:44:32,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:32,367 INFO L124 PetriNetUnfolderBase]: 173/315 cut-off events. [2024-06-14 12:44:32,368 INFO L125 PetriNetUnfolderBase]: For 745/745 co-relation queries the response was YES. [2024-06-14 12:44:32,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1028 conditions, 315 events. 173/315 cut-off events. For 745/745 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1050 event pairs, 62 based on Foata normal form. 1/315 useless extension candidates. Maximal degree in co-relation 1006. Up to 294 conditions per place. [2024-06-14 12:44:32,369 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 33 selfloop transitions, 8 changer transitions 0/43 dead transitions. [2024-06-14 12:44:32,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 43 transitions, 257 flow [2024-06-14 12:44:32,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:44:32,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:44:32,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 66 transitions. [2024-06-14 12:44:32,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-14 12:44:32,371 INFO L175 Difference]: Start difference. First operand has 43 places, 32 transitions, 145 flow. Second operand 6 states and 66 transitions. [2024-06-14 12:44:32,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 43 transitions, 257 flow [2024-06-14 12:44:32,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 43 transitions, 240 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-14 12:44:32,374 INFO L231 Difference]: Finished difference. Result has 45 places, 34 transitions, 161 flow [2024-06-14 12:44:32,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=161, PETRI_PLACES=45, PETRI_TRANSITIONS=34} [2024-06-14 12:44:32,375 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 15 predicate places. [2024-06-14 12:44:32,375 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 161 flow [2024-06-14 12:44:32,375 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 12:44:32,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:32,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:32,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-14 12:44:32,376 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 12:44:32,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:32,377 INFO L85 PathProgramCache]: Analyzing trace with hash 2063514030, now seen corresponding path program 2 times [2024-06-14 12:44:32,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:32,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364547802] [2024-06-14 12:44:32,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:32,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:32,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:32,869 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 12:44:32,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:32,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364547802] [2024-06-14 12:44:32,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364547802] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:32,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:32,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:44:32,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355125744] [2024-06-14 12:44:32,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:32,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:44:32,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:32,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:44:32,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:44:32,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:44:32,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 34 transitions, 161 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 12:44:32,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:32,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:44:32,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:33,054 INFO L124 PetriNetUnfolderBase]: 171/313 cut-off events. [2024-06-14 12:44:33,055 INFO L125 PetriNetUnfolderBase]: For 969/972 co-relation queries the response was YES. [2024-06-14 12:44:33,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1078 conditions, 313 events. 171/313 cut-off events. For 969/972 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1057 event pairs, 66 based on Foata normal form. 3/314 useless extension candidates. Maximal degree in co-relation 1055. Up to 285 conditions per place. [2024-06-14 12:44:33,056 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 29 selfloop transitions, 11 changer transitions 0/42 dead transitions. [2024-06-14 12:44:33,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 42 transitions, 267 flow [2024-06-14 12:44:33,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:44:33,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:44:33,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 65 transitions. [2024-06-14 12:44:33,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34946236559139787 [2024-06-14 12:44:33,058 INFO L175 Difference]: Start difference. First operand has 45 places, 34 transitions, 161 flow. Second operand 6 states and 65 transitions. [2024-06-14 12:44:33,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 42 transitions, 267 flow [2024-06-14 12:44:33,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 42 transitions, 250 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-14 12:44:33,060 INFO L231 Difference]: Finished difference. Result has 47 places, 36 transitions, 187 flow [2024-06-14 12:44:33,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=187, PETRI_PLACES=47, PETRI_TRANSITIONS=36} [2024-06-14 12:44:33,060 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2024-06-14 12:44:33,060 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 36 transitions, 187 flow [2024-06-14 12:44:33,061 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 12:44:33,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:33,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:33,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-14 12:44:33,061 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 12:44:33,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:33,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1214428462, now seen corresponding path program 1 times [2024-06-14 12:44:33,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:33,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576623037] [2024-06-14 12:44:33,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:33,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:33,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:33,587 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 12:44:33,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:33,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576623037] [2024-06-14 12:44:33,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576623037] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:33,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:33,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:44:33,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364719352] [2024-06-14 12:44:33,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:33,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:44:33,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:33,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:44:33,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:44:33,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:44:33,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 36 transitions, 187 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 12:44:33,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:33,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:44:33,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:33,841 INFO L124 PetriNetUnfolderBase]: 193/353 cut-off events. [2024-06-14 12:44:33,842 INFO L125 PetriNetUnfolderBase]: For 1305/1305 co-relation queries the response was YES. [2024-06-14 12:44:33,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1270 conditions, 353 events. 193/353 cut-off events. For 1305/1305 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1244 event pairs, 44 based on Foata normal form. 2/354 useless extension candidates. Maximal degree in co-relation 1246. Up to 291 conditions per place. [2024-06-14 12:44:33,844 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 42 selfloop transitions, 16 changer transitions 0/60 dead transitions. [2024-06-14 12:44:33,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 60 transitions, 387 flow [2024-06-14 12:44:33,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:44:33,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:44:33,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-14 12:44:33,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3588709677419355 [2024-06-14 12:44:33,845 INFO L175 Difference]: Start difference. First operand has 47 places, 36 transitions, 187 flow. Second operand 8 states and 89 transitions. [2024-06-14 12:44:33,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 60 transitions, 387 flow [2024-06-14 12:44:33,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 60 transitions, 356 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-14 12:44:33,847 INFO L231 Difference]: Finished difference. Result has 54 places, 45 transitions, 263 flow [2024-06-14 12:44:33,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=263, PETRI_PLACES=54, PETRI_TRANSITIONS=45} [2024-06-14 12:44:33,848 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 24 predicate places. [2024-06-14 12:44:33,848 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 45 transitions, 263 flow [2024-06-14 12:44:33,848 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 12:44:33,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:33,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:33,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-14 12:44:33,849 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 12:44:33,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:33,849 INFO L85 PathProgramCache]: Analyzing trace with hash -632825254, now seen corresponding path program 2 times [2024-06-14 12:44:33,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:33,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011164153] [2024-06-14 12:44:33,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:33,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:33,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:34,403 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 12:44:34,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:34,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011164153] [2024-06-14 12:44:34,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011164153] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:34,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:34,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:44:34,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073826477] [2024-06-14 12:44:34,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:34,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:44:34,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:34,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:44:34,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:44:34,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:44:34,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 263 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 12:44:34,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:34,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:44:34,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:34,659 INFO L124 PetriNetUnfolderBase]: 199/363 cut-off events. [2024-06-14 12:44:34,660 INFO L125 PetriNetUnfolderBase]: For 1745/1745 co-relation queries the response was YES. [2024-06-14 12:44:34,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1463 conditions, 363 events. 199/363 cut-off events. For 1745/1745 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1285 event pairs, 43 based on Foata normal form. 2/364 useless extension candidates. Maximal degree in co-relation 1435. Up to 293 conditions per place. [2024-06-14 12:44:34,662 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 40 selfloop transitions, 21 changer transitions 0/63 dead transitions. [2024-06-14 12:44:34,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 63 transitions, 459 flow [2024-06-14 12:44:34,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:44:34,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:44:34,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-14 12:44:34,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3640552995391705 [2024-06-14 12:44:34,663 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 263 flow. Second operand 7 states and 79 transitions. [2024-06-14 12:44:34,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 63 transitions, 459 flow [2024-06-14 12:44:34,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 63 transitions, 434 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-14 12:44:34,666 INFO L231 Difference]: Finished difference. Result has 59 places, 50 transitions, 336 flow [2024-06-14 12:44:34,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=336, PETRI_PLACES=59, PETRI_TRANSITIONS=50} [2024-06-14 12:44:34,666 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 29 predicate places. [2024-06-14 12:44:34,666 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 50 transitions, 336 flow [2024-06-14 12:44:34,667 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 12:44:34,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:34,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:34,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-14 12:44:34,667 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 12:44:34,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:34,668 INFO L85 PathProgramCache]: Analyzing trace with hash 395682570, now seen corresponding path program 1 times [2024-06-14 12:44:34,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:34,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388755097] [2024-06-14 12:44:34,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:34,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:34,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:35,348 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 12:44:35,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:35,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388755097] [2024-06-14 12:44:35,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388755097] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:35,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:35,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:44:35,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502928974] [2024-06-14 12:44:35,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:35,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:44:35,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:35,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:44:35,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:44:35,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:44:35,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 50 transitions, 336 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 12:44:35,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:35,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:44:35,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:35,550 INFO L124 PetriNetUnfolderBase]: 202/368 cut-off events. [2024-06-14 12:44:35,551 INFO L125 PetriNetUnfolderBase]: For 2175/2175 co-relation queries the response was YES. [2024-06-14 12:44:35,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1612 conditions, 368 events. 202/368 cut-off events. For 2175/2175 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1312 event pairs, 45 based on Foata normal form. 1/368 useless extension candidates. Maximal degree in co-relation 1582. Up to 337 conditions per place. [2024-06-14 12:44:35,553 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 48 selfloop transitions, 12 changer transitions 0/62 dead transitions. [2024-06-14 12:44:35,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 62 transitions, 496 flow [2024-06-14 12:44:35,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:44:35,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:44:35,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 74 transitions. [2024-06-14 12:44:35,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34101382488479265 [2024-06-14 12:44:35,554 INFO L175 Difference]: Start difference. First operand has 59 places, 50 transitions, 336 flow. Second operand 7 states and 74 transitions. [2024-06-14 12:44:35,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 62 transitions, 496 flow [2024-06-14 12:44:35,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 62 transitions, 463 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-14 12:44:35,561 INFO L231 Difference]: Finished difference. Result has 63 places, 52 transitions, 346 flow [2024-06-14 12:44:35,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=346, PETRI_PLACES=63, PETRI_TRANSITIONS=52} [2024-06-14 12:44:35,562 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 33 predicate places. [2024-06-14 12:44:35,562 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 52 transitions, 346 flow [2024-06-14 12:44:35,562 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 12:44:35,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:35,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:35,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-14 12:44:35,563 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 12:44:35,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:35,563 INFO L85 PathProgramCache]: Analyzing trace with hash -632705284, now seen corresponding path program 3 times [2024-06-14 12:44:35,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:35,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7449064] [2024-06-14 12:44:35,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:35,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:35,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:36,093 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 12:44:36,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:36,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7449064] [2024-06-14 12:44:36,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7449064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:36,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:36,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:44:36,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291708860] [2024-06-14 12:44:36,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:36,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:44:36,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:36,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:44:36,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:44:36,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:44:36,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 52 transitions, 346 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 12:44:36,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:36,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:44:36,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:36,302 INFO L124 PetriNetUnfolderBase]: 213/386 cut-off events. [2024-06-14 12:44:36,302 INFO L125 PetriNetUnfolderBase]: For 2257/2257 co-relation queries the response was YES. [2024-06-14 12:44:36,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1666 conditions, 386 events. 213/386 cut-off events. For 2257/2257 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1370 event pairs, 47 based on Foata normal form. 2/387 useless extension candidates. Maximal degree in co-relation 1635. Up to 299 conditions per place. [2024-06-14 12:44:36,306 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 43 selfloop transitions, 23 changer transitions 0/68 dead transitions. [2024-06-14 12:44:36,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 68 transitions, 564 flow [2024-06-14 12:44:36,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:44:36,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:44:36,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-06-14 12:44:36,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3686635944700461 [2024-06-14 12:44:36,308 INFO L175 Difference]: Start difference. First operand has 63 places, 52 transitions, 346 flow. Second operand 7 states and 80 transitions. [2024-06-14 12:44:36,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 68 transitions, 564 flow [2024-06-14 12:44:36,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 68 transitions, 537 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-14 12:44:36,312 INFO L231 Difference]: Finished difference. Result has 65 places, 56 transitions, 406 flow [2024-06-14 12:44:36,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=406, PETRI_PLACES=65, PETRI_TRANSITIONS=56} [2024-06-14 12:44:36,313 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 35 predicate places. [2024-06-14 12:44:36,313 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 56 transitions, 406 flow [2024-06-14 12:44:36,313 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 12:44:36,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:36,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:36,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-14 12:44:36,314 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 12:44:36,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:36,314 INFO L85 PathProgramCache]: Analyzing trace with hash 402348810, now seen corresponding path program 2 times [2024-06-14 12:44:36,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:36,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47432721] [2024-06-14 12:44:36,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:36,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:36,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:37,056 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 12:44:37,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:37,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47432721] [2024-06-14 12:44:37,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47432721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:37,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:37,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:44:37,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065028721] [2024-06-14 12:44:37,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:37,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:44:37,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:37,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:44:37,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:44:37,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:44:37,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 406 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 12:44:37,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:37,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:44:37,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:37,236 INFO L124 PetriNetUnfolderBase]: 216/392 cut-off events. [2024-06-14 12:44:37,236 INFO L125 PetriNetUnfolderBase]: For 2774/2780 co-relation queries the response was YES. [2024-06-14 12:44:37,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1783 conditions, 392 events. 216/392 cut-off events. For 2774/2780 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1402 event pairs, 49 based on Foata normal form. 5/394 useless extension candidates. Maximal degree in co-relation 1751. Up to 344 conditions per place. [2024-06-14 12:44:37,238 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 49 selfloop transitions, 19 changer transitions 0/70 dead transitions. [2024-06-14 12:44:37,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 70 transitions, 622 flow [2024-06-14 12:44:37,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:44:37,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:44:37,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 75 transitions. [2024-06-14 12:44:37,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3456221198156682 [2024-06-14 12:44:37,240 INFO L175 Difference]: Start difference. First operand has 65 places, 56 transitions, 406 flow. Second operand 7 states and 75 transitions. [2024-06-14 12:44:37,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 70 transitions, 622 flow [2024-06-14 12:44:37,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 70 transitions, 595 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-14 12:44:37,246 INFO L231 Difference]: Finished difference. Result has 70 places, 61 transitions, 468 flow [2024-06-14 12:44:37,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=468, PETRI_PLACES=70, PETRI_TRANSITIONS=61} [2024-06-14 12:44:37,247 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 40 predicate places. [2024-06-14 12:44:37,247 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 61 transitions, 468 flow [2024-06-14 12:44:37,248 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 12:44:37,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:37,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:37,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-14 12:44:37,248 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 12:44:37,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:37,249 INFO L85 PathProgramCache]: Analyzing trace with hash 328153898, now seen corresponding path program 3 times [2024-06-14 12:44:37,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:37,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383000276] [2024-06-14 12:44:37,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:37,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:37,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:37,978 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 12:44:37,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:37,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383000276] [2024-06-14 12:44:37,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383000276] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:37,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:37,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:44:37,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153235700] [2024-06-14 12:44:37,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:37,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:44:37,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:37,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:44:37,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:44:38,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:44:38,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 61 transitions, 468 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 12:44:38,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:38,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:44:38,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:38,168 INFO L124 PetriNetUnfolderBase]: 214/389 cut-off events. [2024-06-14 12:44:38,169 INFO L125 PetriNetUnfolderBase]: For 3057/3063 co-relation queries the response was YES. [2024-06-14 12:44:38,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1853 conditions, 389 events. 214/389 cut-off events. For 3057/3063 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1384 event pairs, 49 based on Foata normal form. 5/391 useless extension candidates. Maximal degree in co-relation 1818. Up to 351 conditions per place. [2024-06-14 12:44:38,171 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 53 selfloop transitions, 15 changer transitions 0/70 dead transitions. [2024-06-14 12:44:38,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 70 transitions, 635 flow [2024-06-14 12:44:38,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:44:38,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:44:38,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 73 transitions. [2024-06-14 12:44:38,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33640552995391704 [2024-06-14 12:44:38,173 INFO L175 Difference]: Start difference. First operand has 70 places, 61 transitions, 468 flow. Second operand 7 states and 73 transitions. [2024-06-14 12:44:38,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 70 transitions, 635 flow [2024-06-14 12:44:38,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 70 transitions, 603 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-14 12:44:38,178 INFO L231 Difference]: Finished difference. Result has 74 places, 62 transitions, 480 flow [2024-06-14 12:44:38,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=480, PETRI_PLACES=74, PETRI_TRANSITIONS=62} [2024-06-14 12:44:38,179 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 44 predicate places. [2024-06-14 12:44:38,179 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 62 transitions, 480 flow [2024-06-14 12:44:38,179 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 12:44:38,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:38,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:38,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-14 12:44:38,179 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 12:44:38,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:38,180 INFO L85 PathProgramCache]: Analyzing trace with hash 23391782, now seen corresponding path program 4 times [2024-06-14 12:44:38,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:38,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288439183] [2024-06-14 12:44:38,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:38,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:38,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:38,681 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 12:44:38,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:38,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288439183] [2024-06-14 12:44:38,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288439183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:38,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:38,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:44:38,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687447023] [2024-06-14 12:44:38,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:38,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:44:38,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:38,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:44:38,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:44:38,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:44:38,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 62 transitions, 480 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 12:44:38,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:38,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:44:38,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:38,907 INFO L124 PetriNetUnfolderBase]: 210/383 cut-off events. [2024-06-14 12:44:38,908 INFO L125 PetriNetUnfolderBase]: For 3381/3387 co-relation queries the response was YES. [2024-06-14 12:44:38,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1849 conditions, 383 events. 210/383 cut-off events. For 3381/3387 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1377 event pairs, 55 based on Foata normal form. 2/380 useless extension candidates. Maximal degree in co-relation 1812. Up to 283 conditions per place. [2024-06-14 12:44:38,910 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 45 selfloop transitions, 27 changer transitions 0/74 dead transitions. [2024-06-14 12:44:38,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 74 transitions, 698 flow [2024-06-14 12:44:38,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:44:38,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:44:38,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-14 12:44:38,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3640552995391705 [2024-06-14 12:44:38,912 INFO L175 Difference]: Start difference. First operand has 74 places, 62 transitions, 480 flow. Second operand 7 states and 79 transitions. [2024-06-14 12:44:38,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 74 transitions, 698 flow [2024-06-14 12:44:38,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 74 transitions, 667 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-14 12:44:38,918 INFO L231 Difference]: Finished difference. Result has 76 places, 64 transitions, 532 flow [2024-06-14 12:44:38,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=449, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=532, PETRI_PLACES=76, PETRI_TRANSITIONS=64} [2024-06-14 12:44:38,918 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 46 predicate places. [2024-06-14 12:44:38,918 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 64 transitions, 532 flow [2024-06-14 12:44:38,918 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 12:44:38,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:38,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:38,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-14 12:44:38,919 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 12:44:38,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:38,919 INFO L85 PathProgramCache]: Analyzing trace with hash 402357738, now seen corresponding path program 1 times [2024-06-14 12:44:38,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:38,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534969275] [2024-06-14 12:44:38,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:38,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:38,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:40,007 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 12:44:40,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:40,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534969275] [2024-06-14 12:44:40,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534969275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:40,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:40,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:44:40,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427783285] [2024-06-14 12:44:40,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:40,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:44:40,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:40,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:44:40,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:44:40,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:44:40,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 64 transitions, 532 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 12:44:40,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:40,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:44:40,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:40,232 INFO L124 PetriNetUnfolderBase]: 208/379 cut-off events. [2024-06-14 12:44:40,232 INFO L125 PetriNetUnfolderBase]: For 3657/3657 co-relation queries the response was YES. [2024-06-14 12:44:40,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1915 conditions, 379 events. 208/379 cut-off events. For 3657/3657 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1357 event pairs, 48 based on Foata normal form. 1/379 useless extension candidates. Maximal degree in co-relation 1877. Up to 355 conditions per place. [2024-06-14 12:44:40,235 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 60 selfloop transitions, 12 changer transitions 0/74 dead transitions. [2024-06-14 12:44:40,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 74 transitions, 706 flow [2024-06-14 12:44:40,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:44:40,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:44:40,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 79 transitions. [2024-06-14 12:44:40,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3185483870967742 [2024-06-14 12:44:40,237 INFO L175 Difference]: Start difference. First operand has 76 places, 64 transitions, 532 flow. Second operand 8 states and 79 transitions. [2024-06-14 12:44:40,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 74 transitions, 706 flow [2024-06-14 12:44:40,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 74 transitions, 639 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-14 12:44:40,242 INFO L231 Difference]: Finished difference. Result has 79 places, 66 transitions, 508 flow [2024-06-14 12:44:40,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=508, PETRI_PLACES=79, PETRI_TRANSITIONS=66} [2024-06-14 12:44:40,243 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 49 predicate places. [2024-06-14 12:44:40,243 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 66 transitions, 508 flow [2024-06-14 12:44:40,243 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 12:44:40,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:40,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:40,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-14 12:44:40,244 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 12:44:40,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:40,244 INFO L85 PathProgramCache]: Analyzing trace with hash 577446209, now seen corresponding path program 1 times [2024-06-14 12:44:40,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:40,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690035491] [2024-06-14 12:44:40,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:40,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:40,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:40,937 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 12:44:40,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:40,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690035491] [2024-06-14 12:44:40,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690035491] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:40,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:40,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:44:40,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069057832] [2024-06-14 12:44:40,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:40,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:44:40,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:40,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:44:40,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:44:41,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:44:41,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 66 transitions, 508 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 12:44:41,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:41,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:44:41,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:41,210 INFO L124 PetriNetUnfolderBase]: 206/376 cut-off events. [2024-06-14 12:44:41,210 INFO L125 PetriNetUnfolderBase]: For 3702/3702 co-relation queries the response was YES. [2024-06-14 12:44:41,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1876 conditions, 376 events. 206/376 cut-off events. For 3702/3702 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1336 event pairs, 43 based on Foata normal form. 1/376 useless extension candidates. Maximal degree in co-relation 1837. Up to 301 conditions per place. [2024-06-14 12:44:41,212 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 56 selfloop transitions, 21 changer transitions 0/79 dead transitions. [2024-06-14 12:44:41,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 79 transitions, 702 flow [2024-06-14 12:44:41,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:44:41,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:44:41,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-14 12:44:41,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3640552995391705 [2024-06-14 12:44:41,214 INFO L175 Difference]: Start difference. First operand has 79 places, 66 transitions, 508 flow. Second operand 7 states and 79 transitions. [2024-06-14 12:44:41,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 79 transitions, 702 flow [2024-06-14 12:44:41,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 79 transitions, 647 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-14 12:44:41,219 INFO L231 Difference]: Finished difference. Result has 79 places, 66 transitions, 508 flow [2024-06-14 12:44:41,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=508, PETRI_PLACES=79, PETRI_TRANSITIONS=66} [2024-06-14 12:44:41,219 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 49 predicate places. [2024-06-14 12:44:41,219 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 66 transitions, 508 flow [2024-06-14 12:44:41,219 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 12:44:41,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:41,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:41,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-14 12:44:41,220 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 12:44:41,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:41,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1857254538, now seen corresponding path program 1 times [2024-06-14 12:44:41,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:41,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62463725] [2024-06-14 12:44:41,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:41,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:41,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:41,972 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 12:44:41,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:41,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62463725] [2024-06-14 12:44:41,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62463725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:41,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:41,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:44:41,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734794906] [2024-06-14 12:44:41,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:41,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:44:41,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:41,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:44:41,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:44:42,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:44:42,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 66 transitions, 508 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 12:44:42,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:42,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:44:42,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:42,291 INFO L124 PetriNetUnfolderBase]: 212/386 cut-off events. [2024-06-14 12:44:42,291 INFO L125 PetriNetUnfolderBase]: For 4370/4370 co-relation queries the response was YES. [2024-06-14 12:44:42,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1956 conditions, 386 events. 212/386 cut-off events. For 4370/4370 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1380 event pairs, 39 based on Foata normal form. 2/387 useless extension candidates. Maximal degree in co-relation 1917. Up to 304 conditions per place. [2024-06-14 12:44:42,294 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 58 selfloop transitions, 23 changer transitions 0/83 dead transitions. [2024-06-14 12:44:42,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 83 transitions, 732 flow [2024-06-14 12:44:42,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:44:42,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:44:42,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-14 12:44:42,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-14 12:44:42,295 INFO L175 Difference]: Start difference. First operand has 79 places, 66 transitions, 508 flow. Second operand 8 states and 88 transitions. [2024-06-14 12:44:42,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 83 transitions, 732 flow [2024-06-14 12:44:42,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 83 transitions, 684 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-14 12:44:42,302 INFO L231 Difference]: Finished difference. Result has 81 places, 68 transitions, 532 flow [2024-06-14 12:44:42,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=532, PETRI_PLACES=81, PETRI_TRANSITIONS=68} [2024-06-14 12:44:42,303 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 51 predicate places. [2024-06-14 12:44:42,303 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 68 transitions, 532 flow [2024-06-14 12:44:42,305 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 12:44:42,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:42,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:42,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-14 12:44:42,306 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 12:44:42,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:42,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1437185654, now seen corresponding path program 2 times [2024-06-14 12:44:42,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:42,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248209157] [2024-06-14 12:44:42,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:42,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:42,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:43,070 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 12:44:43,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:43,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248209157] [2024-06-14 12:44:43,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248209157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:43,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:43,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:44:43,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202054590] [2024-06-14 12:44:43,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:43,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:44:43,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:43,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:44:43,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:44:43,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:44:43,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 68 transitions, 532 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 12:44:43,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:43,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:44:43,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:43,365 INFO L124 PetriNetUnfolderBase]: 233/420 cut-off events. [2024-06-14 12:44:43,366 INFO L125 PetriNetUnfolderBase]: For 5490/5490 co-relation queries the response was YES. [2024-06-14 12:44:43,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2228 conditions, 420 events. 233/420 cut-off events. For 5490/5490 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1558 event pairs, 47 based on Foata normal form. 2/421 useless extension candidates. Maximal degree in co-relation 2188. Up to 298 conditions per place. [2024-06-14 12:44:43,368 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 58 selfloop transitions, 29 changer transitions 0/89 dead transitions. [2024-06-14 12:44:43,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 89 transitions, 876 flow [2024-06-14 12:44:43,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:44:43,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:44:43,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-14 12:44:43,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-14 12:44:43,370 INFO L175 Difference]: Start difference. First operand has 81 places, 68 transitions, 532 flow. Second operand 8 states and 92 transitions. [2024-06-14 12:44:43,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 89 transitions, 876 flow [2024-06-14 12:44:43,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 89 transitions, 822 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-14 12:44:43,375 INFO L231 Difference]: Finished difference. Result has 83 places, 74 transitions, 605 flow [2024-06-14 12:44:43,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=605, PETRI_PLACES=83, PETRI_TRANSITIONS=74} [2024-06-14 12:44:43,376 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 53 predicate places. [2024-06-14 12:44:43,384 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 74 transitions, 605 flow [2024-06-14 12:44:43,384 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 12:44:43,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:43,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:43,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-14 12:44:43,385 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 12:44:43,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:43,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1860979405, now seen corresponding path program 1 times [2024-06-14 12:44:43,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:43,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145234550] [2024-06-14 12:44:43,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:43,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:43,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:44,200 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 12:44:44,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:44,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145234550] [2024-06-14 12:44:44,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145234550] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:44,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:44,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:44:44,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17313331] [2024-06-14 12:44:44,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:44,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:44:44,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:44,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:44:44,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:44:44,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:44:44,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 74 transitions, 605 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 12:44:44,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:44,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:44:44,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:44,434 INFO L124 PetriNetUnfolderBase]: 236/425 cut-off events. [2024-06-14 12:44:44,434 INFO L125 PetriNetUnfolderBase]: For 6025/6025 co-relation queries the response was YES. [2024-06-14 12:44:44,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2315 conditions, 425 events. 236/425 cut-off events. For 6025/6025 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1568 event pairs, 47 based on Foata normal form. 1/425 useless extension candidates. Maximal degree in co-relation 2274. Up to 391 conditions per place. [2024-06-14 12:44:44,437 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 71 selfloop transitions, 14 changer transitions 0/87 dead transitions. [2024-06-14 12:44:44,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 87 transitions, 823 flow [2024-06-14 12:44:44,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:44:44,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:44:44,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 82 transitions. [2024-06-14 12:44:44,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33064516129032256 [2024-06-14 12:44:44,438 INFO L175 Difference]: Start difference. First operand has 83 places, 74 transitions, 605 flow. Second operand 8 states and 82 transitions. [2024-06-14 12:44:44,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 87 transitions, 823 flow [2024-06-14 12:44:44,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 87 transitions, 790 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-14 12:44:44,445 INFO L231 Difference]: Finished difference. Result has 88 places, 76 transitions, 625 flow [2024-06-14 12:44:44,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=572, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=625, PETRI_PLACES=88, PETRI_TRANSITIONS=76} [2024-06-14 12:44:44,446 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 58 predicate places. [2024-06-14 12:44:44,446 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 76 transitions, 625 flow [2024-06-14 12:44:44,446 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 12:44:44,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:44,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:44,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-14 12:44:44,446 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 12:44:44,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:44,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1860979188, now seen corresponding path program 3 times [2024-06-14 12:44:44,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:44,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514944402] [2024-06-14 12:44:44,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:44,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:44,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:45,169 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 12:44:45,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:45,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514944402] [2024-06-14 12:44:45,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514944402] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:45,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:45,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:44:45,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654895361] [2024-06-14 12:44:45,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:45,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:44:45,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:45,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:44:45,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:44:45,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:44:45,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 76 transitions, 625 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 12:44:45,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:45,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:44:45,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:45,426 INFO L124 PetriNetUnfolderBase]: 232/419 cut-off events. [2024-06-14 12:44:45,426 INFO L125 PetriNetUnfolderBase]: For 6213/6213 co-relation queries the response was YES. [2024-06-14 12:44:45,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2314 conditions, 419 events. 232/419 cut-off events. For 6213/6213 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1540 event pairs, 46 based on Foata normal form. 2/420 useless extension candidates. Maximal degree in co-relation 2271. Up to 382 conditions per place. [2024-06-14 12:44:45,429 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 72 selfloop transitions, 14 changer transitions 0/88 dead transitions. [2024-06-14 12:44:45,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 88 transitions, 833 flow [2024-06-14 12:44:45,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:44:45,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:44:45,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 83 transitions. [2024-06-14 12:44:45,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3346774193548387 [2024-06-14 12:44:45,430 INFO L175 Difference]: Start difference. First operand has 88 places, 76 transitions, 625 flow. Second operand 8 states and 83 transitions. [2024-06-14 12:44:45,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 88 transitions, 833 flow [2024-06-14 12:44:45,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 88 transitions, 784 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-14 12:44:45,437 INFO L231 Difference]: Finished difference. Result has 90 places, 76 transitions, 609 flow [2024-06-14 12:44:45,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=609, PETRI_PLACES=90, PETRI_TRANSITIONS=76} [2024-06-14 12:44:45,437 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 60 predicate places. [2024-06-14 12:44:45,438 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 76 transitions, 609 flow [2024-06-14 12:44:45,438 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 12:44:45,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:45,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:45,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-14 12:44:45,438 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 12:44:45,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:45,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1230526634, now seen corresponding path program 4 times [2024-06-14 12:44:45,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:45,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345563090] [2024-06-14 12:44:45,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:45,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:45,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:46,095 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 12:44:46,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:46,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345563090] [2024-06-14 12:44:46,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345563090] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:46,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:46,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:44:46,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629692802] [2024-06-14 12:44:46,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:46,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:44:46,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:46,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:44:46,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:44:46,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:44:46,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 76 transitions, 609 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 12:44:46,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:46,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:44:46,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:46,293 INFO L124 PetriNetUnfolderBase]: 248/446 cut-off events. [2024-06-14 12:44:46,294 INFO L125 PetriNetUnfolderBase]: For 7374/7380 co-relation queries the response was YES. [2024-06-14 12:44:46,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2494 conditions, 446 events. 248/446 cut-off events. For 7374/7380 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1664 event pairs, 52 based on Foata normal form. 6/449 useless extension candidates. Maximal degree in co-relation 2450. Up to 378 conditions per place. [2024-06-14 12:44:46,296 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 66 selfloop transitions, 24 changer transitions 0/92 dead transitions. [2024-06-14 12:44:46,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 92 transitions, 913 flow [2024-06-14 12:44:46,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:44:46,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:44:46,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-14 12:44:46,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3467741935483871 [2024-06-14 12:44:46,298 INFO L175 Difference]: Start difference. First operand has 90 places, 76 transitions, 609 flow. Second operand 8 states and 86 transitions. [2024-06-14 12:44:46,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 92 transitions, 913 flow [2024-06-14 12:44:46,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 92 transitions, 880 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-14 12:44:46,305 INFO L231 Difference]: Finished difference. Result has 91 places, 80 transitions, 681 flow [2024-06-14 12:44:46,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=681, PETRI_PLACES=91, PETRI_TRANSITIONS=80} [2024-06-14 12:44:46,306 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 61 predicate places. [2024-06-14 12:44:46,306 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 80 transitions, 681 flow [2024-06-14 12:44:46,306 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 12:44:46,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:46,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:46,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-14 12:44:46,306 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 12:44:46,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:46,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1230526417, now seen corresponding path program 2 times [2024-06-14 12:44:46,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:46,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026228666] [2024-06-14 12:44:46,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:46,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:46,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:46,991 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 12:44:46,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:46,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026228666] [2024-06-14 12:44:46,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026228666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:46,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:46,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:44:46,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605255690] [2024-06-14 12:44:46,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:46,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:44:46,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:46,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:44:46,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:44:47,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:44:47,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 80 transitions, 681 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 12:44:47,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:47,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:44:47,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:47,215 INFO L124 PetriNetUnfolderBase]: 264/472 cut-off events. [2024-06-14 12:44:47,216 INFO L125 PetriNetUnfolderBase]: For 8742/8748 co-relation queries the response was YES. [2024-06-14 12:44:47,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2748 conditions, 472 events. 264/472 cut-off events. For 8742/8748 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1792 event pairs, 51 based on Foata normal form. 6/475 useless extension candidates. Maximal degree in co-relation 2703. Up to 388 conditions per place. [2024-06-14 12:44:47,219 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 71 selfloop transitions, 27 changer transitions 0/100 dead transitions. [2024-06-14 12:44:47,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 100 transitions, 1063 flow [2024-06-14 12:44:47,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:44:47,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:44:47,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-14 12:44:47,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3588709677419355 [2024-06-14 12:44:47,220 INFO L175 Difference]: Start difference. First operand has 91 places, 80 transitions, 681 flow. Second operand 8 states and 89 transitions. [2024-06-14 12:44:47,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 100 transitions, 1063 flow [2024-06-14 12:44:47,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 100 transitions, 1022 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-14 12:44:47,229 INFO L231 Difference]: Finished difference. Result has 95 places, 86 transitions, 757 flow [2024-06-14 12:44:47,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=640, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=757, PETRI_PLACES=95, PETRI_TRANSITIONS=86} [2024-06-14 12:44:47,229 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 65 predicate places. [2024-06-14 12:44:47,229 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 86 transitions, 757 flow [2024-06-14 12:44:47,229 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 12:44:47,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:47,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:47,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-14 12:44:47,230 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 12:44:47,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:47,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1230259507, now seen corresponding path program 3 times [2024-06-14 12:44:47,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:47,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987294897] [2024-06-14 12:44:47,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:47,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:47,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:48,011 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 12:44:48,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:48,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987294897] [2024-06-14 12:44:48,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987294897] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:48,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:48,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:44:48,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055385567] [2024-06-14 12:44:48,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:48,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:44:48,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:48,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:44:48,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:44:48,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:44:48,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 86 transitions, 757 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 12:44:48,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:48,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:44:48,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:48,270 INFO L124 PetriNetUnfolderBase]: 262/468 cut-off events. [2024-06-14 12:44:48,270 INFO L125 PetriNetUnfolderBase]: For 8951/8951 co-relation queries the response was YES. [2024-06-14 12:44:48,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2796 conditions, 468 events. 262/468 cut-off events. For 8951/8951 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1768 event pairs, 53 based on Foata normal form. 1/468 useless extension candidates. Maximal degree in co-relation 2749. Up to 444 conditions per place. [2024-06-14 12:44:48,273 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 82 selfloop transitions, 12 changer transitions 0/96 dead transitions. [2024-06-14 12:44:48,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 96 transitions, 987 flow [2024-06-14 12:44:48,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:44:48,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:44:48,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 79 transitions. [2024-06-14 12:44:48,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3185483870967742 [2024-06-14 12:44:48,275 INFO L175 Difference]: Start difference. First operand has 95 places, 86 transitions, 757 flow. Second operand 8 states and 79 transitions. [2024-06-14 12:44:48,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 96 transitions, 987 flow [2024-06-14 12:44:48,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 96 transitions, 959 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-14 12:44:48,284 INFO L231 Difference]: Finished difference. Result has 100 places, 88 transitions, 784 flow [2024-06-14 12:44:48,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=729, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=784, PETRI_PLACES=100, PETRI_TRANSITIONS=88} [2024-06-14 12:44:48,285 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 70 predicate places. [2024-06-14 12:44:48,285 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 88 transitions, 784 flow [2024-06-14 12:44:48,285 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 12:44:48,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:48,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:48,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-14 12:44:48,286 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 12:44:48,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:48,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1237878284, now seen corresponding path program 5 times [2024-06-14 12:44:48,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:48,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846566526] [2024-06-14 12:44:48,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:48,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:48,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:49,006 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 12:44:49,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:49,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846566526] [2024-06-14 12:44:49,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846566526] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:49,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:49,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:44:49,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177054766] [2024-06-14 12:44:49,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:49,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:44:49,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:49,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:44:49,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:44:49,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:44:49,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 88 transitions, 784 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 12:44:49,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:49,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:44:49,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:49,223 INFO L124 PetriNetUnfolderBase]: 258/463 cut-off events. [2024-06-14 12:44:49,223 INFO L125 PetriNetUnfolderBase]: For 9297/9303 co-relation queries the response was YES. [2024-06-14 12:44:49,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2775 conditions, 463 events. 258/463 cut-off events. For 9297/9303 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1744 event pairs, 51 based on Foata normal form. 6/466 useless extension candidates. Maximal degree in co-relation 2726. Up to 419 conditions per place. [2024-06-14 12:44:49,226 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 79 selfloop transitions, 17 changer transitions 0/98 dead transitions. [2024-06-14 12:44:49,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 98 transitions, 1006 flow [2024-06-14 12:44:49,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:44:49,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:44:49,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 82 transitions. [2024-06-14 12:44:49,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33064516129032256 [2024-06-14 12:44:49,228 INFO L175 Difference]: Start difference. First operand has 100 places, 88 transitions, 784 flow. Second operand 8 states and 82 transitions. [2024-06-14 12:44:49,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 98 transitions, 1006 flow [2024-06-14 12:44:49,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 98 transitions, 959 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-14 12:44:49,238 INFO L231 Difference]: Finished difference. Result has 102 places, 88 transitions, 776 flow [2024-06-14 12:44:49,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=737, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=776, PETRI_PLACES=102, PETRI_TRANSITIONS=88} [2024-06-14 12:44:49,239 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 72 predicate places. [2024-06-14 12:44:49,239 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 88 transitions, 776 flow [2024-06-14 12:44:49,239 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 12:44:49,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:49,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:49,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-14 12:44:49,240 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 12:44:49,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:49,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1237878067, now seen corresponding path program 4 times [2024-06-14 12:44:49,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:49,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132333383] [2024-06-14 12:44:49,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:49,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:49,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:50,018 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 12:44:50,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:50,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132333383] [2024-06-14 12:44:50,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132333383] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:50,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:50,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:44:50,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372922966] [2024-06-14 12:44:50,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:50,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:44:50,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:50,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:44:50,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:44:50,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:44:50,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 88 transitions, 776 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 12:44:50,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:50,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:44:50,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:50,233 INFO L124 PetriNetUnfolderBase]: 256/460 cut-off events. [2024-06-14 12:44:50,234 INFO L125 PetriNetUnfolderBase]: For 9424/9430 co-relation queries the response was YES. [2024-06-14 12:44:50,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2759 conditions, 460 events. 256/460 cut-off events. For 9424/9430 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1745 event pairs, 51 based on Foata normal form. 5/462 useless extension candidates. Maximal degree in co-relation 2709. Up to 419 conditions per place. [2024-06-14 12:44:50,237 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 80 selfloop transitions, 17 changer transitions 0/99 dead transitions. [2024-06-14 12:44:50,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 99 transitions, 1020 flow [2024-06-14 12:44:50,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:44:50,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:44:50,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 81 transitions. [2024-06-14 12:44:50,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32661290322580644 [2024-06-14 12:44:50,238 INFO L175 Difference]: Start difference. First operand has 102 places, 88 transitions, 776 flow. Second operand 8 states and 81 transitions. [2024-06-14 12:44:50,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 99 transitions, 1020 flow [2024-06-14 12:44:50,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 99 transitions, 970 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-14 12:44:50,249 INFO L231 Difference]: Finished difference. Result has 103 places, 90 transitions, 793 flow [2024-06-14 12:44:50,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=726, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=793, PETRI_PLACES=103, PETRI_TRANSITIONS=90} [2024-06-14 12:44:50,250 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 73 predicate places. [2024-06-14 12:44:50,250 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 90 transitions, 793 flow [2024-06-14 12:44:50,250 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 12:44:50,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:50,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:50,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-14 12:44:50,251 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 12:44:50,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:50,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1237883864, now seen corresponding path program 6 times [2024-06-14 12:44:50,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:50,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363454647] [2024-06-14 12:44:50,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:50,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:50,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:50,991 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 12:44:50,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:50,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363454647] [2024-06-14 12:44:50,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363454647] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:50,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:50,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:44:50,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77788838] [2024-06-14 12:44:50,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:50,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:44:50,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:50,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:44:50,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:44:51,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:44:51,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 90 transitions, 793 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 12:44:51,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:51,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:44:51,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:51,301 INFO L124 PetriNetUnfolderBase]: 252/454 cut-off events. [2024-06-14 12:44:51,301 INFO L125 PetriNetUnfolderBase]: For 9744/9750 co-relation queries the response was YES. [2024-06-14 12:44:51,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2710 conditions, 454 events. 252/454 cut-off events. For 9744/9750 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1703 event pairs, 55 based on Foata normal form. 2/451 useless extension candidates. Maximal degree in co-relation 2659. Up to 293 conditions per place. [2024-06-14 12:44:51,310 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 61 selfloop transitions, 41 changer transitions 0/104 dead transitions. [2024-06-14 12:44:51,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 104 transitions, 1109 flow [2024-06-14 12:44:51,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:44:51,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:44:51,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-14 12:44:51,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36693548387096775 [2024-06-14 12:44:51,313 INFO L175 Difference]: Start difference. First operand has 103 places, 90 transitions, 793 flow. Second operand 8 states and 91 transitions. [2024-06-14 12:44:51,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 104 transitions, 1109 flow [2024-06-14 12:44:51,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 104 transitions, 1060 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-14 12:44:51,325 INFO L231 Difference]: Finished difference. Result has 105 places, 92 transitions, 863 flow [2024-06-14 12:44:51,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=744, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=863, PETRI_PLACES=105, PETRI_TRANSITIONS=92} [2024-06-14 12:44:51,325 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 75 predicate places. [2024-06-14 12:44:51,326 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 92 transitions, 863 flow [2024-06-14 12:44:51,326 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 12:44:51,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:51,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:51,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-14 12:44:51,326 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 12:44:51,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:51,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1230249587, now seen corresponding path program 1 times [2024-06-14 12:44:51,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:51,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931143865] [2024-06-14 12:44:51,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:51,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:51,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:52,268 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 12:44:52,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:52,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931143865] [2024-06-14 12:44:52,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931143865] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:52,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:52,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:44:52,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412914648] [2024-06-14 12:44:52,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:52,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:44:52,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:52,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:44:52,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:44:52,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:44:52,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 92 transitions, 863 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 12:44:52,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:52,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:44:52,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:52,529 INFO L124 PetriNetUnfolderBase]: 249/448 cut-off events. [2024-06-14 12:44:52,529 INFO L125 PetriNetUnfolderBase]: For 9892/9892 co-relation queries the response was YES. [2024-06-14 12:44:52,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2739 conditions, 448 events. 249/448 cut-off events. For 9892/9892 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1666 event pairs, 50 based on Foata normal form. 2/449 useless extension candidates. Maximal degree in co-relation 2687. Up to 418 conditions per place. [2024-06-14 12:44:52,532 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 87 selfloop transitions, 13 changer transitions 0/102 dead transitions. [2024-06-14 12:44:52,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 102 transitions, 1087 flow [2024-06-14 12:44:52,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:44:52,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:44:52,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 86 transitions. [2024-06-14 12:44:52,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30824372759856633 [2024-06-14 12:44:52,533 INFO L175 Difference]: Start difference. First operand has 105 places, 92 transitions, 863 flow. Second operand 9 states and 86 transitions. [2024-06-14 12:44:52,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 102 transitions, 1087 flow [2024-06-14 12:44:52,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 102 transitions, 984 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-14 12:44:52,544 INFO L231 Difference]: Finished difference. Result has 108 places, 92 transitions, 790 flow [2024-06-14 12:44:52,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=790, PETRI_PLACES=108, PETRI_TRANSITIONS=92} [2024-06-14 12:44:52,545 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 78 predicate places. [2024-06-14 12:44:52,545 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 92 transitions, 790 flow [2024-06-14 12:44:52,545 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 12:44:52,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:52,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:52,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-14 12:44:52,546 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 12:44:52,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:52,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1737454873, now seen corresponding path program 1 times [2024-06-14 12:44:52,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:52,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468432295] [2024-06-14 12:44:52,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:52,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:52,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:53,194 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 12:44:53,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:53,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468432295] [2024-06-14 12:44:53,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468432295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:53,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:53,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:44:53,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915632675] [2024-06-14 12:44:53,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:53,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:44:53,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:53,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:44:53,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:44:53,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:44:53,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 92 transitions, 790 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 12:44:53,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:53,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:44:53,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:53,517 INFO L124 PetriNetUnfolderBase]: 253/456 cut-off events. [2024-06-14 12:44:53,517 INFO L125 PetriNetUnfolderBase]: For 10327/10327 co-relation queries the response was YES. [2024-06-14 12:44:53,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2708 conditions, 456 events. 253/456 cut-off events. For 10327/10327 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1728 event pairs, 27 based on Foata normal form. 2/457 useless extension candidates. Maximal degree in co-relation 2655. Up to 371 conditions per place. [2024-06-14 12:44:53,520 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 89 selfloop transitions, 17 changer transitions 0/108 dead transitions. [2024-06-14 12:44:53,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 108 transitions, 1058 flow [2024-06-14 12:44:53,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:44:53,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:44:53,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 85 transitions. [2024-06-14 12:44:53,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34274193548387094 [2024-06-14 12:44:53,534 INFO L175 Difference]: Start difference. First operand has 108 places, 92 transitions, 790 flow. Second operand 8 states and 85 transitions. [2024-06-14 12:44:53,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 108 transitions, 1058 flow [2024-06-14 12:44:53,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 108 transitions, 1026 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-14 12:44:53,546 INFO L231 Difference]: Finished difference. Result has 109 places, 93 transitions, 812 flow [2024-06-14 12:44:53,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=758, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=812, PETRI_PLACES=109, PETRI_TRANSITIONS=93} [2024-06-14 12:44:53,548 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 79 predicate places. [2024-06-14 12:44:53,548 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 93 transitions, 812 flow [2024-06-14 12:44:53,548 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 12:44:53,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:53,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:53,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-14 12:44:53,549 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 12:44:53,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:53,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1737515323, now seen corresponding path program 2 times [2024-06-14 12:44:53,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:53,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348150430] [2024-06-14 12:44:53,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:53,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:53,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:54,250 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 12:44:54,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:54,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348150430] [2024-06-14 12:44:54,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348150430] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:54,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:54,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:44:54,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555795382] [2024-06-14 12:44:54,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:54,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:44:54,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:54,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:44:54,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:44:54,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:44:54,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 93 transitions, 812 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 12:44:54,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:54,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:44:54,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:54,598 INFO L124 PetriNetUnfolderBase]: 257/464 cut-off events. [2024-06-14 12:44:54,599 INFO L125 PetriNetUnfolderBase]: For 11196/11196 co-relation queries the response was YES. [2024-06-14 12:44:54,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2792 conditions, 464 events. 257/464 cut-off events. For 11196/11196 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1788 event pairs, 42 based on Foata normal form. 2/465 useless extension candidates. Maximal degree in co-relation 2738. Up to 379 conditions per place. [2024-06-14 12:44:54,603 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 85 selfloop transitions, 22 changer transitions 0/109 dead transitions. [2024-06-14 12:44:54,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 109 transitions, 1086 flow [2024-06-14 12:44:54,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:44:54,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:44:54,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-14 12:44:54,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35080645161290325 [2024-06-14 12:44:54,604 INFO L175 Difference]: Start difference. First operand has 109 places, 93 transitions, 812 flow. Second operand 8 states and 87 transitions. [2024-06-14 12:44:54,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 109 transitions, 1086 flow [2024-06-14 12:44:54,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 109 transitions, 1042 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-14 12:44:54,617 INFO L231 Difference]: Finished difference. Result has 111 places, 94 transitions, 836 flow [2024-06-14 12:44:54,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=768, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=836, PETRI_PLACES=111, PETRI_TRANSITIONS=94} [2024-06-14 12:44:54,618 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 81 predicate places. [2024-06-14 12:44:54,618 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 94 transitions, 836 flow [2024-06-14 12:44:54,618 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 12:44:54,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:54,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:54,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-14 12:44:54,619 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 12:44:54,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:54,619 INFO L85 PathProgramCache]: Analyzing trace with hash 720964227, now seen corresponding path program 1 times [2024-06-14 12:44:54,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:54,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123488905] [2024-06-14 12:44:54,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:54,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:54,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:55,336 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 12:44:55,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:55,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123488905] [2024-06-14 12:44:55,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123488905] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:55,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:55,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:44:55,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011401128] [2024-06-14 12:44:55,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:55,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:44:55,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:55,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:44:55,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:44:55,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:44:55,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 94 transitions, 836 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 12:44:55,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:55,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:44:55,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:55,642 INFO L124 PetriNetUnfolderBase]: 255/461 cut-off events. [2024-06-14 12:44:55,643 INFO L125 PetriNetUnfolderBase]: For 11399/11399 co-relation queries the response was YES. [2024-06-14 12:44:55,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2775 conditions, 461 events. 255/461 cut-off events. For 11399/11399 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1762 event pairs, 41 based on Foata normal form. 1/461 useless extension candidates. Maximal degree in co-relation 2720. Up to 371 conditions per place. [2024-06-14 12:44:55,645 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 82 selfloop transitions, 25 changer transitions 0/109 dead transitions. [2024-06-14 12:44:55,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 109 transitions, 1096 flow [2024-06-14 12:44:55,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:44:55,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:44:55,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-14 12:44:55,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-14 12:44:55,651 INFO L175 Difference]: Start difference. First operand has 111 places, 94 transitions, 836 flow. Second operand 8 states and 88 transitions. [2024-06-14 12:44:55,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 109 transitions, 1096 flow [2024-06-14 12:44:55,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 109 transitions, 1038 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-14 12:44:55,665 INFO L231 Difference]: Finished difference. Result has 113 places, 94 transitions, 837 flow [2024-06-14 12:44:55,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=778, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=837, PETRI_PLACES=113, PETRI_TRANSITIONS=94} [2024-06-14 12:44:55,666 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 83 predicate places. [2024-06-14 12:44:55,666 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 94 transitions, 837 flow [2024-06-14 12:44:55,666 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 12:44:55,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:55,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:55,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-14 12:44:55,667 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 12:44:55,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:55,667 INFO L85 PathProgramCache]: Analyzing trace with hash 90525055, now seen corresponding path program 1 times [2024-06-14 12:44:55,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:55,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383840600] [2024-06-14 12:44:55,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:55,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:55,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:56,434 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 12:44:56,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:56,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383840600] [2024-06-14 12:44:56,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383840600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:56,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:56,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:44:56,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551459713] [2024-06-14 12:44:56,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:56,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:44:56,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:56,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:44:56,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:44:56,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:44:56,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 94 transitions, 837 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 12:44:56,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:56,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:44:56,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:56,740 INFO L124 PetriNetUnfolderBase]: 261/471 cut-off events. [2024-06-14 12:44:56,741 INFO L125 PetriNetUnfolderBase]: For 12416/12416 co-relation queries the response was YES. [2024-06-14 12:44:56,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2844 conditions, 471 events. 261/471 cut-off events. For 12416/12416 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1817 event pairs, 37 based on Foata normal form. 2/472 useless extension candidates. Maximal degree in co-relation 2788. Up to 381 conditions per place. [2024-06-14 12:44:56,744 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 86 selfloop transitions, 25 changer transitions 0/113 dead transitions. [2024-06-14 12:44:56,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 113 transitions, 1139 flow [2024-06-14 12:44:56,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:44:56,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:44:56,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-14 12:44:56,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-14 12:44:56,745 INFO L175 Difference]: Start difference. First operand has 113 places, 94 transitions, 837 flow. Second operand 9 states and 97 transitions. [2024-06-14 12:44:56,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 113 transitions, 1139 flow [2024-06-14 12:44:56,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 113 transitions, 1071 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-14 12:44:56,762 INFO L231 Difference]: Finished difference. Result has 115 places, 96 transitions, 856 flow [2024-06-14 12:44:56,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=769, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=856, PETRI_PLACES=115, PETRI_TRANSITIONS=96} [2024-06-14 12:44:56,763 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 85 predicate places. [2024-06-14 12:44:56,763 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 96 transitions, 856 flow [2024-06-14 12:44:56,763 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 12:44:56,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:56,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:56,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-14 12:44:56,763 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 12:44:56,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:56,764 INFO L85 PathProgramCache]: Analyzing trace with hash 205816225, now seen corresponding path program 2 times [2024-06-14 12:44:56,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:56,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821382772] [2024-06-14 12:44:56,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:56,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:56,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:57,514 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 12:44:57,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:57,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821382772] [2024-06-14 12:44:57,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821382772] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:57,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:57,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:44:57,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167906048] [2024-06-14 12:44:57,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:57,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:44:57,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:57,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:44:57,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:44:57,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:44:57,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 96 transitions, 856 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 12:44:57,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:57,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:44:57,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:57,866 INFO L124 PetriNetUnfolderBase]: 307/545 cut-off events. [2024-06-14 12:44:57,866 INFO L125 PetriNetUnfolderBase]: For 17314/17314 co-relation queries the response was YES. [2024-06-14 12:44:57,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3550 conditions, 545 events. 307/545 cut-off events. For 17314/17314 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2178 event pairs, 50 based on Foata normal form. 2/546 useless extension candidates. Maximal degree in co-relation 3493. Up to 353 conditions per place. [2024-06-14 12:44:57,870 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 85 selfloop transitions, 36 changer transitions 0/123 dead transitions. [2024-06-14 12:44:57,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 123 transitions, 1402 flow [2024-06-14 12:44:57,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:44:57,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:44:57,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-14 12:44:57,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-14 12:44:57,871 INFO L175 Difference]: Start difference. First operand has 115 places, 96 transitions, 856 flow. Second operand 9 states and 105 transitions. [2024-06-14 12:44:57,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 123 transitions, 1402 flow [2024-06-14 12:44:57,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 123 transitions, 1331 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-14 12:44:57,889 INFO L231 Difference]: Finished difference. Result has 119 places, 105 transitions, 1026 flow [2024-06-14 12:44:57,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=785, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1026, PETRI_PLACES=119, PETRI_TRANSITIONS=105} [2024-06-14 12:44:57,889 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 89 predicate places. [2024-06-14 12:44:57,889 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 105 transitions, 1026 flow [2024-06-14 12:44:57,890 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 12:44:57,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:57,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:57,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-14 12:44:57,890 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 12:44:57,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:57,890 INFO L85 PathProgramCache]: Analyzing trace with hash 205989205, now seen corresponding path program 3 times [2024-06-14 12:44:57,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:57,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523813061] [2024-06-14 12:44:57,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:57,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:57,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:58,543 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 12:44:58,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:58,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523813061] [2024-06-14 12:44:58,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523813061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:58,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:58,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:44:58,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580796514] [2024-06-14 12:44:58,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:58,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:44:58,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:58,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:44:58,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:44:58,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:44:58,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 105 transitions, 1026 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 12:44:58,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:58,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:44:58,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:58,832 INFO L124 PetriNetUnfolderBase]: 323/571 cut-off events. [2024-06-14 12:44:58,832 INFO L125 PetriNetUnfolderBase]: For 19734/19734 co-relation queries the response was YES. [2024-06-14 12:44:58,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3948 conditions, 571 events. 323/571 cut-off events. For 19734/19734 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2303 event pairs, 55 based on Foata normal form. 2/572 useless extension candidates. Maximal degree in co-relation 3888. Up to 483 conditions per place. [2024-06-14 12:44:58,836 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 101 selfloop transitions, 23 changer transitions 0/126 dead transitions. [2024-06-14 12:44:58,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 126 transitions, 1523 flow [2024-06-14 12:44:58,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:44:58,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:44:58,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-14 12:44:58,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35842293906810035 [2024-06-14 12:44:58,837 INFO L175 Difference]: Start difference. First operand has 119 places, 105 transitions, 1026 flow. Second operand 9 states and 100 transitions. [2024-06-14 12:44:58,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 126 transitions, 1523 flow [2024-06-14 12:44:58,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 126 transitions, 1475 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-14 12:44:58,858 INFO L231 Difference]: Finished difference. Result has 125 places, 109 transitions, 1113 flow [2024-06-14 12:44:58,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=978, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1113, PETRI_PLACES=125, PETRI_TRANSITIONS=109} [2024-06-14 12:44:58,859 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 95 predicate places. [2024-06-14 12:44:58,859 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 109 transitions, 1113 flow [2024-06-14 12:44:58,859 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 12:44:58,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:58,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:58,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-14 12:44:58,860 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 12:44:58,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:58,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1855603003, now seen corresponding path program 3 times [2024-06-14 12:44:58,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:58,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556807383] [2024-06-14 12:44:58,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:58,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:58,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:59,558 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 12:44:59,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:59,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556807383] [2024-06-14 12:44:59,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556807383] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:59,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:59,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:44:59,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209446055] [2024-06-14 12:44:59,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:59,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:44:59,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:59,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:44:59,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:44:59,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:44:59,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 109 transitions, 1113 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 12:44:59,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:59,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:44:59,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:59,877 INFO L124 PetriNetUnfolderBase]: 327/579 cut-off events. [2024-06-14 12:44:59,878 INFO L125 PetriNetUnfolderBase]: For 21029/21029 co-relation queries the response was YES. [2024-06-14 12:44:59,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4089 conditions, 579 events. 327/579 cut-off events. For 21029/21029 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2346 event pairs, 56 based on Foata normal form. 2/580 useless extension candidates. Maximal degree in co-relation 4026. Up to 487 conditions per place. [2024-06-14 12:44:59,881 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 97 selfloop transitions, 24 changer transitions 0/123 dead transitions. [2024-06-14 12:44:59,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 123 transitions, 1409 flow [2024-06-14 12:44:59,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:44:59,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:44:59,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-14 12:44:59,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35080645161290325 [2024-06-14 12:44:59,883 INFO L175 Difference]: Start difference. First operand has 125 places, 109 transitions, 1113 flow. Second operand 8 states and 87 transitions. [2024-06-14 12:44:59,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 123 transitions, 1409 flow [2024-06-14 12:44:59,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 123 transitions, 1339 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-14 12:44:59,911 INFO L231 Difference]: Finished difference. Result has 127 places, 110 transitions, 1115 flow [2024-06-14 12:44:59,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1043, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1115, PETRI_PLACES=127, PETRI_TRANSITIONS=110} [2024-06-14 12:44:59,911 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 97 predicate places. [2024-06-14 12:44:59,911 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 110 transitions, 1115 flow [2024-06-14 12:44:59,911 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 12:44:59,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:59,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:59,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-14 12:44:59,912 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 12:44:59,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:59,912 INFO L85 PathProgramCache]: Analyzing trace with hash -2001108975, now seen corresponding path program 4 times [2024-06-14 12:44:59,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:59,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439026014] [2024-06-14 12:44:59,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:59,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:59,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:00,552 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 12:45:00,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:00,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439026014] [2024-06-14 12:45:00,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439026014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:00,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:00,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:45:00,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652349517] [2024-06-14 12:45:00,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:00,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:45:00,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:00,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:45:00,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:45:00,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:45:00,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 110 transitions, 1115 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 12:45:00,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:00,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:45:00,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:00,841 INFO L124 PetriNetUnfolderBase]: 321/571 cut-off events. [2024-06-14 12:45:00,842 INFO L125 PetriNetUnfolderBase]: For 21229/21229 co-relation queries the response was YES. [2024-06-14 12:45:00,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3909 conditions, 571 events. 321/571 cut-off events. For 21229/21229 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2344 event pairs, 52 based on Foata normal form. 4/574 useless extension candidates. Maximal degree in co-relation 3845. Up to 490 conditions per place. [2024-06-14 12:45:00,845 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 102 selfloop transitions, 22 changer transitions 0/126 dead transitions. [2024-06-14 12:45:00,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 126 transitions, 1479 flow [2024-06-14 12:45:00,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:45:00,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:45:00,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-14 12:45:00,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-14 12:45:00,848 INFO L175 Difference]: Start difference. First operand has 127 places, 110 transitions, 1115 flow. Second operand 9 states and 98 transitions. [2024-06-14 12:45:00,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 126 transitions, 1479 flow [2024-06-14 12:45:00,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 126 transitions, 1393 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-14 12:45:00,873 INFO L231 Difference]: Finished difference. Result has 130 places, 110 transitions, 1080 flow [2024-06-14 12:45:00,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1029, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1080, PETRI_PLACES=130, PETRI_TRANSITIONS=110} [2024-06-14 12:45:00,874 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 100 predicate places. [2024-06-14 12:45:00,874 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 110 transitions, 1080 flow [2024-06-14 12:45:00,874 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 12:45:00,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:00,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:00,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-14 12:45:00,875 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 12:45:00,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:00,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1602901613, now seen corresponding path program 1 times [2024-06-14 12:45:00,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:00,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053327399] [2024-06-14 12:45:00,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:00,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:00,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:01,716 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 12:45:01,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:01,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053327399] [2024-06-14 12:45:01,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053327399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:01,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:01,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:45:01,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936020387] [2024-06-14 12:45:01,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:01,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:45:01,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:01,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:45:01,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:45:01,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:45:01,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 110 transitions, 1080 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 12:45:01,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:01,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:45:01,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:01,961 INFO L124 PetriNetUnfolderBase]: 317/564 cut-off events. [2024-06-14 12:45:01,961 INFO L125 PetriNetUnfolderBase]: For 19600/19600 co-relation queries the response was YES. [2024-06-14 12:45:01,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3793 conditions, 564 events. 317/564 cut-off events. For 19600/19600 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2293 event pairs, 58 based on Foata normal form. 1/564 useless extension candidates. Maximal degree in co-relation 3728. Up to 527 conditions per place. [2024-06-14 12:45:01,965 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 104 selfloop transitions, 15 changer transitions 0/121 dead transitions. [2024-06-14 12:45:01,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 121 transitions, 1350 flow [2024-06-14 12:45:01,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:45:01,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:45:01,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 83 transitions. [2024-06-14 12:45:01,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3346774193548387 [2024-06-14 12:45:01,966 INFO L175 Difference]: Start difference. First operand has 130 places, 110 transitions, 1080 flow. Second operand 8 states and 83 transitions. [2024-06-14 12:45:01,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 121 transitions, 1350 flow [2024-06-14 12:45:01,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 121 transitions, 1302 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-14 12:45:01,992 INFO L231 Difference]: Finished difference. Result has 131 places, 110 transitions, 1068 flow [2024-06-14 12:45:01,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1032, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1068, PETRI_PLACES=131, PETRI_TRANSITIONS=110} [2024-06-14 12:45:01,993 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 101 predicate places. [2024-06-14 12:45:01,993 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 110 transitions, 1068 flow [2024-06-14 12:45:01,993 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 12:45:01,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:01,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:01,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-14 12:45:01,993 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 12:45:01,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:01,994 INFO L85 PathProgramCache]: Analyzing trace with hash 286742443, now seen corresponding path program 5 times [2024-06-14 12:45:01,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:01,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010237539] [2024-06-14 12:45:01,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:01,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:02,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:02,698 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 12:45:02,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:02,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010237539] [2024-06-14 12:45:02,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010237539] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:02,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:02,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:45:02,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873456147] [2024-06-14 12:45:02,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:02,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:45:02,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:02,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:45:02,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:45:02,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:45:02,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 110 transitions, 1068 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 12:45:02,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:02,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:45:02,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:02,981 INFO L124 PetriNetUnfolderBase]: 389/681 cut-off events. [2024-06-14 12:45:02,982 INFO L125 PetriNetUnfolderBase]: For 30547/30553 co-relation queries the response was YES. [2024-06-14 12:45:02,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4921 conditions, 681 events. 389/681 cut-off events. For 30547/30553 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2874 event pairs, 72 based on Foata normal form. 8/686 useless extension candidates. Maximal degree in co-relation 4855. Up to 453 conditions per place. [2024-06-14 12:45:02,986 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 97 selfloop transitions, 40 changer transitions 0/139 dead transitions. [2024-06-14 12:45:02,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 139 transitions, 1792 flow [2024-06-14 12:45:02,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:45:02,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:45:02,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-14 12:45:02,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-14 12:45:02,990 INFO L175 Difference]: Start difference. First operand has 131 places, 110 transitions, 1068 flow. Second operand 9 states and 106 transitions. [2024-06-14 12:45:02,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 139 transitions, 1792 flow [2024-06-14 12:45:03,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 139 transitions, 1754 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-14 12:45:03,025 INFO L231 Difference]: Finished difference. Result has 134 places, 119 transitions, 1258 flow [2024-06-14 12:45:03,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1030, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1258, PETRI_PLACES=134, PETRI_TRANSITIONS=119} [2024-06-14 12:45:03,026 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 104 predicate places. [2024-06-14 12:45:03,026 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 119 transitions, 1258 flow [2024-06-14 12:45:03,027 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 12:45:03,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:03,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:03,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-14 12:45:03,027 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 12:45:03,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:03,028 INFO L85 PathProgramCache]: Analyzing trace with hash 508380973, now seen corresponding path program 6 times [2024-06-14 12:45:03,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:03,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358157167] [2024-06-14 12:45:03,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:03,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:03,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:03,686 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 12:45:03,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:03,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358157167] [2024-06-14 12:45:03,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358157167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:03,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:03,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:45:03,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933594594] [2024-06-14 12:45:03,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:03,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:45:03,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:03,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:45:03,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:45:03,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:45:03,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 119 transitions, 1258 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 12:45:03,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:03,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:45:03,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:03,934 INFO L124 PetriNetUnfolderBase]: 395/691 cut-off events. [2024-06-14 12:45:03,934 INFO L125 PetriNetUnfolderBase]: For 30845/30851 co-relation queries the response was YES. [2024-06-14 12:45:03,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5168 conditions, 691 events. 395/691 cut-off events. For 30845/30851 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2940 event pairs, 70 based on Foata normal form. 6/694 useless extension candidates. Maximal degree in co-relation 5101. Up to 461 conditions per place. [2024-06-14 12:45:03,966 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 94 selfloop transitions, 47 changer transitions 0/143 dead transitions. [2024-06-14 12:45:03,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 143 transitions, 1942 flow [2024-06-14 12:45:03,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:45:03,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:45:03,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-14 12:45:03,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-14 12:45:03,968 INFO L175 Difference]: Start difference. First operand has 134 places, 119 transitions, 1258 flow. Second operand 9 states and 105 transitions. [2024-06-14 12:45:03,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 143 transitions, 1942 flow [2024-06-14 12:45:04,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 143 transitions, 1850 flow, removed 38 selfloop flow, removed 3 redundant places. [2024-06-14 12:45:04,004 INFO L231 Difference]: Finished difference. Result has 141 places, 124 transitions, 1375 flow [2024-06-14 12:45:04,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1182, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1375, PETRI_PLACES=141, PETRI_TRANSITIONS=124} [2024-06-14 12:45:04,006 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 111 predicate places. [2024-06-14 12:45:04,006 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 124 transitions, 1375 flow [2024-06-14 12:45:04,006 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 12:45:04,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:04,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:04,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-14 12:45:04,007 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 12:45:04,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:04,007 INFO L85 PathProgramCache]: Analyzing trace with hash 286981701, now seen corresponding path program 2 times [2024-06-14 12:45:04,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:04,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034239034] [2024-06-14 12:45:04,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:04,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:04,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:05,068 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 12:45:05,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:05,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034239034] [2024-06-14 12:45:05,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034239034] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:05,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:05,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:45:05,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338444538] [2024-06-14 12:45:05,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:05,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:45:05,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:05,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:45:05,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:45:05,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:45:05,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 124 transitions, 1375 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 12:45:05,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:05,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:45:05,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:05,402 INFO L124 PetriNetUnfolderBase]: 398/695 cut-off events. [2024-06-14 12:45:05,403 INFO L125 PetriNetUnfolderBase]: For 31260/31260 co-relation queries the response was YES. [2024-06-14 12:45:05,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5326 conditions, 695 events. 398/695 cut-off events. For 31260/31260 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2942 event pairs, 82 based on Foata normal form. 1/695 useless extension candidates. Maximal degree in co-relation 5256. Up to 661 conditions per place. [2024-06-14 12:45:05,407 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 117 selfloop transitions, 18 changer transitions 0/137 dead transitions. [2024-06-14 12:45:05,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 137 transitions, 1778 flow [2024-06-14 12:45:05,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:45:05,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:45:05,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 97 transitions. [2024-06-14 12:45:05,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31290322580645163 [2024-06-14 12:45:05,409 INFO L175 Difference]: Start difference. First operand has 141 places, 124 transitions, 1375 flow. Second operand 10 states and 97 transitions. [2024-06-14 12:45:05,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 137 transitions, 1778 flow [2024-06-14 12:45:05,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 137 transitions, 1682 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-14 12:45:05,455 INFO L231 Difference]: Finished difference. Result has 146 places, 126 transitions, 1351 flow [2024-06-14 12:45:05,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1280, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1351, PETRI_PLACES=146, PETRI_TRANSITIONS=126} [2024-06-14 12:45:05,456 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 116 predicate places. [2024-06-14 12:45:05,456 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 126 transitions, 1351 flow [2024-06-14 12:45:05,456 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 12:45:05,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:05,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:05,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-14 12:45:05,457 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 12:45:05,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:05,457 INFO L85 PathProgramCache]: Analyzing trace with hash 516661941, now seen corresponding path program 3 times [2024-06-14 12:45:05,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:05,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517532898] [2024-06-14 12:45:05,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:05,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:05,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:06,309 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 12:45:06,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:06,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517532898] [2024-06-14 12:45:06,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517532898] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:06,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:06,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:45:06,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695084187] [2024-06-14 12:45:06,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:06,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:45:06,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:06,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:45:06,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:45:06,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:45:06,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 126 transitions, 1351 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 12:45:06,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:06,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:45:06,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:06,572 INFO L124 PetriNetUnfolderBase]: 396/692 cut-off events. [2024-06-14 12:45:06,572 INFO L125 PetriNetUnfolderBase]: For 32095/32095 co-relation queries the response was YES. [2024-06-14 12:45:06,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5179 conditions, 692 events. 396/692 cut-off events. For 32095/32095 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2939 event pairs, 82 based on Foata normal form. 1/692 useless extension candidates. Maximal degree in co-relation 5108. Up to 659 conditions per place. [2024-06-14 12:45:06,577 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 116 selfloop transitions, 16 changer transitions 0/134 dead transitions. [2024-06-14 12:45:06,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 134 transitions, 1635 flow [2024-06-14 12:45:06,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:45:06,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:45:06,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 81 transitions. [2024-06-14 12:45:06,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32661290322580644 [2024-06-14 12:45:06,605 INFO L175 Difference]: Start difference. First operand has 146 places, 126 transitions, 1351 flow. Second operand 8 states and 81 transitions. [2024-06-14 12:45:06,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 134 transitions, 1635 flow [2024-06-14 12:45:06,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 134 transitions, 1576 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-14 12:45:06,654 INFO L231 Difference]: Finished difference. Result has 147 places, 126 transitions, 1333 flow [2024-06-14 12:45:06,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1292, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1333, PETRI_PLACES=147, PETRI_TRANSITIONS=126} [2024-06-14 12:45:06,655 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 117 predicate places. [2024-06-14 12:45:06,655 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 126 transitions, 1333 flow [2024-06-14 12:45:06,655 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 12:45:06,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:06,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:06,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-14 12:45:06,656 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 12:45:06,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:06,656 INFO L85 PathProgramCache]: Analyzing trace with hash 516661693, now seen corresponding path program 7 times [2024-06-14 12:45:06,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:06,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195995136] [2024-06-14 12:45:06,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:06,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:06,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:07,348 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 12:45:07,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:07,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195995136] [2024-06-14 12:45:07,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195995136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:07,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:07,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:45:07,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000385931] [2024-06-14 12:45:07,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:07,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:45:07,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:07,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:45:07,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:45:07,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:45:07,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 126 transitions, 1333 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 12:45:07,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:07,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:45:07,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:07,662 INFO L124 PetriNetUnfolderBase]: 388/680 cut-off events. [2024-06-14 12:45:07,662 INFO L125 PetriNetUnfolderBase]: For 32842/32842 co-relation queries the response was YES. [2024-06-14 12:45:07,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4972 conditions, 680 events. 388/680 cut-off events. For 32842/32842 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2886 event pairs, 75 based on Foata normal form. 4/683 useless extension candidates. Maximal degree in co-relation 4900. Up to 622 conditions per place. [2024-06-14 12:45:07,667 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 115 selfloop transitions, 21 changer transitions 0/138 dead transitions. [2024-06-14 12:45:07,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 138 transitions, 1717 flow [2024-06-14 12:45:07,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:45:07,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:45:07,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-06-14 12:45:07,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33691756272401435 [2024-06-14 12:45:07,668 INFO L175 Difference]: Start difference. First operand has 147 places, 126 transitions, 1333 flow. Second operand 9 states and 94 transitions. [2024-06-14 12:45:07,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 138 transitions, 1717 flow [2024-06-14 12:45:07,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 138 transitions, 1649 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-14 12:45:07,716 INFO L231 Difference]: Finished difference. Result has 148 places, 126 transitions, 1317 flow [2024-06-14 12:45:07,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1267, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1317, PETRI_PLACES=148, PETRI_TRANSITIONS=126} [2024-06-14 12:45:07,717 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 118 predicate places. [2024-06-14 12:45:07,717 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 126 transitions, 1317 flow [2024-06-14 12:45:07,717 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 12:45:07,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:07,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:07,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-14 12:45:07,718 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 12:45:07,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:07,718 INFO L85 PathProgramCache]: Analyzing trace with hash 280479823, now seen corresponding path program 8 times [2024-06-14 12:45:07,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:07,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537893356] [2024-06-14 12:45:07,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:07,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:07,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:08,518 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 12:45:08,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:08,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537893356] [2024-06-14 12:45:08,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537893356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:08,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:08,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:45:08,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438010629] [2024-06-14 12:45:08,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:08,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:45:08,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:08,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:45:08,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:45:08,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:45:08,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 126 transitions, 1317 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 12:45:08,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:08,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:45:08,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:08,825 INFO L124 PetriNetUnfolderBase]: 404/707 cut-off events. [2024-06-14 12:45:08,826 INFO L125 PetriNetUnfolderBase]: For 33390/33396 co-relation queries the response was YES. [2024-06-14 12:45:08,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5199 conditions, 707 events. 404/707 cut-off events. For 33390/33396 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3025 event pairs, 71 based on Foata normal form. 6/710 useless extension candidates. Maximal degree in co-relation 5127. Up to 612 conditions per place. [2024-06-14 12:45:08,831 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 118 selfloop transitions, 26 changer transitions 0/146 dead transitions. [2024-06-14 12:45:08,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 146 transitions, 1907 flow [2024-06-14 12:45:08,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:45:08,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:45:08,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-14 12:45:08,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-14 12:45:08,832 INFO L175 Difference]: Start difference. First operand has 148 places, 126 transitions, 1317 flow. Second operand 9 states and 99 transitions. [2024-06-14 12:45:08,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 146 transitions, 1907 flow [2024-06-14 12:45:08,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 146 transitions, 1850 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-14 12:45:08,881 INFO L231 Difference]: Finished difference. Result has 149 places, 131 transitions, 1417 flow [2024-06-14 12:45:08,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1260, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1417, PETRI_PLACES=149, PETRI_TRANSITIONS=131} [2024-06-14 12:45:08,882 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 119 predicate places. [2024-06-14 12:45:08,883 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 131 transitions, 1417 flow [2024-06-14 12:45:08,883 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 12:45:08,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:08,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:08,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-14 12:45:08,883 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 12:45:08,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:08,885 INFO L85 PathProgramCache]: Analyzing trace with hash 280486333, now seen corresponding path program 9 times [2024-06-14 12:45:08,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:08,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850436965] [2024-06-14 12:45:08,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:08,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:08,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:09,607 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 12:45:09,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:09,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850436965] [2024-06-14 12:45:09,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850436965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:09,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:09,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:45:09,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834360032] [2024-06-14 12:45:09,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:09,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:45:09,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:09,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:45:09,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:45:09,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:45:09,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 131 transitions, 1417 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 12:45:09,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:09,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:45:09,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:09,876 INFO L124 PetriNetUnfolderBase]: 398/699 cut-off events. [2024-06-14 12:45:09,876 INFO L125 PetriNetUnfolderBase]: For 33579/33585 co-relation queries the response was YES. [2024-06-14 12:45:09,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5055 conditions, 699 events. 398/699 cut-off events. For 33579/33585 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3007 event pairs, 69 based on Foata normal form. 8/704 useless extension candidates. Maximal degree in co-relation 4982. Up to 611 conditions per place. [2024-06-14 12:45:09,880 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 118 selfloop transitions, 25 changer transitions 0/145 dead transitions. [2024-06-14 12:45:09,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 145 transitions, 1827 flow [2024-06-14 12:45:09,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:45:09,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:45:09,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-14 12:45:09,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-14 12:45:09,881 INFO L175 Difference]: Start difference. First operand has 149 places, 131 transitions, 1417 flow. Second operand 9 states and 97 transitions. [2024-06-14 12:45:09,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 145 transitions, 1827 flow [2024-06-14 12:45:09,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 145 transitions, 1673 flow, removed 45 selfloop flow, removed 6 redundant places. [2024-06-14 12:45:09,932 INFO L231 Difference]: Finished difference. Result has 152 places, 131 transitions, 1320 flow [2024-06-14 12:45:09,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1263, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1320, PETRI_PLACES=152, PETRI_TRANSITIONS=131} [2024-06-14 12:45:09,933 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 122 predicate places. [2024-06-14 12:45:09,933 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 131 transitions, 1320 flow [2024-06-14 12:45:09,933 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 12:45:09,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:09,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:09,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-14 12:45:09,934 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 12:45:09,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:09,934 INFO L85 PathProgramCache]: Analyzing trace with hash 280301883, now seen corresponding path program 4 times [2024-06-14 12:45:09,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:09,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408340138] [2024-06-14 12:45:09,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:09,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:09,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:10,691 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 12:45:10,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:10,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408340138] [2024-06-14 12:45:10,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408340138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:10,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:10,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:45:10,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471779328] [2024-06-14 12:45:10,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:10,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:45:10,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:10,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:45:10,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:45:10,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:45:10,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 131 transitions, 1320 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 12:45:10,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:10,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:45:10,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:10,972 INFO L124 PetriNetUnfolderBase]: 395/694 cut-off events. [2024-06-14 12:45:10,972 INFO L125 PetriNetUnfolderBase]: For 31282/31288 co-relation queries the response was YES. [2024-06-14 12:45:10,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4830 conditions, 694 events. 395/694 cut-off events. For 31282/31288 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2989 event pairs, 65 based on Foata normal form. 2/691 useless extension candidates. Maximal degree in co-relation 4756. Up to 589 conditions per place. [2024-06-14 12:45:10,977 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 112 selfloop transitions, 28 changer transitions 0/142 dead transitions. [2024-06-14 12:45:10,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 142 transitions, 1630 flow [2024-06-14 12:45:10,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:45:10,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:45:10,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-14 12:45:10,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3467741935483871 [2024-06-14 12:45:10,978 INFO L175 Difference]: Start difference. First operand has 152 places, 131 transitions, 1320 flow. Second operand 8 states and 86 transitions. [2024-06-14 12:45:10,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 142 transitions, 1630 flow [2024-06-14 12:45:11,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 142 transitions, 1580 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-14 12:45:11,036 INFO L231 Difference]: Finished difference. Result has 153 places, 131 transitions, 1330 flow [2024-06-14 12:45:11,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1270, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1330, PETRI_PLACES=153, PETRI_TRANSITIONS=131} [2024-06-14 12:45:11,036 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 123 predicate places. [2024-06-14 12:45:11,036 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 131 transitions, 1330 flow [2024-06-14 12:45:11,037 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 12:45:11,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:11,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:11,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-14 12:45:11,037 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 12:45:11,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:11,038 INFO L85 PathProgramCache]: Analyzing trace with hash 280486581, now seen corresponding path program 4 times [2024-06-14 12:45:11,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:11,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198252106] [2024-06-14 12:45:11,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:11,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:11,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:11,832 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 12:45:11,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:11,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198252106] [2024-06-14 12:45:11,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198252106] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:11,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:11,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:45:11,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135573283] [2024-06-14 12:45:11,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:11,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:45:11,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:11,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:45:11,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:45:11,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:45:11,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 131 transitions, 1330 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 12:45:11,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:11,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:45:11,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:12,098 INFO L124 PetriNetUnfolderBase]: 391/687 cut-off events. [2024-06-14 12:45:12,098 INFO L125 PetriNetUnfolderBase]: For 30827/30833 co-relation queries the response was YES. [2024-06-14 12:45:12,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4783 conditions, 687 events. 391/687 cut-off events. For 30827/30833 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2941 event pairs, 73 based on Foata normal form. 5/689 useless extension candidates. Maximal degree in co-relation 4708. Up to 643 conditions per place. [2024-06-14 12:45:12,103 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 120 selfloop transitions, 18 changer transitions 0/140 dead transitions. [2024-06-14 12:45:12,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 140 transitions, 1632 flow [2024-06-14 12:45:12,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:45:12,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:45:12,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 82 transitions. [2024-06-14 12:45:12,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33064516129032256 [2024-06-14 12:45:12,104 INFO L175 Difference]: Start difference. First operand has 153 places, 131 transitions, 1330 flow. Second operand 8 states and 82 transitions. [2024-06-14 12:45:12,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 140 transitions, 1632 flow [2024-06-14 12:45:12,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 140 transitions, 1533 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-14 12:45:12,160 INFO L231 Difference]: Finished difference. Result has 154 places, 131 transitions, 1273 flow [2024-06-14 12:45:12,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1231, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1273, PETRI_PLACES=154, PETRI_TRANSITIONS=131} [2024-06-14 12:45:12,161 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 124 predicate places. [2024-06-14 12:45:12,161 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 131 transitions, 1273 flow [2024-06-14 12:45:12,161 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 12:45:12,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:12,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:12,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-14 12:45:12,161 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 12:45:12,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:12,162 INFO L85 PathProgramCache]: Analyzing trace with hash 280306843, now seen corresponding path program 10 times [2024-06-14 12:45:12,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:12,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758404343] [2024-06-14 12:45:12,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:12,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:12,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:12,837 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 12:45:12,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:12,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758404343] [2024-06-14 12:45:12,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758404343] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:12,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:12,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:45:12,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518226093] [2024-06-14 12:45:12,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:12,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:45:12,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:12,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:45:12,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:45:12,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:45:12,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 131 transitions, 1273 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 12:45:12,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:12,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:45:12,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:13,228 INFO L124 PetriNetUnfolderBase]: 387/681 cut-off events. [2024-06-14 12:45:13,228 INFO L125 PetriNetUnfolderBase]: For 30885/30891 co-relation queries the response was YES. [2024-06-14 12:45:13,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4597 conditions, 681 events. 387/681 cut-off events. For 30885/30891 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2913 event pairs, 60 based on Foata normal form. 2/678 useless extension candidates. Maximal degree in co-relation 4521. Up to 301 conditions per place. [2024-06-14 12:45:13,233 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 74 selfloop transitions, 77 changer transitions 0/153 dead transitions. [2024-06-14 12:45:13,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 153 transitions, 1927 flow [2024-06-14 12:45:13,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:45:13,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:45:13,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-14 12:45:13,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3906810035842294 [2024-06-14 12:45:13,234 INFO L175 Difference]: Start difference. First operand has 154 places, 131 transitions, 1273 flow. Second operand 9 states and 109 transitions. [2024-06-14 12:45:13,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 153 transitions, 1927 flow [2024-06-14 12:45:13,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 153 transitions, 1853 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-14 12:45:13,306 INFO L231 Difference]: Finished difference. Result has 156 places, 135 transitions, 1477 flow [2024-06-14 12:45:13,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1203, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1477, PETRI_PLACES=156, PETRI_TRANSITIONS=135} [2024-06-14 12:45:13,307 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 126 predicate places. [2024-06-14 12:45:13,307 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 135 transitions, 1477 flow [2024-06-14 12:45:13,307 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 12:45:13,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:13,307 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 12:45:13,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-14 12:45:13,308 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 12:45:13,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:13,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1244811915, now seen corresponding path program 1 times [2024-06-14 12:45:13,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:13,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192692488] [2024-06-14 12:45:13,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:13,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:13,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:14,173 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 12:45:14,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:14,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192692488] [2024-06-14 12:45:14,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192692488] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:14,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:14,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:45:14,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901877869] [2024-06-14 12:45:14,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:14,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:45:14,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:14,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:45:14,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:45:14,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:45:14,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 135 transitions, 1477 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 12:45:14,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:14,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:45:14,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:14,513 INFO L124 PetriNetUnfolderBase]: 391/688 cut-off events. [2024-06-14 12:45:14,514 INFO L125 PetriNetUnfolderBase]: For 32435/32435 co-relation queries the response was YES. [2024-06-14 12:45:14,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4883 conditions, 688 events. 391/688 cut-off events. For 32435/32435 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2956 event pairs, 51 based on Foata normal form. 2/689 useless extension candidates. Maximal degree in co-relation 4806. Up to 595 conditions per place. [2024-06-14 12:45:14,518 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 133 selfloop transitions, 18 changer transitions 0/153 dead transitions. [2024-06-14 12:45:14,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 153 transitions, 1839 flow [2024-06-14 12:45:14,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:45:14,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:45:14,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-06-14 12:45:14,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 12:45:14,538 INFO L175 Difference]: Start difference. First operand has 156 places, 135 transitions, 1477 flow. Second operand 9 states and 93 transitions. [2024-06-14 12:45:14,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 153 transitions, 1839 flow [2024-06-14 12:45:14,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 153 transitions, 1718 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-14 12:45:14,611 INFO L231 Difference]: Finished difference. Result has 160 places, 136 transitions, 1412 flow [2024-06-14 12:45:14,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1356, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1412, PETRI_PLACES=160, PETRI_TRANSITIONS=136} [2024-06-14 12:45:14,612 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 130 predicate places. [2024-06-14 12:45:14,612 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 136 transitions, 1412 flow [2024-06-14 12:45:14,612 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 12:45:14,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:14,612 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 12:45:14,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-14 12:45:14,612 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 12:45:14,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:14,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1971598903, now seen corresponding path program 2 times [2024-06-14 12:45:14,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:14,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103515858] [2024-06-14 12:45:14,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:14,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:14,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:15,362 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 12:45:15,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:15,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103515858] [2024-06-14 12:45:15,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103515858] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:15,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:15,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:45:15,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992280874] [2024-06-14 12:45:15,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:15,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:45:15,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:15,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:45:15,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:45:15,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:45:15,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 136 transitions, 1412 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 12:45:15,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:15,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:45:15,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:15,643 INFO L124 PetriNetUnfolderBase]: 395/696 cut-off events. [2024-06-14 12:45:15,644 INFO L125 PetriNetUnfolderBase]: For 33774/33774 co-relation queries the response was YES. [2024-06-14 12:45:15,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4901 conditions, 696 events. 395/696 cut-off events. For 33774/33774 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3017 event pairs, 61 based on Foata normal form. 2/697 useless extension candidates. Maximal degree in co-relation 4822. Up to 603 conditions per place. [2024-06-14 12:45:15,650 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 129 selfloop transitions, 23 changer transitions 0/154 dead transitions. [2024-06-14 12:45:15,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 154 transitions, 1780 flow [2024-06-14 12:45:15,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:45:15,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:45:15,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-14 12:45:15,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34050179211469533 [2024-06-14 12:45:15,652 INFO L175 Difference]: Start difference. First operand has 160 places, 136 transitions, 1412 flow. Second operand 9 states and 95 transitions. [2024-06-14 12:45:15,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 154 transitions, 1780 flow [2024-06-14 12:45:15,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 154 transitions, 1734 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-14 12:45:15,720 INFO L231 Difference]: Finished difference. Result has 162 places, 137 transitions, 1434 flow [2024-06-14 12:45:15,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1366, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1434, PETRI_PLACES=162, PETRI_TRANSITIONS=137} [2024-06-14 12:45:15,721 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 132 predicate places. [2024-06-14 12:45:15,721 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 137 transitions, 1434 flow [2024-06-14 12:45:15,721 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 12:45:15,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:15,721 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 12:45:15,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-14 12:45:15,721 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 12:45:15,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:15,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1971595028, now seen corresponding path program 1 times [2024-06-14 12:45:15,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:15,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159620848] [2024-06-14 12:45:15,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:15,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:15,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:16,699 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 12:45:16,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:16,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159620848] [2024-06-14 12:45:16,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159620848] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:16,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:16,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:45:16,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973026069] [2024-06-14 12:45:16,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:16,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:45:16,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:16,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:45:16,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:45:16,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:45:16,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 137 transitions, 1434 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 12:45:16,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:16,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:45:16,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:17,059 INFO L124 PetriNetUnfolderBase]: 393/693 cut-off events. [2024-06-14 12:45:17,060 INFO L125 PetriNetUnfolderBase]: For 33274/33274 co-relation queries the response was YES. [2024-06-14 12:45:17,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4857 conditions, 693 events. 393/693 cut-off events. For 33274/33274 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2995 event pairs, 62 based on Foata normal form. 1/693 useless extension candidates. Maximal degree in co-relation 4777. Up to 592 conditions per place. [2024-06-14 12:45:17,065 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 125 selfloop transitions, 29 changer transitions 0/156 dead transitions. [2024-06-14 12:45:17,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 156 transitions, 1843 flow [2024-06-14 12:45:17,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:45:17,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:45:17,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-14 12:45:17,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-14 12:45:17,067 INFO L175 Difference]: Start difference. First operand has 162 places, 137 transitions, 1434 flow. Second operand 9 states and 97 transitions. [2024-06-14 12:45:17,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 156 transitions, 1843 flow [2024-06-14 12:45:17,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 156 transitions, 1785 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-14 12:45:17,141 INFO L231 Difference]: Finished difference. Result has 164 places, 139 transitions, 1495 flow [2024-06-14 12:45:17,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1376, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1495, PETRI_PLACES=164, PETRI_TRANSITIONS=139} [2024-06-14 12:45:17,142 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 134 predicate places. [2024-06-14 12:45:17,142 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 139 transitions, 1495 flow [2024-06-14 12:45:17,142 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 12:45:17,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:17,143 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 12:45:17,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-14 12:45:17,143 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 12:45:17,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:17,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1971595183, now seen corresponding path program 3 times [2024-06-14 12:45:17,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:17,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118440406] [2024-06-14 12:45:17,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:17,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:17,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:18,036 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 12:45:18,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:18,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118440406] [2024-06-14 12:45:18,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118440406] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:18,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:18,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:45:18,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427482891] [2024-06-14 12:45:18,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:18,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:45:18,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:18,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:45:18,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:45:18,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:45:18,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 139 transitions, 1495 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 12:45:18,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:18,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:45:18,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:18,379 INFO L124 PetriNetUnfolderBase]: 397/701 cut-off events. [2024-06-14 12:45:18,379 INFO L125 PetriNetUnfolderBase]: For 35794/35794 co-relation queries the response was YES. [2024-06-14 12:45:18,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4943 conditions, 701 events. 397/701 cut-off events. For 35794/35794 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3054 event pairs, 62 based on Foata normal form. 2/702 useless extension candidates. Maximal degree in co-relation 4862. Up to 603 conditions per place. [2024-06-14 12:45:18,384 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 129 selfloop transitions, 26 changer transitions 0/157 dead transitions. [2024-06-14 12:45:18,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 157 transitions, 1873 flow [2024-06-14 12:45:18,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:45:18,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:45:18,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-14 12:45:18,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-14 12:45:18,385 INFO L175 Difference]: Start difference. First operand has 164 places, 139 transitions, 1495 flow. Second operand 9 states and 96 transitions. [2024-06-14 12:45:18,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 157 transitions, 1873 flow [2024-06-14 12:45:18,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 157 transitions, 1783 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-14 12:45:18,467 INFO L231 Difference]: Finished difference. Result has 166 places, 140 transitions, 1482 flow [2024-06-14 12:45:18,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1405, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1482, PETRI_PLACES=166, PETRI_TRANSITIONS=140} [2024-06-14 12:45:18,468 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 136 predicate places. [2024-06-14 12:45:18,468 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 140 transitions, 1482 flow [2024-06-14 12:45:18,468 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 12:45:18,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:18,468 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 12:45:18,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-14 12:45:18,469 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 12:45:18,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:18,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1884753271, now seen corresponding path program 1 times [2024-06-14 12:45:18,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:18,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317068036] [2024-06-14 12:45:18,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:18,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:18,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:19,476 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 12:45:19,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:19,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317068036] [2024-06-14 12:45:19,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317068036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:19,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:19,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:45:19,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823821148] [2024-06-14 12:45:19,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:19,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:45:19,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:19,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:45:19,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:45:19,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:45:19,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 140 transitions, 1482 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 12:45:19,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:19,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:45:19,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:19,847 INFO L124 PetriNetUnfolderBase]: 403/711 cut-off events. [2024-06-14 12:45:19,848 INFO L125 PetriNetUnfolderBase]: For 37485/37485 co-relation queries the response was YES. [2024-06-14 12:45:19,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5010 conditions, 711 events. 403/711 cut-off events. For 37485/37485 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3104 event pairs, 58 based on Foata normal form. 2/712 useless extension candidates. Maximal degree in co-relation 4928. Up to 613 conditions per place. [2024-06-14 12:45:19,854 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 132 selfloop transitions, 27 changer transitions 0/161 dead transitions. [2024-06-14 12:45:19,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 161 transitions, 1894 flow [2024-06-14 12:45:19,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:45:19,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:45:19,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-14 12:45:19,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-14 12:45:19,855 INFO L175 Difference]: Start difference. First operand has 166 places, 140 transitions, 1482 flow. Second operand 10 states and 106 transitions. [2024-06-14 12:45:19,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 161 transitions, 1894 flow [2024-06-14 12:45:19,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 161 transitions, 1829 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-14 12:45:19,958 INFO L231 Difference]: Finished difference. Result has 169 places, 142 transitions, 1516 flow [2024-06-14 12:45:19,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1417, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1516, PETRI_PLACES=169, PETRI_TRANSITIONS=142} [2024-06-14 12:45:19,959 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 139 predicate places. [2024-06-14 12:45:19,959 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 142 transitions, 1516 flow [2024-06-14 12:45:19,959 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 12:45:19,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:19,959 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 12:45:19,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-14 12:45:19,960 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 12:45:19,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:19,960 INFO L85 PathProgramCache]: Analyzing trace with hash 240950299, now seen corresponding path program 4 times [2024-06-14 12:45:19,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:19,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023685383] [2024-06-14 12:45:19,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:19,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:19,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:20,845 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 12:45:20,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:20,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023685383] [2024-06-14 12:45:20,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023685383] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:20,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:20,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:45:20,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221343304] [2024-06-14 12:45:20,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:20,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:45:20,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:20,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:45:20,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:45:20,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:45:20,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 142 transitions, 1516 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 12:45:20,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:20,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:45:20,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:21,252 INFO L124 PetriNetUnfolderBase]: 407/719 cut-off events. [2024-06-14 12:45:21,252 INFO L125 PetriNetUnfolderBase]: For 39053/39053 co-relation queries the response was YES. [2024-06-14 12:45:21,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5089 conditions, 719 events. 407/719 cut-off events. For 39053/39053 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3156 event pairs, 58 based on Foata normal form. 2/720 useless extension candidates. Maximal degree in co-relation 5006. Up to 595 conditions per place. [2024-06-14 12:45:21,257 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 126 selfloop transitions, 30 changer transitions 0/158 dead transitions. [2024-06-14 12:45:21,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 158 transitions, 1890 flow [2024-06-14 12:45:21,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:45:21,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:45:21,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-14 12:45:21,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-14 12:45:21,258 INFO L175 Difference]: Start difference. First operand has 169 places, 142 transitions, 1516 flow. Second operand 9 states and 98 transitions. [2024-06-14 12:45:21,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 158 transitions, 1890 flow [2024-06-14 12:45:21,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 158 transitions, 1813 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-14 12:45:21,335 INFO L231 Difference]: Finished difference. Result has 170 places, 143 transitions, 1525 flow [2024-06-14 12:45:21,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1439, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1525, PETRI_PLACES=170, PETRI_TRANSITIONS=143} [2024-06-14 12:45:21,335 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 140 predicate places. [2024-06-14 12:45:21,335 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 143 transitions, 1525 flow [2024-06-14 12:45:21,336 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 12:45:21,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:21,336 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 12:45:21,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-14 12:45:21,336 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 12:45:21,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:21,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1813113213, now seen corresponding path program 2 times [2024-06-14 12:45:21,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:21,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396049166] [2024-06-14 12:45:21,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:21,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:21,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:22,312 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 12:45:22,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:22,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396049166] [2024-06-14 12:45:22,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396049166] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:22,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:22,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:45:22,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623663335] [2024-06-14 12:45:22,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:22,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:45:22,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:22,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:45:22,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:45:22,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:45:22,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 143 transitions, 1525 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 12:45:22,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:22,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:45:22,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:22,774 INFO L124 PetriNetUnfolderBase]: 408/721 cut-off events. [2024-06-14 12:45:22,774 INFO L125 PetriNetUnfolderBase]: For 39377/39377 co-relation queries the response was YES. [2024-06-14 12:45:22,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5079 conditions, 721 events. 408/721 cut-off events. For 39377/39377 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3181 event pairs, 59 based on Foata normal form. 2/722 useless extension candidates. Maximal degree in co-relation 4995. Up to 611 conditions per place. [2024-06-14 12:45:22,780 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 131 selfloop transitions, 29 changer transitions 0/162 dead transitions. [2024-06-14 12:45:22,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 162 transitions, 1935 flow [2024-06-14 12:45:22,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:45:22,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:45:22,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-14 12:45:22,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-14 12:45:22,781 INFO L175 Difference]: Start difference. First operand has 170 places, 143 transitions, 1525 flow. Second operand 10 states and 106 transitions. [2024-06-14 12:45:22,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 162 transitions, 1935 flow [2024-06-14 12:45:22,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 162 transitions, 1859 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-14 12:45:22,862 INFO L231 Difference]: Finished difference. Result has 173 places, 145 transitions, 1556 flow [2024-06-14 12:45:22,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1449, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1556, PETRI_PLACES=173, PETRI_TRANSITIONS=145} [2024-06-14 12:45:22,863 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 143 predicate places. [2024-06-14 12:45:22,863 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 145 transitions, 1556 flow [2024-06-14 12:45:22,863 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 12:45:22,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:22,863 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 12:45:22,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-14 12:45:22,864 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 12:45:22,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:22,864 INFO L85 PathProgramCache]: Analyzing trace with hash 246520441, now seen corresponding path program 3 times [2024-06-14 12:45:22,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:22,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875701652] [2024-06-14 12:45:22,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:22,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:22,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:23,894 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 12:45:23,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:23,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875701652] [2024-06-14 12:45:23,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875701652] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:23,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:23,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:45:23,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399744555] [2024-06-14 12:45:23,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:23,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:45:23,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:23,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:45:23,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:45:23,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:45:23,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 145 transitions, 1556 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 12:45:23,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:23,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:45:23,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:24,225 INFO L124 PetriNetUnfolderBase]: 414/731 cut-off events. [2024-06-14 12:45:24,225 INFO L125 PetriNetUnfolderBase]: For 40784/40784 co-relation queries the response was YES. [2024-06-14 12:45:24,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5151 conditions, 731 events. 414/731 cut-off events. For 40784/40784 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3243 event pairs, 65 based on Foata normal form. 2/732 useless extension candidates. Maximal degree in co-relation 5066. Up to 669 conditions per place. [2024-06-14 12:45:24,230 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 142 selfloop transitions, 21 changer transitions 0/165 dead transitions. [2024-06-14 12:45:24,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 165 transitions, 1976 flow [2024-06-14 12:45:24,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:45:24,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:45:24,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-14 12:45:24,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33548387096774196 [2024-06-14 12:45:24,231 INFO L175 Difference]: Start difference. First operand has 173 places, 145 transitions, 1556 flow. Second operand 10 states and 104 transitions. [2024-06-14 12:45:24,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 165 transitions, 1976 flow [2024-06-14 12:45:24,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 165 transitions, 1891 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-14 12:45:24,323 INFO L231 Difference]: Finished difference. Result has 176 places, 148 transitions, 1569 flow [2024-06-14 12:45:24,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1471, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1569, PETRI_PLACES=176, PETRI_TRANSITIONS=148} [2024-06-14 12:45:24,324 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 146 predicate places. [2024-06-14 12:45:24,324 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 148 transitions, 1569 flow [2024-06-14 12:45:24,324 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 12:45:24,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:24,324 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 12:45:24,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-14 12:45:24,324 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 12:45:24,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:24,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1818685122, now seen corresponding path program 1 times [2024-06-14 12:45:24,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:24,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929295073] [2024-06-14 12:45:24,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:24,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:24,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:25,259 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 12:45:25,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:25,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929295073] [2024-06-14 12:45:25,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929295073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:25,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:25,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:45:25,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174014350] [2024-06-14 12:45:25,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:25,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:45:25,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:25,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:45:25,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:45:25,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:45:25,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 148 transitions, 1569 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 12:45:25,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:25,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:45:25,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:25,550 INFO L124 PetriNetUnfolderBase]: 418/739 cut-off events. [2024-06-14 12:45:25,550 INFO L125 PetriNetUnfolderBase]: For 42147/42147 co-relation queries the response was YES. [2024-06-14 12:45:25,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5193 conditions, 739 events. 418/739 cut-off events. For 42147/42147 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3283 event pairs, 71 based on Foata normal form. 2/740 useless extension candidates. Maximal degree in co-relation 5106. Up to 696 conditions per place. [2024-06-14 12:45:25,555 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 144 selfloop transitions, 17 changer transitions 0/163 dead transitions. [2024-06-14 12:45:25,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 163 transitions, 1945 flow [2024-06-14 12:45:25,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:45:25,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:45:25,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 98 transitions. [2024-06-14 12:45:25,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3161290322580645 [2024-06-14 12:45:25,557 INFO L175 Difference]: Start difference. First operand has 176 places, 148 transitions, 1569 flow. Second operand 10 states and 98 transitions. [2024-06-14 12:45:25,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 163 transitions, 1945 flow [2024-06-14 12:45:25,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 163 transitions, 1893 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-14 12:45:25,641 INFO L231 Difference]: Finished difference. Result has 179 places, 149 transitions, 1573 flow [2024-06-14 12:45:25,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1517, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1573, PETRI_PLACES=179, PETRI_TRANSITIONS=149} [2024-06-14 12:45:25,643 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 149 predicate places. [2024-06-14 12:45:25,643 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 149 transitions, 1573 flow [2024-06-14 12:45:25,643 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 12:45:25,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:25,643 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 12:45:25,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-14 12:45:25,643 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 12:45:25,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:25,644 INFO L85 PathProgramCache]: Analyzing trace with hash 2090693101, now seen corresponding path program 5 times [2024-06-14 12:45:25,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:25,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618649307] [2024-06-14 12:45:25,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:25,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:25,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:26,571 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 12:45:26,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:26,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618649307] [2024-06-14 12:45:26,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618649307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:26,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:26,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:45:26,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434739207] [2024-06-14 12:45:26,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:26,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:45:26,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:26,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:45:26,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:45:26,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:45:26,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 149 transitions, 1573 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 12:45:26,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:26,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:45:26,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:26,920 INFO L124 PetriNetUnfolderBase]: 422/747 cut-off events. [2024-06-14 12:45:26,921 INFO L125 PetriNetUnfolderBase]: For 43800/43800 co-relation queries the response was YES. [2024-06-14 12:45:26,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5259 conditions, 747 events. 422/747 cut-off events. For 43800/43800 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3348 event pairs, 71 based on Foata normal form. 2/748 useless extension candidates. Maximal degree in co-relation 5171. Up to 704 conditions per place. [2024-06-14 12:45:26,927 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 147 selfloop transitions, 15 changer transitions 0/164 dead transitions. [2024-06-14 12:45:26,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 164 transitions, 1959 flow [2024-06-14 12:45:26,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:45:26,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:45:26,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 91 transitions. [2024-06-14 12:45:26,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32616487455197135 [2024-06-14 12:45:26,928 INFO L175 Difference]: Start difference. First operand has 179 places, 149 transitions, 1573 flow. Second operand 9 states and 91 transitions. [2024-06-14 12:45:26,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 164 transitions, 1959 flow [2024-06-14 12:45:27,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 164 transitions, 1910 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-14 12:45:27,022 INFO L231 Difference]: Finished difference. Result has 180 places, 150 transitions, 1582 flow [2024-06-14 12:45:27,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1524, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1582, PETRI_PLACES=180, PETRI_TRANSITIONS=150} [2024-06-14 12:45:27,023 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 150 predicate places. [2024-06-14 12:45:27,023 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 150 transitions, 1582 flow [2024-06-14 12:45:27,023 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 12:45:27,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:27,024 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 12:45:27,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-14 12:45:27,024 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 12:45:27,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:27,024 INFO L85 PathProgramCache]: Analyzing trace with hash 2090699053, now seen corresponding path program 4 times [2024-06-14 12:45:27,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:27,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668154971] [2024-06-14 12:45:27,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:27,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:27,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:27,925 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 12:45:27,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:27,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668154971] [2024-06-14 12:45:27,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668154971] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:27,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:27,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:45:27,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267835530] [2024-06-14 12:45:27,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:27,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:45:27,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:27,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:45:27,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:45:28,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:45:28,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 150 transitions, 1582 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 12:45:28,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:28,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:45:28,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:28,245 INFO L124 PetriNetUnfolderBase]: 418/741 cut-off events. [2024-06-14 12:45:28,245 INFO L125 PetriNetUnfolderBase]: For 42233/42233 co-relation queries the response was YES. [2024-06-14 12:45:28,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5119 conditions, 741 events. 418/741 cut-off events. For 42233/42233 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3314 event pairs, 66 based on Foata normal form. 2/742 useless extension candidates. Maximal degree in co-relation 5030. Up to 662 conditions per place. [2024-06-14 12:45:28,251 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 139 selfloop transitions, 26 changer transitions 0/167 dead transitions. [2024-06-14 12:45:28,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 167 transitions, 1964 flow [2024-06-14 12:45:28,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:45:28,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:45:28,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-14 12:45:28,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-14 12:45:28,252 INFO L175 Difference]: Start difference. First operand has 180 places, 150 transitions, 1582 flow. Second operand 10 states and 107 transitions. [2024-06-14 12:45:28,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 167 transitions, 1964 flow [2024-06-14 12:45:28,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 167 transitions, 1902 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-14 12:45:28,345 INFO L231 Difference]: Finished difference. Result has 183 places, 150 transitions, 1577 flow [2024-06-14 12:45:28,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1520, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1577, PETRI_PLACES=183, PETRI_TRANSITIONS=150} [2024-06-14 12:45:28,346 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 153 predicate places. [2024-06-14 12:45:28,346 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 150 transitions, 1577 flow [2024-06-14 12:45:28,346 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 12:45:28,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:28,346 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 12:45:28,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-14 12:45:28,346 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 12:45:28,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:28,347 INFO L85 PathProgramCache]: Analyzing trace with hash 240802429, now seen corresponding path program 6 times [2024-06-14 12:45:28,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:28,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345453420] [2024-06-14 12:45:28,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:28,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:28,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:29,284 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 12:45:29,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:29,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345453420] [2024-06-14 12:45:29,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345453420] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:29,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:29,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:45:29,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049701748] [2024-06-14 12:45:29,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:29,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:45:29,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:29,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:45:29,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:45:29,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:45:29,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 150 transitions, 1577 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 12:45:29,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:29,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:45:29,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:29,642 INFO L124 PetriNetUnfolderBase]: 422/749 cut-off events. [2024-06-14 12:45:29,642 INFO L125 PetriNetUnfolderBase]: For 43772/43772 co-relation queries the response was YES. [2024-06-14 12:45:29,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5187 conditions, 749 events. 422/749 cut-off events. For 43772/43772 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3380 event pairs, 60 based on Foata normal form. 2/750 useless extension candidates. Maximal degree in co-relation 5097. Up to 649 conditions per place. [2024-06-14 12:45:29,648 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 139 selfloop transitions, 25 changer transitions 0/166 dead transitions. [2024-06-14 12:45:29,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 166 transitions, 1969 flow [2024-06-14 12:45:29,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:45:29,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:45:29,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-14 12:45:29,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34050179211469533 [2024-06-14 12:45:29,650 INFO L175 Difference]: Start difference. First operand has 183 places, 150 transitions, 1577 flow. Second operand 9 states and 95 transitions. [2024-06-14 12:45:29,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 166 transitions, 1969 flow [2024-06-14 12:45:29,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 166 transitions, 1892 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 12:45:29,757 INFO L231 Difference]: Finished difference. Result has 182 places, 151 transitions, 1580 flow [2024-06-14 12:45:29,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1500, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1580, PETRI_PLACES=182, PETRI_TRANSITIONS=151} [2024-06-14 12:45:29,758 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 152 predicate places. [2024-06-14 12:45:29,758 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 151 transitions, 1580 flow [2024-06-14 12:45:29,758 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 12:45:29,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:29,759 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 12:45:29,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-14 12:45:29,759 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 12:45:29,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:29,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1420063979, now seen corresponding path program 7 times [2024-06-14 12:45:29,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:29,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173062137] [2024-06-14 12:45:29,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:29,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:29,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:30,778 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 12:45:30,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:30,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173062137] [2024-06-14 12:45:30,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173062137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:30,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:30,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:45:30,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481862398] [2024-06-14 12:45:30,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:30,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:45:30,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:30,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:45:30,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:45:30,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:45:30,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 151 transitions, 1580 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 12:45:30,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:30,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:45:30,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:31,093 INFO L124 PetriNetUnfolderBase]: 426/758 cut-off events. [2024-06-14 12:45:31,093 INFO L125 PetriNetUnfolderBase]: For 45734/45740 co-relation queries the response was YES. [2024-06-14 12:45:31,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5258 conditions, 758 events. 426/758 cut-off events. For 45734/45740 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3437 event pairs, 69 based on Foata normal form. 6/761 useless extension candidates. Maximal degree in co-relation 5167. Up to 687 conditions per place. [2024-06-14 12:45:31,100 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 138 selfloop transitions, 25 changer transitions 0/165 dead transitions. [2024-06-14 12:45:31,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 165 transitions, 1970 flow [2024-06-14 12:45:31,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:45:31,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:45:31,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-06-14 12:45:31,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 12:45:31,102 INFO L175 Difference]: Start difference. First operand has 182 places, 151 transitions, 1580 flow. Second operand 9 states and 93 transitions. [2024-06-14 12:45:31,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 165 transitions, 1970 flow [2024-06-14 12:45:31,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 165 transitions, 1900 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-14 12:45:31,211 INFO L231 Difference]: Finished difference. Result has 184 places, 152 transitions, 1592 flow [2024-06-14 12:45:31,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1510, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1592, PETRI_PLACES=184, PETRI_TRANSITIONS=152} [2024-06-14 12:45:31,212 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 154 predicate places. [2024-06-14 12:45:31,212 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 152 transitions, 1592 flow [2024-06-14 12:45:31,212 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 12:45:31,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:31,213 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 12:45:31,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-14 12:45:31,213 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 12:45:31,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:31,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1420058027, now seen corresponding path program 5 times [2024-06-14 12:45:31,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:31,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353293488] [2024-06-14 12:45:31,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:31,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:31,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:32,278 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 12:45:32,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:32,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353293488] [2024-06-14 12:45:32,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353293488] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:32,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:32,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:45:32,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347058667] [2024-06-14 12:45:32,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:32,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:45:32,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:32,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:45:32,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:45:32,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:45:32,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 152 transitions, 1592 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 12:45:32,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:32,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:45:32,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:32,627 INFO L124 PetriNetUnfolderBase]: 432/768 cut-off events. [2024-06-14 12:45:32,627 INFO L125 PetriNetUnfolderBase]: For 47415/47421 co-relation queries the response was YES. [2024-06-14 12:45:32,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5309 conditions, 768 events. 432/768 cut-off events. For 47415/47421 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3524 event pairs, 63 based on Foata normal form. 6/771 useless extension candidates. Maximal degree in co-relation 5217. Up to 632 conditions per place. [2024-06-14 12:45:32,634 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 130 selfloop transitions, 42 changer transitions 0/174 dead transitions. [2024-06-14 12:45:32,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 174 transitions, 2077 flow [2024-06-14 12:45:32,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:45:32,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:45:32,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-14 12:45:32,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-14 12:45:32,635 INFO L175 Difference]: Start difference. First operand has 184 places, 152 transitions, 1592 flow. Second operand 10 states and 106 transitions. [2024-06-14 12:45:32,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 174 transitions, 2077 flow [2024-06-14 12:45:32,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 174 transitions, 2005 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-14 12:45:32,767 INFO L231 Difference]: Finished difference. Result has 190 places, 159 transitions, 1752 flow [2024-06-14 12:45:32,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1520, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1752, PETRI_PLACES=190, PETRI_TRANSITIONS=159} [2024-06-14 12:45:32,768 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 160 predicate places. [2024-06-14 12:45:32,768 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 159 transitions, 1752 flow [2024-06-14 12:45:32,768 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 12:45:32,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:32,768 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 12:45:32,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-14 12:45:32,769 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 12:45:32,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:32,769 INFO L85 PathProgramCache]: Analyzing trace with hash 105150444, now seen corresponding path program 2 times [2024-06-14 12:45:32,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:32,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390386565] [2024-06-14 12:45:32,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:32,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:32,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:33,677 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 12:45:33,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:33,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390386565] [2024-06-14 12:45:33,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390386565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:33,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:33,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:45:33,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747350060] [2024-06-14 12:45:33,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:33,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:45:33,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:33,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:45:33,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:45:33,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:45:33,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 159 transitions, 1752 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 12:45:33,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:33,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:45:33,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:33,960 INFO L124 PetriNetUnfolderBase]: 436/776 cut-off events. [2024-06-14 12:45:33,960 INFO L125 PetriNetUnfolderBase]: For 48695/48701 co-relation queries the response was YES. [2024-06-14 12:45:33,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5479 conditions, 776 events. 436/776 cut-off events. For 48695/48701 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3560 event pairs, 77 based on Foata normal form. 6/779 useless extension candidates. Maximal degree in co-relation 5383. Up to 726 conditions per place. [2024-06-14 12:45:33,968 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 150 selfloop transitions, 19 changer transitions 0/171 dead transitions. [2024-06-14 12:45:33,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 171 transitions, 2138 flow [2024-06-14 12:45:33,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:45:33,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:45:33,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2024-06-14 12:45:33,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-14 12:45:33,969 INFO L175 Difference]: Start difference. First operand has 190 places, 159 transitions, 1752 flow. Second operand 9 states and 90 transitions. [2024-06-14 12:45:33,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 171 transitions, 2138 flow [2024-06-14 12:45:34,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 171 transitions, 2049 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-14 12:45:34,080 INFO L231 Difference]: Finished difference. Result has 194 places, 160 transitions, 1725 flow [2024-06-14 12:45:34,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1663, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1725, PETRI_PLACES=194, PETRI_TRANSITIONS=160} [2024-06-14 12:45:34,081 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 164 predicate places. [2024-06-14 12:45:34,081 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 160 transitions, 1725 flow [2024-06-14 12:45:34,081 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 12:45:34,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:34,082 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 12:45:34,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-14 12:45:34,082 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 12:45:34,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:34,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1280313428, now seen corresponding path program 3 times [2024-06-14 12:45:34,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:34,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551072564] [2024-06-14 12:45:34,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:34,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:34,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:35,383 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 12:45:35,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:35,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551072564] [2024-06-14 12:45:35,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551072564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:35,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:35,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:45:35,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630489773] [2024-06-14 12:45:35,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:35,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:45:35,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:35,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:45:35,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:45:35,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:45:35,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 160 transitions, 1725 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 12:45:35,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:35,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:45:35,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:35,803 INFO L124 PetriNetUnfolderBase]: 440/784 cut-off events. [2024-06-14 12:45:35,804 INFO L125 PetriNetUnfolderBase]: For 50310/50316 co-relation queries the response was YES. [2024-06-14 12:45:35,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5479 conditions, 784 events. 440/784 cut-off events. For 50310/50316 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3611 event pairs, 77 based on Foata normal form. 6/787 useless extension candidates. Maximal degree in co-relation 5382. Up to 713 conditions per place. [2024-06-14 12:45:35,809 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 141 selfloop transitions, 30 changer transitions 0/173 dead transitions. [2024-06-14 12:45:35,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 173 transitions, 2119 flow [2024-06-14 12:45:35,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:45:35,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:45:35,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-06-14 12:45:35,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-14 12:45:35,818 INFO L175 Difference]: Start difference. First operand has 194 places, 160 transitions, 1725 flow. Second operand 10 states and 100 transitions. [2024-06-14 12:45:35,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 173 transitions, 2119 flow [2024-06-14 12:45:35,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 173 transitions, 2065 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-14 12:45:35,934 INFO L231 Difference]: Finished difference. Result has 197 places, 161 transitions, 1757 flow [2024-06-14 12:45:35,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1671, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1757, PETRI_PLACES=197, PETRI_TRANSITIONS=161} [2024-06-14 12:45:35,935 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 167 predicate places. [2024-06-14 12:45:35,936 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 161 transitions, 1757 flow [2024-06-14 12:45:35,939 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 12:45:35,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:35,939 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 12:45:35,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-14 12:45:35,939 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 12:45:35,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:35,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1760492011, now seen corresponding path program 8 times [2024-06-14 12:45:35,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:35,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846116741] [2024-06-14 12:45:35,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:35,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:35,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:36,869 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 12:45:36,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:36,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846116741] [2024-06-14 12:45:36,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846116741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:36,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:36,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:45:36,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201026338] [2024-06-14 12:45:36,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:36,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:45:36,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:36,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:45:36,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:45:36,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:45:36,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 161 transitions, 1757 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 12:45:36,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:36,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:45:36,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:37,153 INFO L124 PetriNetUnfolderBase]: 444/792 cut-off events. [2024-06-14 12:45:37,154 INFO L125 PetriNetUnfolderBase]: For 52198/52204 co-relation queries the response was YES. [2024-06-14 12:45:37,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5573 conditions, 792 events. 444/792 cut-off events. For 52198/52204 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3660 event pairs, 77 based on Foata normal form. 6/795 useless extension candidates. Maximal degree in co-relation 5475. Up to 742 conditions per place. [2024-06-14 12:45:37,159 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 154 selfloop transitions, 18 changer transitions 0/174 dead transitions. [2024-06-14 12:45:37,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 174 transitions, 2163 flow [2024-06-14 12:45:37,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:45:37,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:45:37,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2024-06-14 12:45:37,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-14 12:45:37,160 INFO L175 Difference]: Start difference. First operand has 197 places, 161 transitions, 1757 flow. Second operand 9 states and 90 transitions. [2024-06-14 12:45:37,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 174 transitions, 2163 flow [2024-06-14 12:45:37,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 174 transitions, 2078 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-14 12:45:37,282 INFO L231 Difference]: Finished difference. Result has 198 places, 162 transitions, 1742 flow [2024-06-14 12:45:37,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1672, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1742, PETRI_PLACES=198, PETRI_TRANSITIONS=162} [2024-06-14 12:45:37,283 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 168 predicate places. [2024-06-14 12:45:37,283 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 162 transitions, 1742 flow [2024-06-14 12:45:37,283 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 12:45:37,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:37,283 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 12:45:37,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-14 12:45:37,283 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 12:45:37,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:37,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1080652007, now seen corresponding path program 9 times [2024-06-14 12:45:37,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:37,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663507896] [2024-06-14 12:45:37,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:37,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:37,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:38,311 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 12:45:38,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:38,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663507896] [2024-06-14 12:45:38,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663507896] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:38,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:38,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:45:38,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116299990] [2024-06-14 12:45:38,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:38,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:45:38,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:38,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:45:38,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:45:38,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:45:38,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 162 transitions, 1742 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 12:45:38,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:38,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:45:38,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:38,629 INFO L124 PetriNetUnfolderBase]: 448/800 cut-off events. [2024-06-14 12:45:38,630 INFO L125 PetriNetUnfolderBase]: For 53955/53961 co-relation queries the response was YES. [2024-06-14 12:45:38,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5619 conditions, 800 events. 448/800 cut-off events. For 53955/53961 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3714 event pairs, 68 based on Foata normal form. 2/797 useless extension candidates. Maximal degree in co-relation 5520. Up to 687 conditions per place. [2024-06-14 12:45:38,636 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 144 selfloop transitions, 30 changer transitions 0/176 dead transitions. [2024-06-14 12:45:38,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 176 transitions, 2156 flow [2024-06-14 12:45:38,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:45:38,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:45:38,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-14 12:45:38,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34050179211469533 [2024-06-14 12:45:38,637 INFO L175 Difference]: Start difference. First operand has 198 places, 162 transitions, 1742 flow. Second operand 9 states and 95 transitions. [2024-06-14 12:45:38,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 176 transitions, 2156 flow [2024-06-14 12:45:38,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 176 transitions, 2096 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-14 12:45:38,761 INFO L231 Difference]: Finished difference. Result has 200 places, 163 transitions, 1778 flow [2024-06-14 12:45:38,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1682, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1778, PETRI_PLACES=200, PETRI_TRANSITIONS=163} [2024-06-14 12:45:38,762 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 170 predicate places. [2024-06-14 12:45:38,762 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 163 transitions, 1778 flow [2024-06-14 12:45:38,762 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 12:45:38,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:38,762 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 12:45:38,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-14 12:45:38,763 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 12:45:38,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:38,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1766002261, now seen corresponding path program 10 times [2024-06-14 12:45:38,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:38,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789417316] [2024-06-14 12:45:38,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:38,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:38,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:39,629 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 12:45:39,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:39,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789417316] [2024-06-14 12:45:39,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789417316] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:39,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:39,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:45:39,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637655086] [2024-06-14 12:45:39,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:39,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:45:39,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:39,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:45:39,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:45:39,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:45:39,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 163 transitions, 1778 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 12:45:39,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:39,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:45:39,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:39,939 INFO L124 PetriNetUnfolderBase]: 445/795 cut-off events. [2024-06-14 12:45:39,939 INFO L125 PetriNetUnfolderBase]: For 51417/51423 co-relation queries the response was YES. [2024-06-14 12:45:39,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5471 conditions, 795 events. 445/795 cut-off events. For 51417/51423 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3684 event pairs, 65 based on Foata normal form. 2/792 useless extension candidates. Maximal degree in co-relation 5371. Up to 682 conditions per place. [2024-06-14 12:45:39,950 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 145 selfloop transitions, 29 changer transitions 0/176 dead transitions. [2024-06-14 12:45:39,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 176 transitions, 2160 flow [2024-06-14 12:45:39,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:45:39,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:45:39,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-06-14 12:45:39,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33691756272401435 [2024-06-14 12:45:39,952 INFO L175 Difference]: Start difference. First operand has 200 places, 163 transitions, 1778 flow. Second operand 9 states and 94 transitions. [2024-06-14 12:45:39,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 176 transitions, 2160 flow [2024-06-14 12:45:40,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 176 transitions, 2074 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-14 12:45:40,091 INFO L231 Difference]: Finished difference. Result has 202 places, 163 transitions, 1754 flow [2024-06-14 12:45:40,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1692, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1754, PETRI_PLACES=202, PETRI_TRANSITIONS=163} [2024-06-14 12:45:40,091 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 172 predicate places. [2024-06-14 12:45:40,091 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 163 transitions, 1754 flow [2024-06-14 12:45:40,092 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 12:45:40,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:40,092 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 12:45:40,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-14 12:45:40,092 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 12:45:40,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:40,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1419856217, now seen corresponding path program 6 times [2024-06-14 12:45:40,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:40,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173322629] [2024-06-14 12:45:40,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:40,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:40,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:41,111 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 12:45:41,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:41,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173322629] [2024-06-14 12:45:41,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173322629] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:41,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:41,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:45:41,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071178418] [2024-06-14 12:45:41,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:41,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:45:41,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:41,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:45:41,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:45:41,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:45:41,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 163 transitions, 1754 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 12:45:41,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:41,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:45:41,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:41,458 INFO L124 PetriNetUnfolderBase]: 441/789 cut-off events. [2024-06-14 12:45:41,458 INFO L125 PetriNetUnfolderBase]: For 48814/48820 co-relation queries the response was YES. [2024-06-14 12:45:41,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5280 conditions, 789 events. 441/789 cut-off events. For 48814/48820 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3698 event pairs, 63 based on Foata normal form. 6/792 useless extension candidates. Maximal degree in co-relation 5179. Up to 653 conditions per place. [2024-06-14 12:45:41,465 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 136 selfloop transitions, 41 changer transitions 0/179 dead transitions. [2024-06-14 12:45:41,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 179 transitions, 2158 flow [2024-06-14 12:45:41,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:45:41,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:45:41,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-14 12:45:41,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-14 12:45:41,466 INFO L175 Difference]: Start difference. First operand has 202 places, 163 transitions, 1754 flow. Second operand 10 states and 108 transitions. [2024-06-14 12:45:41,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 179 transitions, 2158 flow [2024-06-14 12:45:41,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 179 transitions, 2025 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-14 12:45:41,588 INFO L231 Difference]: Finished difference. Result has 204 places, 163 transitions, 1708 flow [2024-06-14 12:45:41,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1621, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1708, PETRI_PLACES=204, PETRI_TRANSITIONS=163} [2024-06-14 12:45:41,588 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 174 predicate places. [2024-06-14 12:45:41,588 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 163 transitions, 1708 flow [2024-06-14 12:45:41,589 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 12:45:41,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:41,589 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 12:45:41,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-14 12:45:41,589 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 12:45:41,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:41,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1163355707, now seen corresponding path program 7 times [2024-06-14 12:45:41,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:41,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625534090] [2024-06-14 12:45:41,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:41,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:41,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:42,454 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 12:45:42,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:42,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625534090] [2024-06-14 12:45:42,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625534090] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:42,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:42,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:45:42,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182054179] [2024-06-14 12:45:42,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:42,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:45:42,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:42,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:45:42,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:45:42,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:45:42,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 163 transitions, 1708 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 12:45:42,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:42,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:45:42,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:42,778 INFO L124 PetriNetUnfolderBase]: 437/782 cut-off events. [2024-06-14 12:45:42,778 INFO L125 PetriNetUnfolderBase]: For 45250/45250 co-relation queries the response was YES. [2024-06-14 12:45:42,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5063 conditions, 782 events. 437/782 cut-off events. For 45250/45250 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3617 event pairs, 75 based on Foata normal form. 2/783 useless extension candidates. Maximal degree in co-relation 4961. Up to 727 conditions per place. [2024-06-14 12:45:42,785 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 151 selfloop transitions, 22 changer transitions 0/175 dead transitions. [2024-06-14 12:45:42,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 175 transitions, 2086 flow [2024-06-14 12:45:42,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:45:42,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:45:42,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-06-14 12:45:42,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-14 12:45:42,786 INFO L175 Difference]: Start difference. First operand has 204 places, 163 transitions, 1708 flow. Second operand 10 states and 100 transitions. [2024-06-14 12:45:42,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 175 transitions, 2086 flow [2024-06-14 12:45:42,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 175 transitions, 1948 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-14 12:45:42,907 INFO L231 Difference]: Finished difference. Result has 205 places, 163 transitions, 1619 flow [2024-06-14 12:45:42,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1570, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1619, PETRI_PLACES=205, PETRI_TRANSITIONS=163} [2024-06-14 12:45:42,907 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 175 predicate places. [2024-06-14 12:45:42,908 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 163 transitions, 1619 flow [2024-06-14 12:45:42,908 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 12:45:42,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:42,908 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 12:45:42,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-14 12:45:42,908 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 12:45:42,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:42,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1765848439, now seen corresponding path program 8 times [2024-06-14 12:45:42,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:42,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986891294] [2024-06-14 12:45:42,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:42,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:42,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:43,933 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 12:45:43,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:43,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986891294] [2024-06-14 12:45:43,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986891294] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:43,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:43,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:45:43,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784545535] [2024-06-14 12:45:43,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:43,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:45:43,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:43,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:45:43,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:45:43,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:45:43,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 163 transitions, 1619 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 12:45:43,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:43,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:45:43,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:44,233 INFO L124 PetriNetUnfolderBase]: 433/777 cut-off events. [2024-06-14 12:45:44,233 INFO L125 PetriNetUnfolderBase]: For 42025/42031 co-relation queries the response was YES. [2024-06-14 12:45:44,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4785 conditions, 777 events. 433/777 cut-off events. For 42025/42031 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3614 event pairs, 65 based on Foata normal form. 2/774 useless extension candidates. Maximal degree in co-relation 4683. Up to 654 conditions per place. [2024-06-14 12:45:44,239 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 142 selfloop transitions, 32 changer transitions 0/176 dead transitions. [2024-06-14 12:45:44,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 176 transitions, 2005 flow [2024-06-14 12:45:44,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:45:44,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:45:44,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-14 12:45:44,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-14 12:45:44,240 INFO L175 Difference]: Start difference. First operand has 205 places, 163 transitions, 1619 flow. Second operand 9 states and 97 transitions. [2024-06-14 12:45:44,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 176 transitions, 2005 flow [2024-06-14 12:45:44,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 176 transitions, 1952 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-14 12:45:44,347 INFO L231 Difference]: Finished difference. Result has 205 places, 163 transitions, 1636 flow [2024-06-14 12:45:44,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1566, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1636, PETRI_PLACES=205, PETRI_TRANSITIONS=163} [2024-06-14 12:45:44,348 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 175 predicate places. [2024-06-14 12:45:44,348 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 163 transitions, 1636 flow [2024-06-14 12:45:44,348 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 12:45:44,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:44,348 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 12:45:44,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-14 12:45:44,349 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 12:45:44,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:44,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1163347988, now seen corresponding path program 4 times [2024-06-14 12:45:44,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:44,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745746026] [2024-06-14 12:45:44,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:44,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:44,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:45,257 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 12:45:45,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:45,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745746026] [2024-06-14 12:45:45,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745746026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:45,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:45,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:45:45,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016261333] [2024-06-14 12:45:45,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:45,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:45:45,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:45,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:45:45,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:45:45,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:45:45,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 163 transitions, 1636 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 12:45:45,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:45,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:45:45,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:45,539 INFO L124 PetriNetUnfolderBase]: 437/784 cut-off events. [2024-06-14 12:45:45,540 INFO L125 PetriNetUnfolderBase]: For 43539/43539 co-relation queries the response was YES. [2024-06-14 12:45:45,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4881 conditions, 784 events. 437/784 cut-off events. For 43539/43539 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 3661 event pairs, 78 based on Foata normal form. 2/785 useless extension candidates. Maximal degree in co-relation 4778. Up to 743 conditions per place. [2024-06-14 12:45:45,546 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 155 selfloop transitions, 17 changer transitions 0/174 dead transitions. [2024-06-14 12:45:45,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 174 transitions, 2024 flow [2024-06-14 12:45:45,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:45:45,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:45:45,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 89 transitions. [2024-06-14 12:45:45,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31899641577060933 [2024-06-14 12:45:45,548 INFO L175 Difference]: Start difference. First operand has 205 places, 163 transitions, 1636 flow. Second operand 9 states and 89 transitions. [2024-06-14 12:45:45,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 174 transitions, 2024 flow [2024-06-14 12:45:45,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 174 transitions, 1942 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-14 12:45:45,667 INFO L231 Difference]: Finished difference. Result has 207 places, 164 transitions, 1615 flow [2024-06-14 12:45:45,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1554, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1615, PETRI_PLACES=207, PETRI_TRANSITIONS=164} [2024-06-14 12:45:45,668 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 177 predicate places. [2024-06-14 12:45:45,668 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 164 transitions, 1615 flow [2024-06-14 12:45:45,668 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 12:45:45,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:45,668 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 12:45:45,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-14 12:45:45,668 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 12:45:45,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:45,669 INFO L85 PathProgramCache]: Analyzing trace with hash 105142725, now seen corresponding path program 9 times [2024-06-14 12:45:45,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:45,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742688356] [2024-06-14 12:45:45,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:45,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:45,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:46,854 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 12:45:46,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:46,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742688356] [2024-06-14 12:45:46,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742688356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:46,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:46,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:45:46,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643107011] [2024-06-14 12:45:46,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:46,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:45:46,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:46,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:45:46,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:45:46,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:45:46,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 164 transitions, 1615 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 12:45:46,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:46,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:45:46,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:47,200 INFO L124 PetriNetUnfolderBase]: 443/795 cut-off events. [2024-06-14 12:45:47,200 INFO L125 PetriNetUnfolderBase]: For 44692/44698 co-relation queries the response was YES. [2024-06-14 12:45:47,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4911 conditions, 795 events. 443/795 cut-off events. For 44692/44698 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3743 event pairs, 72 based on Foata normal form. 6/798 useless extension candidates. Maximal degree in co-relation 4807. Up to 706 conditions per place. [2024-06-14 12:45:47,206 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 152 selfloop transitions, 28 changer transitions 0/182 dead transitions. [2024-06-14 12:45:47,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 182 transitions, 2193 flow [2024-06-14 12:45:47,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:45:47,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:45:47,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-14 12:45:47,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-14 12:45:47,208 INFO L175 Difference]: Start difference. First operand has 207 places, 164 transitions, 1615 flow. Second operand 10 states and 106 transitions. [2024-06-14 12:45:47,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 182 transitions, 2193 flow [2024-06-14 12:45:47,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 182 transitions, 2144 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-14 12:45:47,329 INFO L231 Difference]: Finished difference. Result has 210 places, 166 transitions, 1661 flow [2024-06-14 12:45:47,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1566, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1661, PETRI_PLACES=210, PETRI_TRANSITIONS=166} [2024-06-14 12:45:47,331 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 180 predicate places. [2024-06-14 12:45:47,331 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 166 transitions, 1661 flow [2024-06-14 12:45:47,332 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 12:45:47,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:47,332 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 12:45:47,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-14 12:45:47,332 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 12:45:47,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:47,332 INFO L85 PathProgramCache]: Analyzing trace with hash 104940915, now seen corresponding path program 10 times [2024-06-14 12:45:47,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:47,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166305492] [2024-06-14 12:45:47,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:47,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:47,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:48,304 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 12:45:48,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:48,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166305492] [2024-06-14 12:45:48,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166305492] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:48,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:48,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:45:48,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049542205] [2024-06-14 12:45:48,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:48,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:45:48,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:48,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:45:48,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:45:48,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:45:48,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 166 transitions, 1661 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 12:45:48,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:48,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:45:48,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:48,640 INFO L124 PetriNetUnfolderBase]: 439/789 cut-off events. [2024-06-14 12:45:48,640 INFO L125 PetriNetUnfolderBase]: For 41186/41192 co-relation queries the response was YES. [2024-06-14 12:45:48,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4761 conditions, 789 events. 439/789 cut-off events. For 41186/41192 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 3708 event pairs, 72 based on Foata normal form. 6/792 useless extension candidates. Maximal degree in co-relation 4656. Up to 703 conditions per place. [2024-06-14 12:45:48,646 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 150 selfloop transitions, 29 changer transitions 0/181 dead transitions. [2024-06-14 12:45:48,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 181 transitions, 2065 flow [2024-06-14 12:45:48,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:45:48,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:45:48,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-14 12:45:48,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-14 12:45:48,648 INFO L175 Difference]: Start difference. First operand has 210 places, 166 transitions, 1661 flow. Second operand 10 states and 106 transitions. [2024-06-14 12:45:48,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 181 transitions, 2065 flow [2024-06-14 12:45:48,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 181 transitions, 1979 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-14 12:45:48,763 INFO L231 Difference]: Finished difference. Result has 212 places, 166 transitions, 1638 flow [2024-06-14 12:45:48,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1575, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1638, PETRI_PLACES=212, PETRI_TRANSITIONS=166} [2024-06-14 12:45:48,764 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 182 predicate places. [2024-06-14 12:45:48,764 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 166 transitions, 1638 flow [2024-06-14 12:45:48,764 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 12:45:48,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:48,764 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 12:45:48,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-14 12:45:48,765 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 12:45:48,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:48,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1153824788, now seen corresponding path program 5 times [2024-06-14 12:45:48,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:48,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52062015] [2024-06-14 12:45:48,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:48,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:48,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:49,602 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 12:45:49,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:49,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52062015] [2024-06-14 12:45:49,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52062015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:49,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:49,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:45:49,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389250890] [2024-06-14 12:45:49,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:49,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:45:49,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:49,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:45:49,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:45:49,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:45:49,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 166 transitions, 1638 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 12:45:49,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:49,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:45:49,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:49,887 INFO L124 PetriNetUnfolderBase]: 436/783 cut-off events. [2024-06-14 12:45:49,888 INFO L125 PetriNetUnfolderBase]: For 37237/37237 co-relation queries the response was YES. [2024-06-14 12:45:49,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4580 conditions, 783 events. 436/783 cut-off events. For 37237/37237 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3664 event pairs, 76 based on Foata normal form. 2/784 useless extension candidates. Maximal degree in co-relation 4474. Up to 728 conditions per place. [2024-06-14 12:45:49,894 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 157 selfloop transitions, 19 changer transitions 0/178 dead transitions. [2024-06-14 12:45:49,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 178 transitions, 2018 flow [2024-06-14 12:45:49,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:45:49,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:45:49,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 97 transitions. [2024-06-14 12:45:49,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31290322580645163 [2024-06-14 12:45:49,896 INFO L175 Difference]: Start difference. First operand has 212 places, 166 transitions, 1638 flow. Second operand 10 states and 97 transitions. [2024-06-14 12:45:49,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 178 transitions, 2018 flow [2024-06-14 12:45:50,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 178 transitions, 1942 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-14 12:45:50,008 INFO L231 Difference]: Finished difference. Result has 212 places, 166 transitions, 1604 flow [2024-06-14 12:45:50,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1562, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1604, PETRI_PLACES=212, PETRI_TRANSITIONS=166} [2024-06-14 12:45:50,009 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 182 predicate places. [2024-06-14 12:45:50,009 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 166 transitions, 1604 flow [2024-06-14 12:45:50,009 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 12:45:50,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:50,009 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 12:45:50,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-14 12:45:50,010 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 12:45:50,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:50,010 INFO L85 PathProgramCache]: Analyzing trace with hash 789487974, now seen corresponding path program 1 times [2024-06-14 12:45:50,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:50,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59599533] [2024-06-14 12:45:50,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:50,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:50,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:50,953 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 12:45:50,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:50,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59599533] [2024-06-14 12:45:50,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59599533] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:50,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:50,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:45:50,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456452929] [2024-06-14 12:45:50,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:50,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:45:50,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:50,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:45:50,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:45:51,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:45:51,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 166 transitions, 1604 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 12:45:51,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:51,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:45:51,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:51,347 INFO L124 PetriNetUnfolderBase]: 440/791 cut-off events. [2024-06-14 12:45:51,348 INFO L125 PetriNetUnfolderBase]: For 38562/38562 co-relation queries the response was YES. [2024-06-14 12:45:51,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4627 conditions, 791 events. 440/791 cut-off events. For 38562/38562 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 3733 event pairs, 59 based on Foata normal form. 2/792 useless extension candidates. Maximal degree in co-relation 4520. Up to 690 conditions per place. [2024-06-14 12:45:51,354 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 165 selfloop transitions, 19 changer transitions 0/186 dead transitions. [2024-06-14 12:45:51,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 186 transitions, 2052 flow [2024-06-14 12:45:51,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:45:51,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:45:51,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-14 12:45:51,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3258064516129032 [2024-06-14 12:45:51,356 INFO L175 Difference]: Start difference. First operand has 212 places, 166 transitions, 1604 flow. Second operand 10 states and 101 transitions. [2024-06-14 12:45:51,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 186 transitions, 2052 flow [2024-06-14 12:45:51,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 186 transitions, 1969 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-14 12:45:51,483 INFO L231 Difference]: Finished difference. Result has 213 places, 167 transitions, 1595 flow [2024-06-14 12:45:51,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1521, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1595, PETRI_PLACES=213, PETRI_TRANSITIONS=167} [2024-06-14 12:45:51,484 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 183 predicate places. [2024-06-14 12:45:51,484 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 167 transitions, 1595 flow [2024-06-14 12:45:51,484 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 12:45:51,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:51,484 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 12:45:51,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-14 12:45:51,485 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 12:45:51,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:51,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1586600704, now seen corresponding path program 2 times [2024-06-14 12:45:51,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:51,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629021371] [2024-06-14 12:45:51,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:51,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:51,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:52,347 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 12:45:52,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:52,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629021371] [2024-06-14 12:45:52,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629021371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:52,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:52,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:45:52,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261650256] [2024-06-14 12:45:52,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:52,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:45:52,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:52,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:45:52,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:45:52,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:45:52,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 167 transitions, 1595 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 12:45:52,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:52,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:45:52,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:52,709 INFO L124 PetriNetUnfolderBase]: 444/799 cut-off events. [2024-06-14 12:45:52,709 INFO L125 PetriNetUnfolderBase]: For 39699/39699 co-relation queries the response was YES. [2024-06-14 12:45:52,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4684 conditions, 799 events. 444/799 cut-off events. For 39699/39699 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 3809 event pairs, 66 based on Foata normal form. 2/800 useless extension candidates. Maximal degree in co-relation 4576. Up to 698 conditions per place. [2024-06-14 12:45:52,715 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 161 selfloop transitions, 24 changer transitions 0/187 dead transitions. [2024-06-14 12:45:52,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 187 transitions, 2049 flow [2024-06-14 12:45:52,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:45:52,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:45:52,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-14 12:45:52,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33225806451612905 [2024-06-14 12:45:52,716 INFO L175 Difference]: Start difference. First operand has 213 places, 167 transitions, 1595 flow. Second operand 10 states and 103 transitions. [2024-06-14 12:45:52,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 187 transitions, 2049 flow [2024-06-14 12:45:52,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 187 transitions, 1985 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-14 12:45:52,841 INFO L231 Difference]: Finished difference. Result has 215 places, 168 transitions, 1617 flow [2024-06-14 12:45:52,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1531, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1617, PETRI_PLACES=215, PETRI_TRANSITIONS=168} [2024-06-14 12:45:52,842 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 185 predicate places. [2024-06-14 12:45:52,842 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 168 transitions, 1617 flow [2024-06-14 12:45:52,842 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 12:45:52,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:52,842 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 12:45:52,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-14 12:45:52,842 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 12:45:52,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:52,843 INFO L85 PathProgramCache]: Analyzing trace with hash 792284484, now seen corresponding path program 3 times [2024-06-14 12:45:52,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:52,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661600500] [2024-06-14 12:45:52,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:52,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:52,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:53,645 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 12:45:53,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:53,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661600500] [2024-06-14 12:45:53,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661600500] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:53,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:53,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:45:53,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460667677] [2024-06-14 12:45:53,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:53,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:45:53,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:53,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:45:53,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:45:53,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:45:53,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 168 transitions, 1617 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 12:45:53,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:53,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:45:53,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:54,026 INFO L124 PetriNetUnfolderBase]: 455/820 cut-off events. [2024-06-14 12:45:54,026 INFO L125 PetriNetUnfolderBase]: For 48188/48188 co-relation queries the response was YES. [2024-06-14 12:45:54,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5016 conditions, 820 events. 455/820 cut-off events. For 48188/48188 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 3939 event pairs, 69 based on Foata normal form. 2/821 useless extension candidates. Maximal degree in co-relation 4907. Up to 692 conditions per place. [2024-06-14 12:45:54,033 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 158 selfloop transitions, 30 changer transitions 0/190 dead transitions. [2024-06-14 12:45:54,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 190 transitions, 2263 flow [2024-06-14 12:45:54,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:45:54,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:45:54,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-14 12:45:54,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-14 12:45:54,034 INFO L175 Difference]: Start difference. First operand has 215 places, 168 transitions, 1617 flow. Second operand 10 states and 107 transitions. [2024-06-14 12:45:54,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 190 transitions, 2263 flow [2024-06-14 12:45:54,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 190 transitions, 2187 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-14 12:45:54,172 INFO L231 Difference]: Finished difference. Result has 217 places, 170 transitions, 1675 flow [2024-06-14 12:45:54,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1541, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1675, PETRI_PLACES=217, PETRI_TRANSITIONS=170} [2024-06-14 12:45:54,173 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 187 predicate places. [2024-06-14 12:45:54,173 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 170 transitions, 1675 flow [2024-06-14 12:45:54,173 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 12:45:54,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:54,174 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 12:45:54,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-14 12:45:54,174 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 12:45:54,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:54,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1217236344, now seen corresponding path program 4 times [2024-06-14 12:45:54,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:54,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967664400] [2024-06-14 12:45:54,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:54,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:54,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:55,065 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 12:45:55,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:55,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967664400] [2024-06-14 12:45:55,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967664400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:55,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:55,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:45:55,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519513909] [2024-06-14 12:45:55,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:55,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:45:55,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:55,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:45:55,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:45:55,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:45:55,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 170 transitions, 1675 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 12:45:55,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:55,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:45:55,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:55,533 INFO L124 PetriNetUnfolderBase]: 452/815 cut-off events. [2024-06-14 12:45:55,534 INFO L125 PetriNetUnfolderBase]: For 43717/43717 co-relation queries the response was YES. [2024-06-14 12:45:55,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4810 conditions, 815 events. 452/815 cut-off events. For 43717/43717 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 3914 event pairs, 70 based on Foata normal form. 2/816 useless extension candidates. Maximal degree in co-relation 4700. Up to 706 conditions per place. [2024-06-14 12:45:55,540 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 157 selfloop transitions, 30 changer transitions 0/189 dead transitions. [2024-06-14 12:45:55,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 189 transitions, 2105 flow [2024-06-14 12:45:55,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:45:55,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:45:55,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-14 12:45:55,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-14 12:45:55,541 INFO L175 Difference]: Start difference. First operand has 217 places, 170 transitions, 1675 flow. Second operand 10 states and 105 transitions. [2024-06-14 12:45:55,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 189 transitions, 2105 flow [2024-06-14 12:45:55,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 189 transitions, 2002 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-14 12:45:55,670 INFO L231 Difference]: Finished difference. Result has 221 places, 170 transitions, 1637 flow [2024-06-14 12:45:55,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1572, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1637, PETRI_PLACES=221, PETRI_TRANSITIONS=170} [2024-06-14 12:45:55,671 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 191 predicate places. [2024-06-14 12:45:55,671 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 170 transitions, 1637 flow [2024-06-14 12:45:55,671 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 12:45:55,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:55,671 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 12:45:55,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-14 12:45:55,672 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 12:45:55,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:55,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1217236530, now seen corresponding path program 1 times [2024-06-14 12:45:55,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:55,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581151982] [2024-06-14 12:45:55,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:55,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:55,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:56,746 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 12:45:56,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:56,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581151982] [2024-06-14 12:45:56,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581151982] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:56,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:56,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:45:56,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715615246] [2024-06-14 12:45:56,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:56,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:45:56,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:56,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:45:56,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:45:56,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:45:56,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 170 transitions, 1637 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 12:45:56,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:56,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:45:56,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:57,182 INFO L124 PetriNetUnfolderBase]: 450/812 cut-off events. [2024-06-14 12:45:57,182 INFO L125 PetriNetUnfolderBase]: For 38266/38266 co-relation queries the response was YES. [2024-06-14 12:45:57,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4643 conditions, 812 events. 450/812 cut-off events. For 38266/38266 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 3884 event pairs, 69 based on Foata normal form. 1/812 useless extension candidates. Maximal degree in co-relation 4531. Up to 700 conditions per place. [2024-06-14 12:45:57,190 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 154 selfloop transitions, 33 changer transitions 0/189 dead transitions. [2024-06-14 12:45:57,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 189 transitions, 2069 flow [2024-06-14 12:45:57,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:45:57,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:45:57,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-14 12:45:57,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-14 12:45:57,206 INFO L175 Difference]: Start difference. First operand has 221 places, 170 transitions, 1637 flow. Second operand 10 states and 106 transitions. [2024-06-14 12:45:57,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 189 transitions, 2069 flow [2024-06-14 12:45:57,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 189 transitions, 1998 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-14 12:45:57,338 INFO L231 Difference]: Finished difference. Result has 222 places, 170 transitions, 1640 flow [2024-06-14 12:45:57,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1566, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1640, PETRI_PLACES=222, PETRI_TRANSITIONS=170} [2024-06-14 12:45:57,338 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 192 predicate places. [2024-06-14 12:45:57,338 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 170 transitions, 1640 flow [2024-06-14 12:45:57,339 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 12:45:57,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:57,339 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 12:45:57,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-14 12:45:57,339 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 12:45:57,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:57,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1702191768, now seen corresponding path program 1 times [2024-06-14 12:45:57,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:57,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701505853] [2024-06-14 12:45:57,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:57,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:57,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:58,390 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 12:45:58,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:58,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701505853] [2024-06-14 12:45:58,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701505853] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:58,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:58,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:45:58,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714455477] [2024-06-14 12:45:58,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:58,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:45:58,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:58,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:45:58,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:45:58,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:45:58,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 170 transitions, 1640 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 12:45:58,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:58,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:45:58,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:58,845 INFO L124 PetriNetUnfolderBase]: 466/848 cut-off events. [2024-06-14 12:45:58,845 INFO L125 PetriNetUnfolderBase]: For 64521/64521 co-relation queries the response was YES. [2024-06-14 12:45:58,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4792 conditions, 848 events. 466/848 cut-off events. For 64521/64521 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4122 event pairs, 70 based on Foata normal form. 10/857 useless extension candidates. Maximal degree in co-relation 4679. Up to 708 conditions per place. [2024-06-14 12:45:58,853 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 158 selfloop transitions, 24 changer transitions 11/195 dead transitions. [2024-06-14 12:45:58,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 195 transitions, 2126 flow [2024-06-14 12:45:58,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:45:58,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:45:58,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-14 12:45:58,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-14 12:45:58,854 INFO L175 Difference]: Start difference. First operand has 222 places, 170 transitions, 1640 flow. Second operand 11 states and 117 transitions. [2024-06-14 12:45:58,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 195 transitions, 2126 flow [2024-06-14 12:45:58,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 195 transitions, 1967 flow, removed 12 selfloop flow, removed 12 redundant places. [2024-06-14 12:45:59,001 INFO L231 Difference]: Finished difference. Result has 221 places, 167 transitions, 1504 flow [2024-06-14 12:45:59,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1481, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1504, PETRI_PLACES=221, PETRI_TRANSITIONS=167} [2024-06-14 12:45:59,002 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 191 predicate places. [2024-06-14 12:45:59,002 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 167 transitions, 1504 flow [2024-06-14 12:45:59,002 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 12:45:59,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:59,002 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 12:45:59,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-14 12:45:59,002 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 12:45:59,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:59,003 INFO L85 PathProgramCache]: Analyzing trace with hash 827676518, now seen corresponding path program 5 times [2024-06-14 12:45:59,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:59,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875237232] [2024-06-14 12:45:59,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:59,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:59,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:59,902 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 12:45:59,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:59,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875237232] [2024-06-14 12:45:59,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875237232] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:59,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:59,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:45:59,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309296660] [2024-06-14 12:45:59,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:59,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:45:59,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:59,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:45:59,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:45:59,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:45:59,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 167 transitions, 1504 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 12:45:59,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:59,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:45:59,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:00,342 INFO L124 PetriNetUnfolderBase]: 444/806 cut-off events. [2024-06-14 12:46:00,342 INFO L125 PetriNetUnfolderBase]: For 42770/42770 co-relation queries the response was YES. [2024-06-14 12:46:00,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4511 conditions, 806 events. 444/806 cut-off events. For 42770/42770 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 3909 event pairs, 65 based on Foata normal form. 2/807 useless extension candidates. Maximal degree in co-relation 4400. Up to 610 conditions per place. [2024-06-14 12:46:00,350 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 136 selfloop transitions, 47 changer transitions 0/185 dead transitions. [2024-06-14 12:46:00,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 185 transitions, 1954 flow [2024-06-14 12:46:00,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:46:00,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:46:00,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-14 12:46:00,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-14 12:46:00,355 INFO L175 Difference]: Start difference. First operand has 221 places, 167 transitions, 1504 flow. Second operand 10 states and 111 transitions. [2024-06-14 12:46:00,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 185 transitions, 1954 flow [2024-06-14 12:46:00,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 185 transitions, 1875 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 12:46:00,474 INFO L231 Difference]: Finished difference. Result has 217 places, 168 transitions, 1561 flow [2024-06-14 12:46:00,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1425, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1561, PETRI_PLACES=217, PETRI_TRANSITIONS=168} [2024-06-14 12:46:00,475 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 187 predicate places. [2024-06-14 12:46:00,475 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 168 transitions, 1561 flow [2024-06-14 12:46:00,475 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 12:46:00,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:00,476 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 12:46:00,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-14 12:46:00,476 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 12:46:00,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:00,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1000339388, now seen corresponding path program 6 times [2024-06-14 12:46:00,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:00,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710789505] [2024-06-14 12:46:00,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:00,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:00,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:01,488 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 12:46:01,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:01,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710789505] [2024-06-14 12:46:01,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710789505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:01,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:01,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:46:01,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959660201] [2024-06-14 12:46:01,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:01,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:46:01,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:01,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:46:01,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:46:01,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:46:01,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 168 transitions, 1561 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 12:46:01,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:01,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:46:01,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:01,867 INFO L124 PetriNetUnfolderBase]: 464/850 cut-off events. [2024-06-14 12:46:01,867 INFO L125 PetriNetUnfolderBase]: For 71734/71734 co-relation queries the response was YES. [2024-06-14 12:46:01,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4726 conditions, 850 events. 464/850 cut-off events. For 71734/71734 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4158 event pairs, 73 based on Foata normal form. 12/861 useless extension candidates. Maximal degree in co-relation 4617. Up to 723 conditions per place. [2024-06-14 12:46:01,874 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 158 selfloop transitions, 23 changer transitions 7/190 dead transitions. [2024-06-14 12:46:01,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 190 transitions, 2061 flow [2024-06-14 12:46:01,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:46:01,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:46:01,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-14 12:46:01,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-14 12:46:01,876 INFO L175 Difference]: Start difference. First operand has 217 places, 168 transitions, 1561 flow. Second operand 10 states and 109 transitions. [2024-06-14 12:46:01,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 190 transitions, 2061 flow [2024-06-14 12:46:02,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 190 transitions, 1935 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-14 12:46:02,029 INFO L231 Difference]: Finished difference. Result has 219 places, 166 transitions, 1501 flow [2024-06-14 12:46:02,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1435, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1501, PETRI_PLACES=219, PETRI_TRANSITIONS=166} [2024-06-14 12:46:02,030 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 189 predicate places. [2024-06-14 12:46:02,030 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 166 transitions, 1501 flow [2024-06-14 12:46:02,030 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 12:46:02,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:02,030 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 12:46:02,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-14 12:46:02,031 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 12:46:02,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:02,031 INFO L85 PathProgramCache]: Analyzing trace with hash 823203218, now seen corresponding path program 7 times [2024-06-14 12:46:02,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:02,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399070525] [2024-06-14 12:46:02,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:02,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:02,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:03,098 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 12:46:03,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:03,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399070525] [2024-06-14 12:46:03,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399070525] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:03,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:03,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:46:03,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993016381] [2024-06-14 12:46:03,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:03,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:46:03,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:03,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:46:03,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:46:03,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:46:03,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 166 transitions, 1501 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 12:46:03,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:03,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:46:03,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:03,490 INFO L124 PetriNetUnfolderBase]: 444/810 cut-off events. [2024-06-14 12:46:03,490 INFO L125 PetriNetUnfolderBase]: For 44508/44508 co-relation queries the response was YES. [2024-06-14 12:46:03,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4527 conditions, 810 events. 444/810 cut-off events. For 44508/44508 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 3942 event pairs, 67 based on Foata normal form. 2/811 useless extension candidates. Maximal degree in co-relation 4417. Up to 688 conditions per place. [2024-06-14 12:46:03,497 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 153 selfloop transitions, 29 changer transitions 0/184 dead transitions. [2024-06-14 12:46:03,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 184 transitions, 1951 flow [2024-06-14 12:46:03,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:46:03,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:46:03,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-14 12:46:03,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-14 12:46:03,498 INFO L175 Difference]: Start difference. First operand has 219 places, 166 transitions, 1501 flow. Second operand 10 states and 106 transitions. [2024-06-14 12:46:03,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 184 transitions, 1951 flow [2024-06-14 12:46:03,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 184 transitions, 1865 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-06-14 12:46:03,638 INFO L231 Difference]: Finished difference. Result has 219 places, 167 transitions, 1519 flow [2024-06-14 12:46:03,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1415, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1519, PETRI_PLACES=219, PETRI_TRANSITIONS=167} [2024-06-14 12:46:03,639 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 189 predicate places. [2024-06-14 12:46:03,639 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 167 transitions, 1519 flow [2024-06-14 12:46:03,639 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 12:46:03,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:03,639 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 12:46:03,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-14 12:46:03,640 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 12:46:03,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:03,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1000585342, now seen corresponding path program 2 times [2024-06-14 12:46:03,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:03,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101367694] [2024-06-14 12:46:03,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:03,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:03,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:04,417 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 12:46:04,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:04,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101367694] [2024-06-14 12:46:04,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101367694] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:04,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:04,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:46:04,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047069426] [2024-06-14 12:46:04,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:04,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:46:04,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:04,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:46:04,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:46:04,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:46:04,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 167 transitions, 1519 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 12:46:04,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:04,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:46:04,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:04,811 INFO L124 PetriNetUnfolderBase]: 492/910 cut-off events. [2024-06-14 12:46:04,812 INFO L125 PetriNetUnfolderBase]: For 99490/99490 co-relation queries the response was YES. [2024-06-14 12:46:04,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5867 conditions, 910 events. 492/910 cut-off events. For 99490/99490 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4535 event pairs, 87 based on Foata normal form. 8/917 useless extension candidates. Maximal degree in co-relation 5757. Up to 703 conditions per place. [2024-06-14 12:46:04,819 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 164 selfloop transitions, 19 changer transitions 8/193 dead transitions. [2024-06-14 12:46:04,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 193 transitions, 2211 flow [2024-06-14 12:46:04,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:46:04,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:46:04,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-14 12:46:04,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-14 12:46:04,820 INFO L175 Difference]: Start difference. First operand has 219 places, 167 transitions, 1519 flow. Second operand 10 states and 111 transitions. [2024-06-14 12:46:04,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 193 transitions, 2211 flow [2024-06-14 12:46:05,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 193 transitions, 2117 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-14 12:46:05,028 INFO L231 Difference]: Finished difference. Result has 221 places, 164 transitions, 1446 flow [2024-06-14 12:46:05,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1425, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1446, PETRI_PLACES=221, PETRI_TRANSITIONS=164} [2024-06-14 12:46:05,028 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 191 predicate places. [2024-06-14 12:46:05,028 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 164 transitions, 1446 flow [2024-06-14 12:46:05,028 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 12:46:05,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:05,029 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 12:46:05,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-14 12:46:05,029 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 12:46:05,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:05,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1000346332, now seen corresponding path program 3 times [2024-06-14 12:46:05,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:05,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130487670] [2024-06-14 12:46:05,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:05,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:05,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:06,098 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 12:46:06,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:06,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130487670] [2024-06-14 12:46:06,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130487670] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:06,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:06,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:46:06,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736955324] [2024-06-14 12:46:06,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:06,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:46:06,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:06,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:46:06,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:46:06,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:46:06,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 164 transitions, 1446 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 12:46:06,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:06,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:46:06,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:06,564 INFO L124 PetriNetUnfolderBase]: 489/905 cut-off events. [2024-06-14 12:46:06,564 INFO L125 PetriNetUnfolderBase]: For 107479/107479 co-relation queries the response was YES. [2024-06-14 12:46:06,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5778 conditions, 905 events. 489/905 cut-off events. For 107479/107479 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4502 event pairs, 95 based on Foata normal form. 10/914 useless extension candidates. Maximal degree in co-relation 5667. Up to 795 conditions per place. [2024-06-14 12:46:06,572 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 158 selfloop transitions, 18 changer transitions 9/187 dead transitions. [2024-06-14 12:46:06,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 187 transitions, 1908 flow [2024-06-14 12:46:06,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:46:06,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:46:06,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-14 12:46:06,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-14 12:46:06,573 INFO L175 Difference]: Start difference. First operand has 221 places, 164 transitions, 1446 flow. Second operand 11 states and 116 transitions. [2024-06-14 12:46:06,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 187 transitions, 1908 flow [2024-06-14 12:46:06,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 187 transitions, 1868 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 12:46:06,805 INFO L231 Difference]: Finished difference. Result has 219 places, 161 transitions, 1421 flow [2024-06-14 12:46:06,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1406, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1421, PETRI_PLACES=219, PETRI_TRANSITIONS=161} [2024-06-14 12:46:06,806 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 189 predicate places. [2024-06-14 12:46:06,806 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 161 transitions, 1421 flow [2024-06-14 12:46:06,806 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 12:46:06,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:06,806 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 12:46:06,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-14 12:46:06,807 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 12:46:06,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:06,807 INFO L85 PathProgramCache]: Analyzing trace with hash 823087898, now seen corresponding path program 8 times [2024-06-14 12:46:06,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:06,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127870804] [2024-06-14 12:46:06,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:06,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:06,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:07,763 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 12:46:07,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:07,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127870804] [2024-06-14 12:46:07,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127870804] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:07,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:07,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:46:07,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116688905] [2024-06-14 12:46:07,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:07,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:46:07,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:07,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:46:07,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:46:07,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:46:07,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 161 transitions, 1421 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 12:46:07,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:07,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:46:07,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:08,214 INFO L124 PetriNetUnfolderBase]: 467/863 cut-off events. [2024-06-14 12:46:08,214 INFO L125 PetriNetUnfolderBase]: For 80261/80261 co-relation queries the response was YES. [2024-06-14 12:46:08,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5636 conditions, 863 events. 467/863 cut-off events. For 80261/80261 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4243 event pairs, 87 based on Foata normal form. 2/864 useless extension candidates. Maximal degree in co-relation 5527. Up to 755 conditions per place. [2024-06-14 12:46:08,220 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 151 selfloop transitions, 26 changer transitions 0/179 dead transitions. [2024-06-14 12:46:08,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 179 transitions, 1861 flow [2024-06-14 12:46:08,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:46:08,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:46:08,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-14 12:46:08,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33225806451612905 [2024-06-14 12:46:08,221 INFO L175 Difference]: Start difference. First operand has 219 places, 161 transitions, 1421 flow. Second operand 10 states and 103 transitions. [2024-06-14 12:46:08,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 179 transitions, 1861 flow [2024-06-14 12:46:08,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 179 transitions, 1819 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 12:46:08,446 INFO L231 Difference]: Finished difference. Result has 216 places, 162 transitions, 1479 flow [2024-06-14 12:46:08,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1379, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1479, PETRI_PLACES=216, PETRI_TRANSITIONS=162} [2024-06-14 12:46:08,446 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 186 predicate places. [2024-06-14 12:46:08,446 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 162 transitions, 1479 flow [2024-06-14 12:46:08,447 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 12:46:08,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:08,447 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 12:46:08,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-14 12:46:08,447 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 12:46:08,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:08,447 INFO L85 PathProgramCache]: Analyzing trace with hash 993910298, now seen corresponding path program 9 times [2024-06-14 12:46:08,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:08,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442144518] [2024-06-14 12:46:08,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:08,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:08,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:09,221 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 12:46:09,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:09,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442144518] [2024-06-14 12:46:09,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442144518] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:09,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:09,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:46:09,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685213975] [2024-06-14 12:46:09,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:09,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:46:09,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:09,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:46:09,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:46:09,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:46:09,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 162 transitions, 1479 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 12:46:09,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:09,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:46:09,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:09,578 INFO L124 PetriNetUnfolderBase]: 464/858 cut-off events. [2024-06-14 12:46:09,578 INFO L125 PetriNetUnfolderBase]: For 72382/72382 co-relation queries the response was YES. [2024-06-14 12:46:09,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5441 conditions, 858 events. 464/858 cut-off events. For 72382/72382 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4229 event pairs, 90 based on Foata normal form. 2/859 useless extension candidates. Maximal degree in co-relation 5333. Up to 790 conditions per place. [2024-06-14 12:46:09,585 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 158 selfloop transitions, 20 changer transitions 0/180 dead transitions. [2024-06-14 12:46:09,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 180 transitions, 1929 flow [2024-06-14 12:46:09,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:46:09,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:46:09,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-14 12:46:09,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33225806451612905 [2024-06-14 12:46:09,586 INFO L175 Difference]: Start difference. First operand has 216 places, 162 transitions, 1479 flow. Second operand 10 states and 103 transitions. [2024-06-14 12:46:09,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 180 transitions, 1929 flow [2024-06-14 12:46:09,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 180 transitions, 1839 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-14 12:46:09,806 INFO L231 Difference]: Finished difference. Result has 218 places, 163 transitions, 1479 flow [2024-06-14 12:46:09,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1389, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1479, PETRI_PLACES=218, PETRI_TRANSITIONS=163} [2024-06-14 12:46:09,806 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 188 predicate places. [2024-06-14 12:46:09,806 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 163 transitions, 1479 flow [2024-06-14 12:46:09,807 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 12:46:09,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:09,807 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 12:46:09,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-14 12:46:09,807 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 12:46:09,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:09,807 INFO L85 PathProgramCache]: Analyzing trace with hash 993905648, now seen corresponding path program 10 times [2024-06-14 12:46:09,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:09,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444801562] [2024-06-14 12:46:09,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:09,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:09,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:10,669 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 12:46:10,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:10,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444801562] [2024-06-14 12:46:10,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444801562] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:10,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:10,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:46:10,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059894771] [2024-06-14 12:46:10,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:10,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:46:10,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:10,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:46:10,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:46:10,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:46:10,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 163 transitions, 1479 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 12:46:10,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:10,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:46:10,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:10,978 INFO L124 PetriNetUnfolderBase]: 468/866 cut-off events. [2024-06-14 12:46:10,979 INFO L125 PetriNetUnfolderBase]: For 74409/74409 co-relation queries the response was YES. [2024-06-14 12:46:10,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5486 conditions, 866 events. 468/866 cut-off events. For 74409/74409 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4274 event pairs, 90 based on Foata normal form. 2/867 useless extension candidates. Maximal degree in co-relation 5377. Up to 778 conditions per place. [2024-06-14 12:46:10,986 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 157 selfloop transitions, 22 changer transitions 0/181 dead transitions. [2024-06-14 12:46:10,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 181 transitions, 1931 flow [2024-06-14 12:46:10,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:46:10,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:46:10,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-14 12:46:10,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33548387096774196 [2024-06-14 12:46:10,993 INFO L175 Difference]: Start difference. First operand has 218 places, 163 transitions, 1479 flow. Second operand 10 states and 104 transitions. [2024-06-14 12:46:10,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 181 transitions, 1931 flow [2024-06-14 12:46:11,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 181 transitions, 1851 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-14 12:46:11,211 INFO L231 Difference]: Finished difference. Result has 220 places, 164 transitions, 1495 flow [2024-06-14 12:46:11,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1399, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1495, PETRI_PLACES=220, PETRI_TRANSITIONS=164} [2024-06-14 12:46:11,211 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 190 predicate places. [2024-06-14 12:46:11,211 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 164 transitions, 1495 flow [2024-06-14 12:46:11,212 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 12:46:11,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:11,212 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 12:46:11,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-14 12:46:11,212 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 12:46:11,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:11,212 INFO L85 PathProgramCache]: Analyzing trace with hash 907165582, now seen corresponding path program 4 times [2024-06-14 12:46:11,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:11,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351756558] [2024-06-14 12:46:11,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:11,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:11,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:12,112 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 12:46:12,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:12,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351756558] [2024-06-14 12:46:12,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351756558] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:12,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:12,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:46:12,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798606239] [2024-06-14 12:46:12,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:12,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:46:12,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:12,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:46:12,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:46:12,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:46:12,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 164 transitions, 1495 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 12:46:12,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:12,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:46:12,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:12,603 INFO L124 PetriNetUnfolderBase]: 484/902 cut-off events. [2024-06-14 12:46:12,603 INFO L125 PetriNetUnfolderBase]: For 99191/99191 co-relation queries the response was YES. [2024-06-14 12:46:12,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5573 conditions, 902 events. 484/902 cut-off events. For 99191/99191 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4530 event pairs, 88 based on Foata normal form. 10/911 useless extension candidates. Maximal degree in co-relation 5463. Up to 677 conditions per place. [2024-06-14 12:46:12,610 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 135 selfloop transitions, 34 changer transitions 16/187 dead transitions. [2024-06-14 12:46:12,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 187 transitions, 1955 flow [2024-06-14 12:46:12,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:46:12,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:46:12,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-14 12:46:12,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-14 12:46:12,611 INFO L175 Difference]: Start difference. First operand has 220 places, 164 transitions, 1495 flow. Second operand 11 states and 123 transitions. [2024-06-14 12:46:12,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 187 transitions, 1955 flow [2024-06-14 12:46:12,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 187 transitions, 1869 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-14 12:46:12,822 INFO L231 Difference]: Finished difference. Result has 223 places, 158 transitions, 1444 flow [2024-06-14 12:46:12,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1409, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1444, PETRI_PLACES=223, PETRI_TRANSITIONS=158} [2024-06-14 12:46:12,822 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 193 predicate places. [2024-06-14 12:46:12,823 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 158 transitions, 1444 flow [2024-06-14 12:46:12,823 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 12:46:12,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:12,823 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 12:46:12,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-14 12:46:12,823 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 12:46:12,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:12,824 INFO L85 PathProgramCache]: Analyzing trace with hash 994090222, now seen corresponding path program 5 times [2024-06-14 12:46:12,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:12,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203218352] [2024-06-14 12:46:12,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:12,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:12,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:13,688 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 12:46:13,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:13,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203218352] [2024-06-14 12:46:13,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203218352] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:13,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:13,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:46:13,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973691490] [2024-06-14 12:46:13,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:13,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:46:13,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:13,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:46:13,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:46:13,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:46:13,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 158 transitions, 1444 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 12:46:13,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:13,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:46:13,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:14,035 INFO L124 PetriNetUnfolderBase]: 450/844 cut-off events. [2024-06-14 12:46:14,035 INFO L125 PetriNetUnfolderBase]: For 88844/88844 co-relation queries the response was YES. [2024-06-14 12:46:14,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4988 conditions, 844 events. 450/844 cut-off events. For 88844/88844 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4156 event pairs, 86 based on Foata normal form. 10/853 useless extension candidates. Maximal degree in co-relation 4877. Up to 730 conditions per place. [2024-06-14 12:46:14,042 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 148 selfloop transitions, 14 changer transitions 16/180 dead transitions. [2024-06-14 12:46:14,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 180 transitions, 1888 flow [2024-06-14 12:46:14,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:46:14,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:46:14,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-14 12:46:14,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3313782991202346 [2024-06-14 12:46:14,043 INFO L175 Difference]: Start difference. First operand has 223 places, 158 transitions, 1444 flow. Second operand 11 states and 113 transitions. [2024-06-14 12:46:14,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 180 transitions, 1888 flow [2024-06-14 12:46:14,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 180 transitions, 1808 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-14 12:46:14,212 INFO L231 Difference]: Finished difference. Result has 217 places, 152 transitions, 1347 flow [2024-06-14 12:46:14,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1364, PETRI_DIFFERENCE_MINUEND_PLACES=206, 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=11, PETRI_FLOW=1347, PETRI_PLACES=217, PETRI_TRANSITIONS=152} [2024-06-14 12:46:14,213 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 187 predicate places. [2024-06-14 12:46:14,213 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 152 transitions, 1347 flow [2024-06-14 12:46:14,213 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 12:46:14,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:14,213 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 12:46:14,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-14 12:46:14,213 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 12:46:14,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:14,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1212680260, now seen corresponding path program 11 times [2024-06-14 12:46:14,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:14,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504981261] [2024-06-14 12:46:14,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:14,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:14,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:15,098 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 12:46:15,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:15,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504981261] [2024-06-14 12:46:15,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504981261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:15,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:15,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:46:15,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478139623] [2024-06-14 12:46:15,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:15,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:46:15,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:15,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:46:15,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:46:15,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:46:15,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 152 transitions, 1347 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 12:46:15,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:15,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:46:15,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:15,519 INFO L124 PetriNetUnfolderBase]: 418/785 cut-off events. [2024-06-14 12:46:15,519 INFO L125 PetriNetUnfolderBase]: For 60378/60384 co-relation queries the response was YES. [2024-06-14 12:46:15,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4704 conditions, 785 events. 418/785 cut-off events. For 60378/60384 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3784 event pairs, 79 based on Foata normal form. 2/782 useless extension candidates. Maximal degree in co-relation 4596. Up to 459 conditions per place. [2024-06-14 12:46:15,525 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 86 selfloop transitions, 81 changer transitions 0/169 dead transitions. [2024-06-14 12:46:15,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 169 transitions, 1771 flow [2024-06-14 12:46:15,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:46:15,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:46:15,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-14 12:46:15,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-14 12:46:15,526 INFO L175 Difference]: Start difference. First operand has 217 places, 152 transitions, 1347 flow. Second operand 10 states and 115 transitions. [2024-06-14 12:46:15,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 169 transitions, 1771 flow [2024-06-14 12:46:15,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 169 transitions, 1731 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-14 12:46:15,680 INFO L231 Difference]: Finished difference. Result has 210 places, 153 transitions, 1519 flow [2024-06-14 12:46:15,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1309, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1519, PETRI_PLACES=210, PETRI_TRANSITIONS=153} [2024-06-14 12:46:15,680 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 180 predicate places. [2024-06-14 12:46:15,680 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 153 transitions, 1519 flow [2024-06-14 12:46:15,680 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 12:46:15,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:15,681 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 12:46:15,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-14 12:46:15,681 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 12:46:15,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:15,681 INFO L85 PathProgramCache]: Analyzing trace with hash -859525188, now seen corresponding path program 12 times [2024-06-14 12:46:15,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:15,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930521307] [2024-06-14 12:46:15,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:15,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:15,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:16,705 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 12:46:16,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:16,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930521307] [2024-06-14 12:46:16,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930521307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:16,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:16,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:46:16,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76143837] [2024-06-14 12:46:16,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:16,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:46:16,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:16,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:46:16,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:46:16,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:46:16,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 153 transitions, 1519 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 12:46:16,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:16,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:46:16,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:17,240 INFO L124 PetriNetUnfolderBase]: 422/793 cut-off events. [2024-06-14 12:46:17,240 INFO L125 PetriNetUnfolderBase]: For 56996/57002 co-relation queries the response was YES. [2024-06-14 12:46:17,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4914 conditions, 793 events. 422/793 cut-off events. For 56996/57002 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3842 event pairs, 79 based on Foata normal form. 2/790 useless extension candidates. Maximal degree in co-relation 4809. Up to 453 conditions per place. [2024-06-14 12:46:17,246 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 86 selfloop transitions, 82 changer transitions 0/170 dead transitions. [2024-06-14 12:46:17,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 170 transitions, 1943 flow [2024-06-14 12:46:17,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:46:17,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:46:17,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-14 12:46:17,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-14 12:46:17,247 INFO L175 Difference]: Start difference. First operand has 210 places, 153 transitions, 1519 flow. Second operand 10 states and 116 transitions. [2024-06-14 12:46:17,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 170 transitions, 1943 flow [2024-06-14 12:46:17,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 170 transitions, 1743 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-14 12:46:17,436 INFO L231 Difference]: Finished difference. Result has 212 places, 154 transitions, 1533 flow [2024-06-14 12:46:17,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1319, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1533, PETRI_PLACES=212, PETRI_TRANSITIONS=154} [2024-06-14 12:46:17,436 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 182 predicate places. [2024-06-14 12:46:17,436 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 154 transitions, 1533 flow [2024-06-14 12:46:17,436 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 12:46:17,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:17,437 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 12:46:17,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-14 12:46:17,437 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 12:46:17,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:17,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1093274264, now seen corresponding path program 6 times [2024-06-14 12:46:17,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:17,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892179475] [2024-06-14 12:46:17,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:17,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:17,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:18,395 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 12:46:18,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:18,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892179475] [2024-06-14 12:46:18,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892179475] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:18,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:18,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:46:18,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023623506] [2024-06-14 12:46:18,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:18,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:46:18,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:18,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:46:18,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:46:18,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:46:18,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 154 transitions, 1533 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 12:46:18,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:18,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:46:18,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:18,813 INFO L124 PetriNetUnfolderBase]: 438/829 cut-off events. [2024-06-14 12:46:18,813 INFO L125 PetriNetUnfolderBase]: For 79292/79298 co-relation queries the response was YES. [2024-06-14 12:46:18,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4997 conditions, 829 events. 438/829 cut-off events. For 79292/79298 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4089 event pairs, 87 based on Foata normal form. 10/834 useless extension candidates. Maximal degree in co-relation 4891. Up to 658 conditions per place. [2024-06-14 12:46:18,821 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 133 selfloop transitions, 31 changer transitions 7/173 dead transitions. [2024-06-14 12:46:18,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 173 transitions, 1953 flow [2024-06-14 12:46:18,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:46:18,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:46:18,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-14 12:46:18,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-14 12:46:18,833 INFO L175 Difference]: Start difference. First operand has 212 places, 154 transitions, 1533 flow. Second operand 10 states and 109 transitions. [2024-06-14 12:46:18,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 173 transitions, 1953 flow [2024-06-14 12:46:18,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 173 transitions, 1749 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-14 12:46:18,999 INFO L231 Difference]: Finished difference. Result has 214 places, 151 transitions, 1375 flow [2024-06-14 12:46:18,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1329, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1375, PETRI_PLACES=214, PETRI_TRANSITIONS=151} [2024-06-14 12:46:18,999 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 184 predicate places. [2024-06-14 12:46:18,999 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 151 transitions, 1375 flow [2024-06-14 12:46:18,999 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 12:46:18,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:19,000 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 12:46:19,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-14 12:46:19,000 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 12:46:19,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:19,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1265757210, now seen corresponding path program 13 times [2024-06-14 12:46:19,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:19,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710859119] [2024-06-14 12:46:19,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:19,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:19,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:19,887 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 12:46:19,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:19,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710859119] [2024-06-14 12:46:19,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710859119] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:19,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:19,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:46:19,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274522100] [2024-06-14 12:46:19,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:19,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:46:19,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:19,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:46:19,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:46:19,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:46:19,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 151 transitions, 1375 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 12:46:19,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:19,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:46:19,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:20,198 INFO L124 PetriNetUnfolderBase]: 432/823 cut-off events. [2024-06-14 12:46:20,198 INFO L125 PetriNetUnfolderBase]: For 86876/86882 co-relation queries the response was YES. [2024-06-14 12:46:20,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4860 conditions, 823 events. 432/823 cut-off events. For 86876/86882 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4088 event pairs, 83 based on Foata normal form. 16/836 useless extension candidates. Maximal degree in co-relation 4753. Up to 689 conditions per place. [2024-06-14 12:46:20,204 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 136 selfloop transitions, 26 changer transitions 7/171 dead transitions. [2024-06-14 12:46:20,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 171 transitions, 1839 flow [2024-06-14 12:46:20,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:46:20,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:46:20,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-14 12:46:20,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-14 12:46:20,205 INFO L175 Difference]: Start difference. First operand has 214 places, 151 transitions, 1375 flow. Second operand 10 states and 108 transitions. [2024-06-14 12:46:20,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 171 transitions, 1839 flow [2024-06-14 12:46:20,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 171 transitions, 1697 flow, removed 4 selfloop flow, removed 14 redundant places. [2024-06-14 12:46:20,361 INFO L231 Difference]: Finished difference. Result has 210 places, 149 transitions, 1316 flow [2024-06-14 12:46:20,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1235, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1316, PETRI_PLACES=210, PETRI_TRANSITIONS=149} [2024-06-14 12:46:20,361 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 180 predicate places. [2024-06-14 12:46:20,361 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 149 transitions, 1316 flow [2024-06-14 12:46:20,362 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 12:46:20,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:20,362 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 12:46:20,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-14 12:46:20,362 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 12:46:20,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:20,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1035541796, now seen corresponding path program 7 times [2024-06-14 12:46:20,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:20,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134598904] [2024-06-14 12:46:20,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:20,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:20,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:21,318 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 12:46:21,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:21,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134598904] [2024-06-14 12:46:21,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134598904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:21,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:21,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:46:21,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133823493] [2024-06-14 12:46:21,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:21,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:46:21,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:21,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:46:21,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:46:21,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:46:21,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 149 transitions, 1316 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 12:46:21,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:21,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:46:21,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:21,713 INFO L124 PetriNetUnfolderBase]: 424/811 cut-off events. [2024-06-14 12:46:21,714 INFO L125 PetriNetUnfolderBase]: For 79012/79018 co-relation queries the response was YES. [2024-06-14 12:46:21,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4668 conditions, 811 events. 424/811 cut-off events. For 79012/79018 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4029 event pairs, 85 based on Foata normal form. 14/822 useless extension candidates. Maximal degree in co-relation 4563. Up to 679 conditions per place. [2024-06-14 12:46:21,720 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 132 selfloop transitions, 20 changer transitions 16/170 dead transitions. [2024-06-14 12:46:21,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 170 transitions, 1736 flow [2024-06-14 12:46:21,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:46:21,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:46:21,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-14 12:46:21,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-14 12:46:21,721 INFO L175 Difference]: Start difference. First operand has 210 places, 149 transitions, 1316 flow. Second operand 11 states and 116 transitions. [2024-06-14 12:46:21,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 170 transitions, 1736 flow [2024-06-14 12:46:21,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 170 transitions, 1614 flow, removed 22 selfloop flow, removed 10 redundant places. [2024-06-14 12:46:21,879 INFO L231 Difference]: Finished difference. Result has 211 places, 143 transitions, 1196 flow [2024-06-14 12:46:21,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1194, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1196, PETRI_PLACES=211, PETRI_TRANSITIONS=143} [2024-06-14 12:46:21,880 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 181 predicate places. [2024-06-14 12:46:21,880 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 143 transitions, 1196 flow [2024-06-14 12:46:21,880 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 12:46:21,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:21,880 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 12:46:21,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-14 12:46:21,881 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 12:46:21,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:21,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1035302786, now seen corresponding path program 8 times [2024-06-14 12:46:21,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:21,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193586261] [2024-06-14 12:46:21,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:21,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:21,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:22,677 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 12:46:22,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:22,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193586261] [2024-06-14 12:46:22,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193586261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:22,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:22,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:46:22,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184803375] [2024-06-14 12:46:22,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:22,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:46:22,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:22,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:46:22,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:46:22,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:46:22,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 143 transitions, 1196 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 12:46:22,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:22,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:46:22,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:23,037 INFO L124 PetriNetUnfolderBase]: 438/845 cut-off events. [2024-06-14 12:46:23,037 INFO L125 PetriNetUnfolderBase]: For 108610/108616 co-relation queries the response was YES. [2024-06-14 12:46:23,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5666 conditions, 845 events. 438/845 cut-off events. For 108610/108616 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4216 event pairs, 95 based on Foata normal form. 12/854 useless extension candidates. Maximal degree in co-relation 5561. Up to 661 conditions per place. [2024-06-14 12:46:23,044 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 138 selfloop transitions, 18 changer transitions 9/167 dead transitions. [2024-06-14 12:46:23,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 167 transitions, 1828 flow [2024-06-14 12:46:23,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:46:23,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:46:23,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-14 12:46:23,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-14 12:46:23,045 INFO L175 Difference]: Start difference. First operand has 211 places, 143 transitions, 1196 flow. Second operand 10 states and 109 transitions. [2024-06-14 12:46:23,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 167 transitions, 1828 flow [2024-06-14 12:46:23,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 167 transitions, 1768 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-14 12:46:23,241 INFO L231 Difference]: Finished difference. Result has 204 places, 139 transitions, 1161 flow [2024-06-14 12:46:23,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1146, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1161, PETRI_PLACES=204, PETRI_TRANSITIONS=139} [2024-06-14 12:46:23,241 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 174 predicate places. [2024-06-14 12:46:23,242 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 139 transitions, 1161 flow [2024-06-14 12:46:23,242 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 12:46:23,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:23,242 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 12:46:23,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-14 12:46:23,242 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 12:46:23,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:23,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1212800230, now seen corresponding path program 14 times [2024-06-14 12:46:23,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:23,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812263451] [2024-06-14 12:46:23,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:23,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:23,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:24,215 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 12:46:24,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:24,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812263451] [2024-06-14 12:46:24,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812263451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:24,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:24,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:46:24,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097822426] [2024-06-14 12:46:24,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:24,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:46:24,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:24,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:46:24,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:46:24,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:46:24,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 139 transitions, 1161 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 12:46:24,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:24,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:46:24,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:24,568 INFO L124 PetriNetUnfolderBase]: 422/809 cut-off events. [2024-06-14 12:46:24,569 INFO L125 PetriNetUnfolderBase]: For 85966/85972 co-relation queries the response was YES. [2024-06-14 12:46:24,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5511 conditions, 809 events. 422/809 cut-off events. For 85966/85972 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3963 event pairs, 101 based on Foata normal form. 2/806 useless extension candidates. Maximal degree in co-relation 5409. Up to 688 conditions per place. [2024-06-14 12:46:24,575 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 123 selfloop transitions, 30 changer transitions 0/155 dead transitions. [2024-06-14 12:46:24,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 155 transitions, 1551 flow [2024-06-14 12:46:24,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:46:24,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:46:24,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-14 12:46:24,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32903225806451614 [2024-06-14 12:46:24,576 INFO L175 Difference]: Start difference. First operand has 204 places, 139 transitions, 1161 flow. Second operand 10 states and 102 transitions. [2024-06-14 12:46:24,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 155 transitions, 1551 flow [2024-06-14 12:46:24,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 155 transitions, 1506 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-14 12:46:24,755 INFO L231 Difference]: Finished difference. Result has 199 places, 140 transitions, 1228 flow [2024-06-14 12:46:24,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1118, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1228, PETRI_PLACES=199, PETRI_TRANSITIONS=140} [2024-06-14 12:46:24,756 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 169 predicate places. [2024-06-14 12:46:24,756 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 140 transitions, 1228 flow [2024-06-14 12:46:24,756 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 12:46:24,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:24,756 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 12:46:24,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-14 12:46:24,756 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 12:46:24,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:24,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1466925040, now seen corresponding path program 15 times [2024-06-14 12:46:24,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:24,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505800290] [2024-06-14 12:46:24,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:24,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:24,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:25,872 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 12:46:25,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:25,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505800290] [2024-06-14 12:46:25,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505800290] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:25,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:25,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:46:25,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568738135] [2024-06-14 12:46:25,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:25,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:46:25,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:25,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:46:25,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:46:25,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:46:25,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 140 transitions, 1228 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 12:46:25,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:25,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:46:25,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:26,292 INFO L124 PetriNetUnfolderBase]: 419/804 cut-off events. [2024-06-14 12:46:26,292 INFO L125 PetriNetUnfolderBase]: For 74669/74675 co-relation queries the response was YES. [2024-06-14 12:46:26,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5268 conditions, 804 events. 419/804 cut-off events. For 74669/74675 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3937 event pairs, 98 based on Foata normal form. 6/807 useless extension candidates. Maximal degree in co-relation 5169. Up to 738 conditions per place. [2024-06-14 12:46:26,299 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 133 selfloop transitions, 21 changer transitions 0/156 dead transitions. [2024-06-14 12:46:26,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 156 transitions, 1626 flow [2024-06-14 12:46:26,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:46:26,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:46:26,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-14 12:46:26,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3258064516129032 [2024-06-14 12:46:26,300 INFO L175 Difference]: Start difference. First operand has 199 places, 140 transitions, 1228 flow. Second operand 10 states and 101 transitions. [2024-06-14 12:46:26,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 156 transitions, 1626 flow [2024-06-14 12:46:26,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 156 transitions, 1526 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-14 12:46:26,481 INFO L231 Difference]: Finished difference. Result has 201 places, 141 transitions, 1222 flow [2024-06-14 12:46:26,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1128, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1222, PETRI_PLACES=201, PETRI_TRANSITIONS=141} [2024-06-14 12:46:26,481 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 171 predicate places. [2024-06-14 12:46:26,482 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 141 transitions, 1222 flow [2024-06-14 12:46:26,482 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 12:46:26,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:26,482 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 12:46:26,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-14 12:46:26,482 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 12:46:26,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:26,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1065875686, now seen corresponding path program 16 times [2024-06-14 12:46:26,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:26,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624071532] [2024-06-14 12:46:26,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:26,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:26,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:27,374 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 12:46:27,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:27,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624071532] [2024-06-14 12:46:27,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624071532] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:27,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:27,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:46:27,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870864279] [2024-06-14 12:46:27,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:27,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:46:27,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:27,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:46:27,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:46:27,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:46:27,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 141 transitions, 1222 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 12:46:27,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:27,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:46:27,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:27,713 INFO L124 PetriNetUnfolderBase]: 439/848 cut-off events. [2024-06-14 12:46:27,713 INFO L125 PetriNetUnfolderBase]: For 100816/100822 co-relation queries the response was YES. [2024-06-14 12:46:27,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5435 conditions, 848 events. 439/848 cut-off events. For 100816/100822 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4254 event pairs, 104 based on Foata normal form. 16/861 useless extension candidates. Maximal degree in co-relation 5335. Up to 631 conditions per place. [2024-06-14 12:46:27,720 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 111 selfloop transitions, 42 changer transitions 7/162 dead transitions. [2024-06-14 12:46:27,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 162 transitions, 1672 flow [2024-06-14 12:46:27,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:46:27,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:46:27,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-14 12:46:27,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-14 12:46:27,725 INFO L175 Difference]: Start difference. First operand has 201 places, 141 transitions, 1222 flow. Second operand 10 states and 115 transitions. [2024-06-14 12:46:27,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 162 transitions, 1672 flow [2024-06-14 12:46:27,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 162 transitions, 1588 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-14 12:46:27,902 INFO L231 Difference]: Finished difference. Result has 203 places, 139 transitions, 1254 flow [2024-06-14 12:46:27,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1138, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1254, PETRI_PLACES=203, PETRI_TRANSITIONS=139} [2024-06-14 12:46:27,902 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 173 predicate places. [2024-06-14 12:46:27,903 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 139 transitions, 1254 flow [2024-06-14 12:46:27,903 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 12:46:27,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:27,903 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 12:46:27,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-14 12:46:27,903 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 12:46:27,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:27,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1041982480, now seen corresponding path program 17 times [2024-06-14 12:46:27,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:27,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739802209] [2024-06-14 12:46:27,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:27,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:27,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:28,831 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 12:46:28,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:28,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739802209] [2024-06-14 12:46:28,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739802209] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:28,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:28,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:46:28,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432115610] [2024-06-14 12:46:28,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:28,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:46:28,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:28,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:46:28,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:46:28,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:46:28,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 139 transitions, 1254 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 12:46:28,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:28,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:46:28,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:29,213 INFO L124 PetriNetUnfolderBase]: 419/808 cut-off events. [2024-06-14 12:46:29,213 INFO L125 PetriNetUnfolderBase]: For 79298/79304 co-relation queries the response was YES. [2024-06-14 12:46:29,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5370 conditions, 808 events. 419/808 cut-off events. For 79298/79304 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3995 event pairs, 102 based on Foata normal form. 6/811 useless extension candidates. Maximal degree in co-relation 5269. Up to 728 conditions per place. [2024-06-14 12:46:29,220 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 131 selfloop transitions, 22 changer transitions 0/155 dead transitions. [2024-06-14 12:46:29,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 155 transitions, 1652 flow [2024-06-14 12:46:29,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:46:29,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:46:29,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-14 12:46:29,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32903225806451614 [2024-06-14 12:46:29,221 INFO L175 Difference]: Start difference. First operand has 203 places, 139 transitions, 1254 flow. Second operand 10 states and 102 transitions. [2024-06-14 12:46:29,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 155 transitions, 1652 flow [2024-06-14 12:46:29,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 155 transitions, 1521 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-14 12:46:29,403 INFO L231 Difference]: Finished difference. Result has 204 places, 140 transitions, 1223 flow [2024-06-14 12:46:29,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1123, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1223, PETRI_PLACES=204, PETRI_TRANSITIONS=140} [2024-06-14 12:46:29,404 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 174 predicate places. [2024-06-14 12:46:29,404 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 140 transitions, 1223 flow [2024-06-14 12:46:29,404 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 12:46:29,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:29,405 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 12:46:29,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-14 12:46:29,405 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 12:46:29,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:29,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1072304776, now seen corresponding path program 18 times [2024-06-14 12:46:29,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:29,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578164687] [2024-06-14 12:46:29,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:29,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:29,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:30,232 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 12:46:30,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:30,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578164687] [2024-06-14 12:46:30,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578164687] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:30,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:30,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:46:30,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680826425] [2024-06-14 12:46:30,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:30,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:46:30,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:30,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:46:30,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:46:30,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:46:30,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 140 transitions, 1223 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 12:46:30,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:30,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:46:30,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:30,549 INFO L124 PetriNetUnfolderBase]: 423/816 cut-off events. [2024-06-14 12:46:30,549 INFO L125 PetriNetUnfolderBase]: For 81570/81576 co-relation queries the response was YES. [2024-06-14 12:46:30,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5387 conditions, 816 events. 423/816 cut-off events. For 81570/81576 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4048 event pairs, 100 based on Foata normal form. 6/819 useless extension candidates. Maximal degree in co-relation 5285. Up to 647 conditions per place. [2024-06-14 12:46:30,555 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 108 selfloop transitions, 47 changer transitions 0/157 dead transitions. [2024-06-14 12:46:30,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 157 transitions, 1633 flow [2024-06-14 12:46:30,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:46:30,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:46:30,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-14 12:46:30,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-14 12:46:30,557 INFO L175 Difference]: Start difference. First operand has 204 places, 140 transitions, 1223 flow. Second operand 10 states and 110 transitions. [2024-06-14 12:46:30,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 157 transitions, 1633 flow [2024-06-14 12:46:30,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 157 transitions, 1543 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-14 12:46:30,772 INFO L231 Difference]: Finished difference. Result has 206 places, 141 transitions, 1285 flow [2024-06-14 12:46:30,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1133, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1285, PETRI_PLACES=206, PETRI_TRANSITIONS=141} [2024-06-14 12:46:30,772 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 176 predicate places. [2024-06-14 12:46:30,772 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 141 transitions, 1285 flow [2024-06-14 12:46:30,773 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 12:46:30,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:30,773 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 12:46:30,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-14 12:46:30,773 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 12:46:30,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:30,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1466745116, now seen corresponding path program 9 times [2024-06-14 12:46:30,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:30,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728454975] [2024-06-14 12:46:30,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:30,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:30,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:31,815 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 12:46:31,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:31,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728454975] [2024-06-14 12:46:31,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728454975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:31,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:31,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:46:31,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459333648] [2024-06-14 12:46:31,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:31,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:46:31,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:31,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:46:31,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:46:31,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:46:31,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 141 transitions, 1285 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 12:46:31,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:31,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:46:31,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:32,252 INFO L124 PetriNetUnfolderBase]: 425/826 cut-off events. [2024-06-14 12:46:32,253 INFO L125 PetriNetUnfolderBase]: For 93443/93449 co-relation queries the response was YES. [2024-06-14 12:46:32,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5114 conditions, 826 events. 425/826 cut-off events. For 93443/93449 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4133 event pairs, 102 based on Foata normal form. 14/837 useless extension candidates. Maximal degree in co-relation 5011. Up to 718 conditions per place. [2024-06-14 12:46:32,258 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 132 selfloop transitions, 18 changer transitions 9/161 dead transitions. [2024-06-14 12:46:32,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 161 transitions, 1683 flow [2024-06-14 12:46:32,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:46:32,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:46:32,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-14 12:46:32,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255131964809384 [2024-06-14 12:46:32,259 INFO L175 Difference]: Start difference. First operand has 206 places, 141 transitions, 1285 flow. Second operand 11 states and 111 transitions. [2024-06-14 12:46:32,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 161 transitions, 1683 flow [2024-06-14 12:46:32,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 161 transitions, 1541 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-14 12:46:32,445 INFO L231 Difference]: Finished difference. Result has 209 places, 138 transitions, 1161 flow [2024-06-14 12:46:32,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1143, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1161, PETRI_PLACES=209, PETRI_TRANSITIONS=138} [2024-06-14 12:46:32,445 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 179 predicate places. [2024-06-14 12:46:32,446 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 138 transitions, 1161 flow [2024-06-14 12:46:32,446 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 12:46:32,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:32,446 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 12:46:32,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-14 12:46:32,446 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 12:46:32,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:32,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1072309426, now seen corresponding path program 19 times [2024-06-14 12:46:32,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:32,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155827489] [2024-06-14 12:46:32,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:32,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:32,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:33,252 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 12:46:33,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:33,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155827489] [2024-06-14 12:46:33,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155827489] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:33,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:33,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:46:33,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655436936] [2024-06-14 12:46:33,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:33,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:46:33,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:33,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:46:33,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:46:33,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:46:33,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 138 transitions, 1161 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 12:46:33,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:33,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:46:33,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:33,585 INFO L124 PetriNetUnfolderBase]: 432/843 cut-off events. [2024-06-14 12:46:33,585 INFO L125 PetriNetUnfolderBase]: For 101156/101162 co-relation queries the response was YES. [2024-06-14 12:46:33,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5835 conditions, 843 events. 432/843 cut-off events. For 101156/101162 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4234 event pairs, 107 based on Foata normal form. 6/846 useless extension candidates. Maximal degree in co-relation 5731. Up to 588 conditions per place. [2024-06-14 12:46:33,592 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 110 selfloop transitions, 48 changer transitions 0/160 dead transitions. [2024-06-14 12:46:33,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 160 transitions, 1761 flow [2024-06-14 12:46:33,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:46:33,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:46:33,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-14 12:46:33,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-14 12:46:33,593 INFO L175 Difference]: Start difference. First operand has 209 places, 138 transitions, 1161 flow. Second operand 10 states and 115 transitions. [2024-06-14 12:46:33,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 160 transitions, 1761 flow [2024-06-14 12:46:33,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 160 transitions, 1715 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 12:46:33,794 INFO L231 Difference]: Finished difference. Result has 206 places, 139 transitions, 1273 flow [2024-06-14 12:46:33,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1119, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1273, PETRI_PLACES=206, PETRI_TRANSITIONS=139} [2024-06-14 12:46:33,794 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 176 predicate places. [2024-06-14 12:46:33,794 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 139 transitions, 1273 flow [2024-06-14 12:46:33,794 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 12:46:33,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:33,795 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 12:46:33,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-14 12:46:33,795 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 12:46:33,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:33,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1035011350, now seen corresponding path program 10 times [2024-06-14 12:46:33,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:33,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391697559] [2024-06-14 12:46:33,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:33,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:33,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:34,584 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 12:46:34,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:34,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391697559] [2024-06-14 12:46:34,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391697559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:34,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:34,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:46:34,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918453327] [2024-06-14 12:46:34,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:34,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:46:34,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:34,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:46:34,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:46:34,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:46:34,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 139 transitions, 1273 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 12:46:34,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:34,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:46:34,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:34,992 INFO L124 PetriNetUnfolderBase]: 473/930 cut-off events. [2024-06-14 12:46:34,992 INFO L125 PetriNetUnfolderBase]: For 140575/140581 co-relation queries the response was YES. [2024-06-14 12:46:34,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6904 conditions, 930 events. 473/930 cut-off events. For 140575/140581 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4851 event pairs, 128 based on Foata normal form. 12/939 useless extension candidates. Maximal degree in co-relation 6801. Up to 646 conditions per place. [2024-06-14 12:46:34,998 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 117 selfloop transitions, 36 changer transitions 8/163 dead transitions. [2024-06-14 12:46:34,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 163 transitions, 1849 flow [2024-06-14 12:46:34,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:46:34,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:46:34,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-14 12:46:35,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774193548387097 [2024-06-14 12:46:35,000 INFO L175 Difference]: Start difference. First operand has 206 places, 139 transitions, 1273 flow. Second operand 10 states and 117 transitions. [2024-06-14 12:46:35,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 163 transitions, 1849 flow [2024-06-14 12:46:35,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 163 transitions, 1655 flow, removed 31 selfloop flow, removed 12 redundant places. [2024-06-14 12:46:35,251 INFO L231 Difference]: Finished difference. Result has 204 places, 136 transitions, 1138 flow [2024-06-14 12:46:35,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1079, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1138, PETRI_PLACES=204, PETRI_TRANSITIONS=136} [2024-06-14 12:46:35,253 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 174 predicate places. [2024-06-14 12:46:35,254 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 136 transitions, 1138 flow [2024-06-14 12:46:35,254 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 12:46:35,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:35,254 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 12:46:35,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-14 12:46:35,254 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 12:46:35,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:35,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1034772340, now seen corresponding path program 11 times [2024-06-14 12:46:35,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:35,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491756133] [2024-06-14 12:46:35,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:35,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:35,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:36,367 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 12:46:36,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:36,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491756133] [2024-06-14 12:46:36,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491756133] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:36,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:36,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:46:36,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520394514] [2024-06-14 12:46:36,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:36,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:46:36,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:36,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:46:36,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:46:36,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:46:36,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 136 transitions, 1138 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 12:46:36,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:36,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:46:36,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:36,757 INFO L124 PetriNetUnfolderBase]: 470/925 cut-off events. [2024-06-14 12:46:36,758 INFO L125 PetriNetUnfolderBase]: For 147944/147950 co-relation queries the response was YES. [2024-06-14 12:46:36,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6682 conditions, 925 events. 470/925 cut-off events. For 147944/147950 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4819 event pairs, 136 based on Foata normal form. 14/936 useless extension candidates. Maximal degree in co-relation 6583. Up to 758 conditions per place. [2024-06-14 12:46:36,766 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 117 selfloop transitions, 30 changer transitions 9/158 dead transitions. [2024-06-14 12:46:36,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 158 transitions, 1538 flow [2024-06-14 12:46:36,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:46:36,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:46:36,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-14 12:46:36,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-14 12:46:36,769 INFO L175 Difference]: Start difference. First operand has 204 places, 136 transitions, 1138 flow. Second operand 11 states and 120 transitions. [2024-06-14 12:46:36,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 158 transitions, 1538 flow [2024-06-14 12:46:37,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 158 transitions, 1468 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-14 12:46:37,022 INFO L231 Difference]: Finished difference. Result has 203 places, 133 transitions, 1110 flow [2024-06-14 12:46:37,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1068, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1110, PETRI_PLACES=203, PETRI_TRANSITIONS=133} [2024-06-14 12:46:37,022 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 173 predicate places. [2024-06-14 12:46:37,023 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 133 transitions, 1110 flow [2024-06-14 12:46:37,023 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 12:46:37,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:37,023 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 12:46:37,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-14 12:46:37,023 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 12:46:37,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:37,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1072124852, now seen corresponding path program 12 times [2024-06-14 12:46:37,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:37,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008706770] [2024-06-14 12:46:37,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:37,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:37,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:37,814 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 12:46:37,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:37,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008706770] [2024-06-14 12:46:37,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008706770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:37,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:37,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:46:37,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133545122] [2024-06-14 12:46:37,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:37,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:46:37,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:37,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:46:37,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:46:37,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:46:37,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 133 transitions, 1110 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 12:46:37,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:37,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:46:37,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:38,170 INFO L124 PetriNetUnfolderBase]: 446/885 cut-off events. [2024-06-14 12:46:38,171 INFO L125 PetriNetUnfolderBase]: For 133731/133737 co-relation queries the response was YES. [2024-06-14 12:46:38,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6173 conditions, 885 events. 446/885 cut-off events. For 133731/133737 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4594 event pairs, 128 based on Foata normal form. 14/896 useless extension candidates. Maximal degree in co-relation 6075. Up to 689 conditions per place. [2024-06-14 12:46:38,178 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 102 selfloop transitions, 35 changer transitions 16/155 dead transitions. [2024-06-14 12:46:38,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 155 transitions, 1504 flow [2024-06-14 12:46:38,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:46:38,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:46:38,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-14 12:46:38,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-14 12:46:38,179 INFO L175 Difference]: Start difference. First operand has 203 places, 133 transitions, 1110 flow. Second operand 11 states and 123 transitions. [2024-06-14 12:46:38,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 155 transitions, 1504 flow [2024-06-14 12:46:38,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 155 transitions, 1438 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 12:46:38,390 INFO L231 Difference]: Finished difference. Result has 201 places, 127 transitions, 1073 flow [2024-06-14 12:46:38,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1044, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1073, PETRI_PLACES=201, PETRI_TRANSITIONS=127} [2024-06-14 12:46:38,391 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 171 predicate places. [2024-06-14 12:46:38,391 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 127 transitions, 1073 flow [2024-06-14 12:46:38,391 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 12:46:38,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:38,391 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 12:46:38,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-14 12:46:38,392 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 12:46:38,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:38,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1418948644, now seen corresponding path program 13 times [2024-06-14 12:46:38,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:38,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704748735] [2024-06-14 12:46:38,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:38,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:38,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:39,210 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 12:46:39,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:39,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704748735] [2024-06-14 12:46:39,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704748735] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:39,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:39,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:46:39,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554326987] [2024-06-14 12:46:39,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:39,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:46:39,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:39,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:46:39,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:46:39,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:46:39,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 127 transitions, 1073 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 12:46:39,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:39,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:46:39,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:39,601 INFO L124 PetriNetUnfolderBase]: 451/903 cut-off events. [2024-06-14 12:46:39,601 INFO L125 PetriNetUnfolderBase]: For 150326/150326 co-relation queries the response was YES. [2024-06-14 12:46:39,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6895 conditions, 903 events. 451/903 cut-off events. For 150326/150326 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4707 event pairs, 136 based on Foata normal form. 8/910 useless extension candidates. Maximal degree in co-relation 6798. Up to 663 conditions per place. [2024-06-14 12:46:39,608 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 122 selfloop transitions, 16 changer transitions 8/148 dead transitions. [2024-06-14 12:46:39,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 148 transitions, 1603 flow [2024-06-14 12:46:39,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:46:39,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:46:39,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-14 12:46:39,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-14 12:46:39,610 INFO L175 Difference]: Start difference. First operand has 201 places, 127 transitions, 1073 flow. Second operand 10 states and 107 transitions. [2024-06-14 12:46:39,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 148 transitions, 1603 flow [2024-06-14 12:46:39,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 148 transitions, 1513 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-14 12:46:39,816 INFO L231 Difference]: Finished difference. Result has 194 places, 124 transitions, 1004 flow [2024-06-14 12:46:39,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=991, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1004, PETRI_PLACES=194, PETRI_TRANSITIONS=124} [2024-06-14 12:46:39,817 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 164 predicate places. [2024-06-14 12:46:39,817 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 124 transitions, 1004 flow [2024-06-14 12:46:39,817 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 12:46:39,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:39,817 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 12:46:39,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-14 12:46:39,818 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 12:46:39,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:39,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1418957014, now seen corresponding path program 14 times [2024-06-14 12:46:39,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:39,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309142222] [2024-06-14 12:46:39,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:39,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:39,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:40,712 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 12:46:40,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:40,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309142222] [2024-06-14 12:46:40,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309142222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:40,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:40,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:46:40,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652628465] [2024-06-14 12:46:40,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:40,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:46:40,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:40,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:46:40,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:46:40,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:46:40,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 124 transitions, 1004 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 12:46:40,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:40,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:46:40,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:41,111 INFO L124 PetriNetUnfolderBase]: 415/835 cut-off events. [2024-06-14 12:46:41,111 INFO L125 PetriNetUnfolderBase]: For 119434/119434 co-relation queries the response was YES. [2024-06-14 12:46:41,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5601 conditions, 835 events. 415/835 cut-off events. For 119434/119434 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4286 event pairs, 128 based on Foata normal form. 12/846 useless extension candidates. Maximal degree in co-relation 5507. Up to 732 conditions per place. [2024-06-14 12:46:41,118 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 113 selfloop transitions, 16 changer transitions 10/141 dead transitions. [2024-06-14 12:46:41,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 141 transitions, 1350 flow [2024-06-14 12:46:41,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:46:41,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:46:41,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-14 12:46:41,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-14 12:46:41,120 INFO L175 Difference]: Start difference. First operand has 194 places, 124 transitions, 1004 flow. Second operand 10 states and 105 transitions. [2024-06-14 12:46:41,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 141 transitions, 1350 flow [2024-06-14 12:46:41,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 141 transitions, 1285 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-14 12:46:41,355 INFO L231 Difference]: Finished difference. Result has 193 places, 118 transitions, 932 flow [2024-06-14 12:46:41,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=939, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=932, PETRI_PLACES=193, PETRI_TRANSITIONS=118} [2024-06-14 12:46:41,356 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 163 predicate places. [2024-06-14 12:46:41,356 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 118 transitions, 932 flow [2024-06-14 12:46:41,356 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 12:46:41,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:41,356 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 12:46:41,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-14 12:46:41,357 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 12:46:41,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:41,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1408829314, now seen corresponding path program 15 times [2024-06-14 12:46:41,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:41,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110938060] [2024-06-14 12:46:41,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:41,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:41,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:42,196 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 12:46:42,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:42,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110938060] [2024-06-14 12:46:42,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110938060] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:42,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:42,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:46:42,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972701694] [2024-06-14 12:46:42,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:42,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:46:42,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:42,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:46:42,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:46:42,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:46:42,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 118 transitions, 932 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 12:46:42,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:42,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:46:42,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:42,596 INFO L124 PetriNetUnfolderBase]: 392/794 cut-off events. [2024-06-14 12:46:42,596 INFO L125 PetriNetUnfolderBase]: For 101339/101339 co-relation queries the response was YES. [2024-06-14 12:46:42,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5228 conditions, 794 events. 392/794 cut-off events. For 101339/101339 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4024 event pairs, 117 based on Foata normal form. 8/801 useless extension candidates. Maximal degree in co-relation 5135. Up to 632 conditions per place. [2024-06-14 12:46:42,602 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 116 selfloop transitions, 12 changer transitions 11/141 dead transitions. [2024-06-14 12:46:42,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 141 transitions, 1444 flow [2024-06-14 12:46:42,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:46:42,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:46:42,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-14 12:46:42,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3343108504398827 [2024-06-14 12:46:42,603 INFO L175 Difference]: Start difference. First operand has 193 places, 118 transitions, 932 flow. Second operand 11 states and 114 transitions. [2024-06-14 12:46:42,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 141 transitions, 1444 flow [2024-06-14 12:46:42,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 141 transitions, 1338 flow, removed 4 selfloop flow, removed 16 redundant places. [2024-06-14 12:46:42,790 INFO L231 Difference]: Finished difference. Result has 187 places, 114 transitions, 833 flow [2024-06-14 12:46:42,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=828, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=833, PETRI_PLACES=187, PETRI_TRANSITIONS=114} [2024-06-14 12:46:42,791 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 157 predicate places. [2024-06-14 12:46:42,791 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 114 transitions, 833 flow [2024-06-14 12:46:42,791 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 12:46:42,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:42,791 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 12:46:42,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-14 12:46:42,792 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 12:46:42,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:42,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1704287524, now seen corresponding path program 16 times [2024-06-14 12:46:42,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:42,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627934408] [2024-06-14 12:46:42,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:42,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:42,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:43,929 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 12:46:43,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:43,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627934408] [2024-06-14 12:46:43,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627934408] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:43,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:43,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:46:43,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351701998] [2024-06-14 12:46:43,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:43,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:46:43,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:43,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:46:43,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:46:44,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:46:44,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 114 transitions, 833 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 12:46:44,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:44,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:46:44,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:44,326 INFO L124 PetriNetUnfolderBase]: 371/755 cut-off events. [2024-06-14 12:46:44,326 INFO L125 PetriNetUnfolderBase]: For 97101/97101 co-relation queries the response was YES. [2024-06-14 12:46:44,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4699 conditions, 755 events. 371/755 cut-off events. For 97101/97101 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3766 event pairs, 117 based on Foata normal form. 10/764 useless extension candidates. Maximal degree in co-relation 4607. Up to 669 conditions per place. [2024-06-14 12:46:44,332 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 109 selfloop transitions, 12 changer transitions 9/132 dead transitions. [2024-06-14 12:46:44,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 132 transitions, 1163 flow [2024-06-14 12:46:44,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:46:44,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:46:44,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-14 12:46:44,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31085043988269795 [2024-06-14 12:46:44,333 INFO L175 Difference]: Start difference. First operand has 187 places, 114 transitions, 833 flow. Second operand 11 states and 106 transitions. [2024-06-14 12:46:44,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 132 transitions, 1163 flow [2024-06-14 12:46:44,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 132 transitions, 1136 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 12:46:44,502 INFO L231 Difference]: Finished difference. Result has 183 places, 111 transitions, 813 flow [2024-06-14 12:46:44,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=806, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=813, PETRI_PLACES=183, PETRI_TRANSITIONS=111} [2024-06-14 12:46:44,503 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 153 predicate places. [2024-06-14 12:46:44,503 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 111 transitions, 813 flow [2024-06-14 12:46:44,503 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 12:46:44,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:44,503 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 12:46:44,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-14 12:46:44,503 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 12:46:44,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:44,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1295675588, now seen corresponding path program 1 times [2024-06-14 12:46:44,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:44,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849342876] [2024-06-14 12:46:44,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:44,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:44,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:45,725 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 12:46:45,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:45,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849342876] [2024-06-14 12:46:45,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849342876] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:45,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:45,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:46:45,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669302577] [2024-06-14 12:46:45,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:45,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:46:45,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:45,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:46:45,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:46:45,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:46:45,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 111 transitions, 813 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:46:45,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:45,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:46:45,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:46,179 INFO L124 PetriNetUnfolderBase]: 353/725 cut-off events. [2024-06-14 12:46:46,179 INFO L125 PetriNetUnfolderBase]: For 82979/82979 co-relation queries the response was YES. [2024-06-14 12:46:46,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4505 conditions, 725 events. 353/725 cut-off events. For 82979/82979 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3594 event pairs, 105 based on Foata normal form. 6/730 useless extension candidates. Maximal degree in co-relation 4415. Up to 600 conditions per place. [2024-06-14 12:46:46,185 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 98 selfloop transitions, 13 changer transitions 21/134 dead transitions. [2024-06-14 12:46:46,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 134 transitions, 1141 flow [2024-06-14 12:46:46,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:46:46,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:46:46,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2024-06-14 12:46:46,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-14 12:46:46,186 INFO L175 Difference]: Start difference. First operand has 183 places, 111 transitions, 813 flow. Second operand 11 states and 110 transitions. [2024-06-14 12:46:46,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 134 transitions, 1141 flow [2024-06-14 12:46:46,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 134 transitions, 1107 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 12:46:46,371 INFO L231 Difference]: Finished difference. Result has 181 places, 105 transitions, 771 flow [2024-06-14 12:46:46,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=781, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=771, PETRI_PLACES=181, PETRI_TRANSITIONS=105} [2024-06-14 12:46:46,371 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 151 predicate places. [2024-06-14 12:46:46,371 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 105 transitions, 771 flow [2024-06-14 12:46:46,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:46:46,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:46,372 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 12:46:46,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-14 12:46:46,372 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 12:46:46,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:46,372 INFO L85 PathProgramCache]: Analyzing trace with hash -625937400, now seen corresponding path program 2 times [2024-06-14 12:46:46,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:46,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274940492] [2024-06-14 12:46:46,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:46,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:46,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:47,526 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 12:46:47,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:47,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274940492] [2024-06-14 12:46:47,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274940492] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:47,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:47,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:46:47,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290281245] [2024-06-14 12:46:47,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:47,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:46:47,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:47,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:46:47,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:46:47,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:46:47,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 105 transitions, 771 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:46:47,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:47,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:46:47,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:48,045 INFO L124 PetriNetUnfolderBase]: 326/676 cut-off events. [2024-06-14 12:46:48,045 INFO L125 PetriNetUnfolderBase]: For 80608/80608 co-relation queries the response was YES. [2024-06-14 12:46:48,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4278 conditions, 676 events. 326/676 cut-off events. For 80608/80608 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3311 event pairs, 95 based on Foata normal form. 6/681 useless extension candidates. Maximal degree in co-relation 4189. Up to 551 conditions per place. [2024-06-14 12:46:48,050 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 91 selfloop transitions, 16 changer transitions 16/125 dead transitions. [2024-06-14 12:46:48,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 125 transitions, 1071 flow [2024-06-14 12:46:48,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:46:48,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:46:48,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 107 transitions. [2024-06-14 12:46:48,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31378299120234604 [2024-06-14 12:46:48,051 INFO L175 Difference]: Start difference. First operand has 181 places, 105 transitions, 771 flow. Second operand 11 states and 107 transitions. [2024-06-14 12:46:48,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 125 transitions, 1071 flow [2024-06-14 12:46:48,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 125 transitions, 1021 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-14 12:46:48,230 INFO L231 Difference]: Finished difference. Result has 172 places, 99 transitions, 710 flow [2024-06-14 12:46:48,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=721, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=710, PETRI_PLACES=172, PETRI_TRANSITIONS=99} [2024-06-14 12:46:48,230 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 142 predicate places. [2024-06-14 12:46:48,230 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 99 transitions, 710 flow [2024-06-14 12:46:48,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:46:48,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:48,231 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 12:46:48,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-14 12:46:48,231 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 12:46:48,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:48,232 INFO L85 PathProgramCache]: Analyzing trace with hash -920372426, now seen corresponding path program 3 times [2024-06-14 12:46:48,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:48,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393831419] [2024-06-14 12:46:48,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:48,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:48,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:49,406 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 12:46:49,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:49,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393831419] [2024-06-14 12:46:49,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393831419] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:49,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:49,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:46:49,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922220164] [2024-06-14 12:46:49,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:49,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:46:49,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:49,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:46:49,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:46:49,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:46:49,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 99 transitions, 710 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:46:49,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:49,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:46:49,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:49,784 INFO L124 PetriNetUnfolderBase]: 305/641 cut-off events. [2024-06-14 12:46:49,784 INFO L125 PetriNetUnfolderBase]: For 71057/71057 co-relation queries the response was YES. [2024-06-14 12:46:49,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3869 conditions, 641 events. 305/641 cut-off events. For 71057/71057 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3119 event pairs, 100 based on Foata normal form. 8/648 useless extension candidates. Maximal degree in co-relation 3785. Up to 505 conditions per place. [2024-06-14 12:46:49,788 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 85 selfloop transitions, 22 changer transitions 9/118 dead transitions. [2024-06-14 12:46:49,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 118 transitions, 998 flow [2024-06-14 12:46:49,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:46:49,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:46:49,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 109 transitions. [2024-06-14 12:46:49,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3196480938416422 [2024-06-14 12:46:49,789 INFO L175 Difference]: Start difference. First operand has 172 places, 99 transitions, 710 flow. Second operand 11 states and 109 transitions. [2024-06-14 12:46:49,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 118 transitions, 998 flow [2024-06-14 12:46:49,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 118 transitions, 958 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 12:46:49,905 INFO L231 Difference]: Finished difference. Result has 166 places, 95 transitions, 679 flow [2024-06-14 12:46:49,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=679, PETRI_PLACES=166, PETRI_TRANSITIONS=95} [2024-06-14 12:46:49,905 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 136 predicate places. [2024-06-14 12:46:49,905 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 95 transitions, 679 flow [2024-06-14 12:46:49,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:46:49,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:49,906 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 12:46:49,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-14 12:46:49,906 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 12:46:49,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:49,906 INFO L85 PathProgramCache]: Analyzing trace with hash -622218330, now seen corresponding path program 4 times [2024-06-14 12:46:49,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:49,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909996382] [2024-06-14 12:46:49,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:49,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:49,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:51,260 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 12:46:51,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:51,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909996382] [2024-06-14 12:46:51,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909996382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:51,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:51,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:46:51,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829809359] [2024-06-14 12:46:51,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:51,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:46:51,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:51,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:46:51,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:46:51,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:46:51,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 95 transitions, 679 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:46:51,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:51,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:46:51,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:51,723 INFO L124 PetriNetUnfolderBase]: 296/626 cut-off events. [2024-06-14 12:46:51,723 INFO L125 PetriNetUnfolderBase]: For 60686/60686 co-relation queries the response was YES. [2024-06-14 12:46:51,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3710 conditions, 626 events. 296/626 cut-off events. For 60686/60686 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3034 event pairs, 96 based on Foata normal form. 6/631 useless extension candidates. Maximal degree in co-relation 3629. Up to 493 conditions per place. [2024-06-14 12:46:51,727 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 82 selfloop transitions, 18 changer transitions 13/115 dead transitions. [2024-06-14 12:46:51,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 115 transitions, 963 flow [2024-06-14 12:46:51,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:46:51,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:46:51,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 107 transitions. [2024-06-14 12:46:51,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31378299120234604 [2024-06-14 12:46:51,728 INFO L175 Difference]: Start difference. First operand has 166 places, 95 transitions, 679 flow. Second operand 11 states and 107 transitions. [2024-06-14 12:46:51,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 115 transitions, 963 flow [2024-06-14 12:46:51,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 115 transitions, 878 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-14 12:46:51,829 INFO L231 Difference]: Finished difference. Result has 162 places, 90 transitions, 601 flow [2024-06-14 12:46:51,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=596, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=601, PETRI_PLACES=162, PETRI_TRANSITIONS=90} [2024-06-14 12:46:51,830 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 132 predicate places. [2024-06-14 12:46:51,830 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 90 transitions, 601 flow [2024-06-14 12:46:51,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:46:51,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:51,830 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 12:46:51,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-14 12:46:51,830 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 12:46:51,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:51,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1943557482, now seen corresponding path program 5 times [2024-06-14 12:46:51,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:51,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824639687] [2024-06-14 12:46:51,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:51,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:51,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:52,963 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 12:46:52,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:52,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824639687] [2024-06-14 12:46:52,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824639687] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:52,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:52,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:46:52,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59656127] [2024-06-14 12:46:52,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:52,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:46:52,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:52,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:46:52,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:46:53,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:46:53,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 90 transitions, 601 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:46:53,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:53,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:46:53,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:53,346 INFO L124 PetriNetUnfolderBase]: 283/603 cut-off events. [2024-06-14 12:46:53,346 INFO L125 PetriNetUnfolderBase]: For 52596/52596 co-relation queries the response was YES. [2024-06-14 12:46:53,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3413 conditions, 603 events. 283/603 cut-off events. For 52596/52596 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2906 event pairs, 94 based on Foata normal form. 6/608 useless extension candidates. Maximal degree in co-relation 3348. Up to 473 conditions per place. [2024-06-14 12:46:53,350 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 70 selfloop transitions, 6 changer transitions 32/110 dead transitions. [2024-06-14 12:46:53,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 110 transitions, 871 flow [2024-06-14 12:46:53,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:46:53,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:46:53,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-14 12:46:53,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31085043988269795 [2024-06-14 12:46:53,354 INFO L175 Difference]: Start difference. First operand has 162 places, 90 transitions, 601 flow. Second operand 11 states and 106 transitions. [2024-06-14 12:46:53,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 110 transitions, 871 flow [2024-06-14 12:46:53,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 110 transitions, 829 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 12:46:53,434 INFO L231 Difference]: Finished difference. Result has 157 places, 74 transitions, 435 flow [2024-06-14 12:46:53,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=559, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=435, PETRI_PLACES=157, PETRI_TRANSITIONS=74} [2024-06-14 12:46:53,434 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 127 predicate places. [2024-06-14 12:46:53,434 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 74 transitions, 435 flow [2024-06-14 12:46:53,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:46:53,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:53,435 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 12:46:53,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-14 12:46:53,435 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 12:46:53,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:53,435 INFO L85 PathProgramCache]: Analyzing trace with hash 746305010, now seen corresponding path program 6 times [2024-06-14 12:46:53,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:53,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041042202] [2024-06-14 12:46:53,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:53,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:53,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:54,506 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 12:46:54,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:54,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041042202] [2024-06-14 12:46:54,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041042202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:54,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:54,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:46:54,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52559745] [2024-06-14 12:46:54,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:54,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:46:54,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:54,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:46:54,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:46:54,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:46:54,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 74 transitions, 435 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 12:46:54,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:54,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:46:54,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:54,808 INFO L124 PetriNetUnfolderBase]: 239/514 cut-off events. [2024-06-14 12:46:54,809 INFO L125 PetriNetUnfolderBase]: For 48563/48563 co-relation queries the response was YES. [2024-06-14 12:46:54,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2962 conditions, 514 events. 239/514 cut-off events. For 48563/48563 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2406 event pairs, 87 based on Foata normal form. 6/519 useless extension candidates. Maximal degree in co-relation 2899. Up to 426 conditions per place. [2024-06-14 12:46:54,811 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 67 selfloop transitions, 11 changer transitions 10/90 dead transitions. [2024-06-14 12:46:54,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 90 transitions, 649 flow [2024-06-14 12:46:54,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:46:54,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:46:54,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 103 transitions. [2024-06-14 12:46:54,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3020527859237537 [2024-06-14 12:46:54,812 INFO L175 Difference]: Start difference. First operand has 157 places, 74 transitions, 435 flow. Second operand 11 states and 103 transitions. [2024-06-14 12:46:54,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 90 transitions, 649 flow [2024-06-14 12:46:54,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 90 transitions, 613 flow, removed 8 selfloop flow, removed 14 redundant places. [2024-06-14 12:46:54,874 INFO L231 Difference]: Finished difference. Result has 138 places, 70 transitions, 407 flow [2024-06-14 12:46:54,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=407, PETRI_PLACES=138, PETRI_TRANSITIONS=70} [2024-06-14 12:46:54,874 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 108 predicate places. [2024-06-14 12:46:54,874 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 70 transitions, 407 flow [2024-06-14 12:46:54,874 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 12:46:54,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:54,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:46:54,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-14 12:46:54,875 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 12:46:54,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:54,875 INFO L85 PathProgramCache]: Analyzing trace with hash -689147680, now seen corresponding path program 7 times [2024-06-14 12:46:54,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:54,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815796517] [2024-06-14 12:46:54,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:54,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:54,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:55,907 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 12:46:55,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:55,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815796517] [2024-06-14 12:46:55,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815796517] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:55,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:55,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:46:55,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937074656] [2024-06-14 12:46:55,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:55,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:46:55,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:55,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:46:55,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:46:55,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:46:55,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 70 transitions, 407 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 12:46:55,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:55,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:46:55,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:56,211 INFO L124 PetriNetUnfolderBase]: 212/457 cut-off events. [2024-06-14 12:46:56,212 INFO L125 PetriNetUnfolderBase]: For 33026/33026 co-relation queries the response was YES. [2024-06-14 12:46:56,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2363 conditions, 457 events. 212/457 cut-off events. For 33026/33026 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2049 event pairs, 76 based on Foata normal form. 6/462 useless extension candidates. Maximal degree in co-relation 2307. Up to 389 conditions per place. [2024-06-14 12:46:56,214 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 61 selfloop transitions, 7 changer transitions 15/85 dead transitions. [2024-06-14 12:46:56,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 85 transitions, 607 flow [2024-06-14 12:46:56,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:46:56,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:46:56,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 100 transitions. [2024-06-14 12:46:56,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2932551319648094 [2024-06-14 12:46:56,215 INFO L175 Difference]: Start difference. First operand has 138 places, 70 transitions, 407 flow. Second operand 11 states and 100 transitions. [2024-06-14 12:46:56,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 85 transitions, 607 flow [2024-06-14 12:46:56,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 85 transitions, 577 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-14 12:46:56,257 INFO L231 Difference]: Finished difference. Result has 132 places, 65 transitions, 370 flow [2024-06-14 12:46:56,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=370, PETRI_PLACES=132, PETRI_TRANSITIONS=65} [2024-06-14 12:46:56,257 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 102 predicate places. [2024-06-14 12:46:56,257 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 65 transitions, 370 flow [2024-06-14 12:46:56,257 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 12:46:56,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:56,257 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 12:46:56,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-14 12:46:56,258 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 12:46:56,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:56,272 INFO L85 PathProgramCache]: Analyzing trace with hash -250503024, now seen corresponding path program 8 times [2024-06-14 12:46:56,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:56,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136955182] [2024-06-14 12:46:56,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:56,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:56,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:57,602 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 12:46:57,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:57,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136955182] [2024-06-14 12:46:57,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136955182] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:57,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:57,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:46:57,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026935939] [2024-06-14 12:46:57,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:57,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:46:57,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:57,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:46:57,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:46:57,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:46:57,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 65 transitions, 370 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:46:57,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:57,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:46:57,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:57,941 INFO L124 PetriNetUnfolderBase]: 202/435 cut-off events. [2024-06-14 12:46:57,941 INFO L125 PetriNetUnfolderBase]: For 28936/28936 co-relation queries the response was YES. [2024-06-14 12:46:57,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2216 conditions, 435 events. 202/435 cut-off events. For 28936/28936 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1912 event pairs, 72 based on Foata normal form. 6/440 useless extension candidates. Maximal degree in co-relation 2163. Up to 357 conditions per place. [2024-06-14 12:46:57,943 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 58 selfloop transitions, 8 changer transitions 14/82 dead transitions. [2024-06-14 12:46:57,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 82 transitions, 568 flow [2024-06-14 12:46:57,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:46:57,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:46:57,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 102 transitions. [2024-06-14 12:46:57,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2991202346041056 [2024-06-14 12:46:57,944 INFO L175 Difference]: Start difference. First operand has 132 places, 65 transitions, 370 flow. Second operand 11 states and 102 transitions. [2024-06-14 12:46:57,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 82 transitions, 568 flow [2024-06-14 12:46:57,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 82 transitions, 544 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-14 12:46:57,970 INFO L231 Difference]: Finished difference. Result has 123 places, 61 transitions, 347 flow [2024-06-14 12:46:57,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=347, PETRI_PLACES=123, PETRI_TRANSITIONS=61} [2024-06-14 12:46:57,971 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 93 predicate places. [2024-06-14 12:46:57,971 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 61 transitions, 347 flow [2024-06-14 12:46:57,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:46:57,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:57,971 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 12:46:57,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-14 12:46:57,972 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 12:46:57,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:57,972 INFO L85 PathProgramCache]: Analyzing trace with hash -517068868, now seen corresponding path program 9 times [2024-06-14 12:46:57,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:57,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041691022] [2024-06-14 12:46:57,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:57,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:57,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:59,105 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 12:46:59,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:59,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041691022] [2024-06-14 12:46:59,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041691022] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:59,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:59,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:46:59,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669357723] [2024-06-14 12:46:59,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:59,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:46:59,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:59,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:46:59,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:46:59,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:46:59,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 61 transitions, 347 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 12:46:59,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:59,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:46:59,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:59,349 INFO L124 PetriNetUnfolderBase]: 188/409 cut-off events. [2024-06-14 12:46:59,350 INFO L125 PetriNetUnfolderBase]: For 23916/23916 co-relation queries the response was YES. [2024-06-14 12:46:59,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2050 conditions, 409 events. 188/409 cut-off events. For 23916/23916 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1769 event pairs, 68 based on Foata normal form. 6/414 useless extension candidates. Maximal degree in co-relation 2001. Up to 331 conditions per place. [2024-06-14 12:46:59,352 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 48 selfloop transitions, 3 changer transitions 25/78 dead transitions. [2024-06-14 12:46:59,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 78 transitions, 537 flow [2024-06-14 12:46:59,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:46:59,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:46:59,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 101 transitions. [2024-06-14 12:46:59,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2961876832844575 [2024-06-14 12:46:59,353 INFO L175 Difference]: Start difference. First operand has 123 places, 61 transitions, 347 flow. Second operand 11 states and 101 transitions. [2024-06-14 12:46:59,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 78 transitions, 537 flow [2024-06-14 12:46:59,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 78 transitions, 513 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 12:46:59,375 INFO L231 Difference]: Finished difference. Result has 117 places, 52 transitions, 287 flow [2024-06-14 12:46:59,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=287, PETRI_PLACES=117, PETRI_TRANSITIONS=52} [2024-06-14 12:46:59,376 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 87 predicate places. [2024-06-14 12:46:59,376 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 52 transitions, 287 flow [2024-06-14 12:46:59,376 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 12:46:59,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:59,376 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 12:46:59,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-14 12:46:59,376 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 12:46:59,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:59,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1769965010, now seen corresponding path program 10 times [2024-06-14 12:46:59,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:59,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296210986] [2024-06-14 12:46:59,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:59,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:59,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:00,377 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 12:47:00,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:00,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296210986] [2024-06-14 12:47:00,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296210986] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:00,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:00,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:47:00,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126548417] [2024-06-14 12:47:00,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:00,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:47:00,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:00,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:47:00,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:47:00,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:47:00,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 52 transitions, 287 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 12:47:00,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:00,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:47:00,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:00,588 INFO L124 PetriNetUnfolderBase]: 151/327 cut-off events. [2024-06-14 12:47:00,588 INFO L125 PetriNetUnfolderBase]: For 16328/16328 co-relation queries the response was YES. [2024-06-14 12:47:00,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1534 conditions, 327 events. 151/327 cut-off events. For 16328/16328 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1327 event pairs, 53 based on Foata normal form. 6/332 useless extension candidates. Maximal degree in co-relation 1488. Up to 265 conditions per place. [2024-06-14 12:47:00,590 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 44 selfloop transitions, 9 changer transitions 11/66 dead transitions. [2024-06-14 12:47:00,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 66 transitions, 445 flow [2024-06-14 12:47:00,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:47:00,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:47:00,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 99 transitions. [2024-06-14 12:47:00,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2903225806451613 [2024-06-14 12:47:00,591 INFO L175 Difference]: Start difference. First operand has 117 places, 52 transitions, 287 flow. Second operand 11 states and 99 transitions. [2024-06-14 12:47:00,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 66 transitions, 445 flow [2024-06-14 12:47:00,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 66 transitions, 421 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-14 12:47:00,604 INFO L231 Difference]: Finished difference. Result has 102 places, 49 transitions, 269 flow [2024-06-14 12:47:00,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=269, PETRI_PLACES=102, PETRI_TRANSITIONS=49} [2024-06-14 12:47:00,604 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 72 predicate places. [2024-06-14 12:47:00,604 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 49 transitions, 269 flow [2024-06-14 12:47:00,604 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 12:47:00,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:00,605 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 12:47:00,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-14 12:47:00,605 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 12:47:00,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:00,605 INFO L85 PathProgramCache]: Analyzing trace with hash 2058282482, now seen corresponding path program 11 times [2024-06-14 12:47:00,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:00,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932677810] [2024-06-14 12:47:00,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:00,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:00,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:01,699 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 12:47:01,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:01,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932677810] [2024-06-14 12:47:01,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932677810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:01,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:01,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:47:01,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441347463] [2024-06-14 12:47:01,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:01,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:47:01,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:01,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:47:01,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:47:01,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:47:01,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 49 transitions, 269 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 12:47:01,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:01,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:47:01,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:01,962 INFO L124 PetriNetUnfolderBase]: 141/309 cut-off events. [2024-06-14 12:47:01,962 INFO L125 PetriNetUnfolderBase]: For 11450/11450 co-relation queries the response was YES. [2024-06-14 12:47:01,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1379 conditions, 309 events. 141/309 cut-off events. For 11450/11450 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1243 event pairs, 51 based on Foata normal form. 6/314 useless extension candidates. Maximal degree in co-relation 1340. Up to 247 conditions per place. [2024-06-14 12:47:01,963 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 39 selfloop transitions, 6 changer transitions 16/63 dead transitions. [2024-06-14 12:47:01,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 63 transitions, 421 flow [2024-06-14 12:47:01,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:47:01,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:47:01,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 98 transitions. [2024-06-14 12:47:01,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2873900293255132 [2024-06-14 12:47:01,964 INFO L175 Difference]: Start difference. First operand has 102 places, 49 transitions, 269 flow. Second operand 11 states and 98 transitions. [2024-06-14 12:47:01,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 63 transitions, 421 flow [2024-06-14 12:47:01,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 63 transitions, 397 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 12:47:01,975 INFO L231 Difference]: Finished difference. Result has 97 places, 44 transitions, 237 flow [2024-06-14 12:47:01,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=237, PETRI_PLACES=97, PETRI_TRANSITIONS=44} [2024-06-14 12:47:01,975 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 67 predicate places. [2024-06-14 12:47:01,975 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 44 transitions, 237 flow [2024-06-14 12:47:01,976 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 12:47:01,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:01,976 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 12:47:01,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-14 12:47:01,976 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 12:47:01,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:01,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1317593096, now seen corresponding path program 12 times [2024-06-14 12:47:01,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:01,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572767572] [2024-06-14 12:47:01,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:01,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:01,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:03,076 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 12:47:03,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:03,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572767572] [2024-06-14 12:47:03,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572767572] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:03,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:03,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:47:03,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510216417] [2024-06-14 12:47:03,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:03,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:47:03,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:03,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:47:03,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:47:03,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:47:03,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 44 transitions, 237 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 12:47:03,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:03,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:47:03,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:03,299 INFO L124 PetriNetUnfolderBase]: 113/249 cut-off events. [2024-06-14 12:47:03,300 INFO L125 PetriNetUnfolderBase]: For 7516/7516 co-relation queries the response was YES. [2024-06-14 12:47:03,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1017 conditions, 249 events. 113/249 cut-off events. For 7516/7516 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 904 event pairs, 38 based on Foata normal form. 6/254 useless extension candidates. Maximal degree in co-relation 980. Up to 171 conditions per place. [2024-06-14 12:47:03,301 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 34 selfloop transitions, 9 changer transitions 13/58 dead transitions. [2024-06-14 12:47:03,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 58 transitions, 379 flow [2024-06-14 12:47:03,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:47:03,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:47:03,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 99 transitions. [2024-06-14 12:47:03,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2903225806451613 [2024-06-14 12:47:03,302 INFO L175 Difference]: Start difference. First operand has 97 places, 44 transitions, 237 flow. Second operand 11 states and 99 transitions. [2024-06-14 12:47:03,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 58 transitions, 379 flow [2024-06-14 12:47:03,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 58 transitions, 357 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-14 12:47:03,308 INFO L231 Difference]: Finished difference. Result has 89 places, 40 transitions, 216 flow [2024-06-14 12:47:03,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=216, PETRI_PLACES=89, PETRI_TRANSITIONS=40} [2024-06-14 12:47:03,308 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 59 predicate places. [2024-06-14 12:47:03,309 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 40 transitions, 216 flow [2024-06-14 12:47:03,309 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 12:47:03,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:03,309 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 12:47:03,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-14 12:47:03,309 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 12:47:03,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:03,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1061618598, now seen corresponding path program 13 times [2024-06-14 12:47:03,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:03,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038893606] [2024-06-14 12:47:03,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:03,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:03,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:04,512 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 12:47:04,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:04,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038893606] [2024-06-14 12:47:04,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038893606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:04,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:04,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:47:04,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923633499] [2024-06-14 12:47:04,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:04,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:47:04,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:04,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:47:04,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:47:04,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:47:04,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 40 transitions, 216 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:04,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:04,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:47:04,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:04,758 INFO L124 PetriNetUnfolderBase]: 104/230 cut-off events. [2024-06-14 12:47:04,758 INFO L125 PetriNetUnfolderBase]: For 5596/5596 co-relation queries the response was YES. [2024-06-14 12:47:04,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 917 conditions, 230 events. 104/230 cut-off events. For 5596/5596 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 808 event pairs, 34 based on Foata normal form. 6/235 useless extension candidates. Maximal degree in co-relation 884. Up to 163 conditions per place. [2024-06-14 12:47:04,759 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 33 selfloop transitions, 9 changer transitions 11/55 dead transitions. [2024-06-14 12:47:04,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 55 transitions, 354 flow [2024-06-14 12:47:04,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:47:04,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:47:04,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 100 transitions. [2024-06-14 12:47:04,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2932551319648094 [2024-06-14 12:47:04,760 INFO L175 Difference]: Start difference. First operand has 89 places, 40 transitions, 216 flow. Second operand 11 states and 100 transitions. [2024-06-14 12:47:04,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 55 transitions, 354 flow [2024-06-14 12:47:04,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 55 transitions, 328 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 12:47:04,765 INFO L231 Difference]: Finished difference. Result has 82 places, 37 transitions, 197 flow [2024-06-14 12:47:04,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=197, PETRI_PLACES=82, PETRI_TRANSITIONS=37} [2024-06-14 12:47:04,765 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 52 predicate places. [2024-06-14 12:47:04,766 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 37 transitions, 197 flow [2024-06-14 12:47:04,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:47:04,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:04,766 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 12:47:04,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-14 12:47:04,766 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 12:47:04,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:04,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1118147156, now seen corresponding path program 14 times [2024-06-14 12:47:04,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:04,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980516399] [2024-06-14 12:47:04,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:04,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:04,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:06,047 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 12:47:06,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:06,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980516399] [2024-06-14 12:47:06,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980516399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:06,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:06,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:47:06,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130077045] [2024-06-14 12:47:06,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:06,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:47:06,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:06,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:47:06,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:47:06,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:47:06,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 37 transitions, 197 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 12:47:06,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:06,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:47:06,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:06,346 INFO L124 PetriNetUnfolderBase]: 94/212 cut-off events. [2024-06-14 12:47:06,346 INFO L125 PetriNetUnfolderBase]: For 4352/4352 co-relation queries the response was YES. [2024-06-14 12:47:06,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 832 conditions, 212 events. 94/212 cut-off events. For 4352/4352 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 723 event pairs, 32 based on Foata normal form. 6/217 useless extension candidates. Maximal degree in co-relation 802. Up to 129 conditions per place. [2024-06-14 12:47:06,347 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 29 selfloop transitions, 9 changer transitions 11/51 dead transitions. [2024-06-14 12:47:06,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 51 transitions, 325 flow [2024-06-14 12:47:06,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:47:06,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:47:06,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 98 transitions. [2024-06-14 12:47:06,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2873900293255132 [2024-06-14 12:47:06,349 INFO L175 Difference]: Start difference. First operand has 82 places, 37 transitions, 197 flow. Second operand 11 states and 98 transitions. [2024-06-14 12:47:06,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 51 transitions, 325 flow [2024-06-14 12:47:06,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 51 transitions, 301 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 12:47:06,353 INFO L231 Difference]: Finished difference. Result has 78 places, 32 transitions, 170 flow [2024-06-14 12:47:06,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=170, PETRI_PLACES=78, PETRI_TRANSITIONS=32} [2024-06-14 12:47:06,353 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 48 predicate places. [2024-06-14 12:47:06,353 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 32 transitions, 170 flow [2024-06-14 12:47:06,353 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 12:47:06,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:06,355 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 12:47:06,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-14 12:47:06,356 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 12:47:06,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:06,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1293519962, now seen corresponding path program 15 times [2024-06-14 12:47:06,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:06,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280156353] [2024-06-14 12:47:06,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:06,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:06,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:07,612 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 12:47:07,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:07,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280156353] [2024-06-14 12:47:07,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280156353] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:07,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:07,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:47:07,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784734622] [2024-06-14 12:47:07,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:07,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:47:07,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:07,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:47:07,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:47:07,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:47:07,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 32 transitions, 170 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 12:47:07,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:07,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:47:07,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:07,841 INFO L124 PetriNetUnfolderBase]: 66/152 cut-off events. [2024-06-14 12:47:07,842 INFO L125 PetriNetUnfolderBase]: For 2396/2396 co-relation queries the response was YES. [2024-06-14 12:47:07,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 542 conditions, 152 events. 66/152 cut-off events. For 2396/2396 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 435 event pairs, 21 based on Foata normal form. 6/157 useless extension candidates. Maximal degree in co-relation 514. Up to 95 conditions per place. [2024-06-14 12:47:07,842 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 22 selfloop transitions, 4 changer transitions 17/45 dead transitions. [2024-06-14 12:47:07,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 45 transitions, 284 flow [2024-06-14 12:47:07,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:47:07,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:47:07,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 95 transitions. [2024-06-14 12:47:07,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2785923753665689 [2024-06-14 12:47:07,843 INFO L175 Difference]: Start difference. First operand has 78 places, 32 transitions, 170 flow. Second operand 11 states and 95 transitions. [2024-06-14 12:47:07,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 45 transitions, 284 flow [2024-06-14 12:47:07,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 45 transitions, 256 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-06-14 12:47:07,845 INFO L231 Difference]: Finished difference. Result has 70 places, 26 transitions, 125 flow [2024-06-14 12:47:07,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=125, PETRI_PLACES=70, PETRI_TRANSITIONS=26} [2024-06-14 12:47:07,846 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 40 predicate places. [2024-06-14 12:47:07,846 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 26 transitions, 125 flow [2024-06-14 12:47:07,846 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 12:47:07,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:07,846 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 12:47:07,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-14 12:47:07,846 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 12:47:07,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:07,847 INFO L85 PathProgramCache]: Analyzing trace with hash -875476058, now seen corresponding path program 16 times [2024-06-14 12:47:07,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:07,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420303471] [2024-06-14 12:47:07,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:07,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:07,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:09,377 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 12:47:09,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:09,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420303471] [2024-06-14 12:47:09,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420303471] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:09,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:09,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:47:09,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307199288] [2024-06-14 12:47:09,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:09,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:47:09,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:09,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:47:09,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:47:09,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:47:09,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 26 transitions, 125 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 12:47:09,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:09,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:47:09,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:09,617 INFO L124 PetriNetUnfolderBase]: 55/127 cut-off events. [2024-06-14 12:47:09,618 INFO L125 PetriNetUnfolderBase]: For 1524/1524 co-relation queries the response was YES. [2024-06-14 12:47:09,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 432 conditions, 127 events. 55/127 cut-off events. For 1524/1524 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 319 event pairs, 17 based on Foata normal form. 6/132 useless extension candidates. Maximal degree in co-relation 408. Up to 60 conditions per place. [2024-06-14 12:47:09,618 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 18 selfloop transitions, 6 changer transitions 14/40 dead transitions. [2024-06-14 12:47:09,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 40 transitions, 231 flow [2024-06-14 12:47:09,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:47:09,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:47:09,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 94 transitions. [2024-06-14 12:47:09,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2756598240469208 [2024-06-14 12:47:09,619 INFO L175 Difference]: Start difference. First operand has 70 places, 26 transitions, 125 flow. Second operand 11 states and 94 transitions. [2024-06-14 12:47:09,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 40 transitions, 231 flow [2024-06-14 12:47:09,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 40 transitions, 213 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-14 12:47:09,621 INFO L231 Difference]: Finished difference. Result has 59 places, 22 transitions, 104 flow [2024-06-14 12:47:09,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=104, PETRI_PLACES=59, PETRI_TRANSITIONS=22} [2024-06-14 12:47:09,621 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 29 predicate places. [2024-06-14 12:47:09,622 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 22 transitions, 104 flow [2024-06-14 12:47:09,622 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 12:47:09,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:09,622 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 12:47:09,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-14 12:47:09,622 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 12:47:09,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:09,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1057899528, now seen corresponding path program 17 times [2024-06-14 12:47:09,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:09,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803800800] [2024-06-14 12:47:09,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:09,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:09,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:10,988 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 12:47:10,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:10,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803800800] [2024-06-14 12:47:10,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803800800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:10,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:10,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:47:10,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389444855] [2024-06-14 12:47:10,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:10,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:47:10,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:10,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:47:10,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:47:11,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:47:11,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 22 transitions, 104 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 12:47:11,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:11,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:47:11,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:11,237 INFO L124 PetriNetUnfolderBase]: 26/68 cut-off events. [2024-06-14 12:47:11,237 INFO L125 PetriNetUnfolderBase]: For 436/436 co-relation queries the response was YES. [2024-06-14 12:47:11,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 68 events. 26/68 cut-off events. For 436/436 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 103 event pairs, 0 based on Foata normal form. 6/73 useless extension candidates. Maximal degree in co-relation 176. Up to 24 conditions per place. [2024-06-14 12:47:11,238 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 0 selfloop transitions, 0 changer transitions 31/31 dead transitions. [2024-06-14 12:47:11,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 31 transitions, 156 flow [2024-06-14 12:47:11,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:47:11,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:47:11,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 85 transitions. [2024-06-14 12:47:11,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24926686217008798 [2024-06-14 12:47:11,239 INFO L175 Difference]: Start difference. First operand has 59 places, 22 transitions, 104 flow. Second operand 11 states and 85 transitions. [2024-06-14 12:47:11,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 31 transitions, 156 flow [2024-06-14 12:47:11,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 31 transitions, 126 flow, removed 1 selfloop flow, removed 15 redundant places. [2024-06-14 12:47:11,239 INFO L231 Difference]: Finished difference. Result has 46 places, 0 transitions, 0 flow [2024-06-14 12:47:11,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=46, PETRI_TRANSITIONS=0} [2024-06-14 12:47:11,240 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 16 predicate places. [2024-06-14 12:47:11,240 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 0 transitions, 0 flow [2024-06-14 12:47:11,240 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 12:47:11,243 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-14 12:47:11,244 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-14 12:47:11,248 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-14 12:47:11,251 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-14 12:47:11,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-14 12:47:11,260 INFO L445 BasicCegarLoop]: Path program histogram: [19, 17, 16, 10, 10, 10, 6, 5, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:47:11,263 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-14 12:47:11,263 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-14 12:47:11,268 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-14 12:47:11,268 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-14 12:47:11,269 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.06 12:47:11 BasicIcfg [2024-06-14 12:47:11,269 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-14 12:47:11,270 INFO L158 Benchmark]: Toolchain (without parser) took 166507.23ms. Allocated memory was 153.1MB in the beginning and 1.1GB in the end (delta: 960.5MB). Free memory was 90.7MB in the beginning and 481.6MB in the end (delta: -390.8MB). Peak memory consumption was 571.1MB. Max. memory is 16.1GB. [2024-06-14 12:47:11,270 INFO L158 Benchmark]: Witness Parser took 0.10ms. Allocated memory is still 153.1MB. Free memory is still 120.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 12:47:11,270 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 153.1MB. Free memory is still 114.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 12:47:11,270 INFO L158 Benchmark]: CACSL2BoogieTranslator took 552.08ms. Allocated memory is still 153.1MB. Free memory was 90.4MB in the beginning and 56.1MB in the end (delta: 34.3MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2024-06-14 12:47:11,271 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.07ms. Allocated memory is still 153.1MB. Free memory was 56.1MB in the beginning and 52.7MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-14 12:47:11,271 INFO L158 Benchmark]: Boogie Preprocessor took 69.62ms. Allocated memory is still 153.1MB. Free memory was 52.7MB in the beginning and 49.2MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-14 12:47:11,271 INFO L158 Benchmark]: RCFGBuilder took 707.83ms. Allocated memory was 153.1MB in the beginning and 205.5MB in the end (delta: 52.4MB). Free memory was 48.8MB in the beginning and 122.6MB in the end (delta: -73.8MB). Peak memory consumption was 25.1MB. Max. memory is 16.1GB. [2024-06-14 12:47:11,271 INFO L158 Benchmark]: TraceAbstraction took 165116.32ms. Allocated memory was 205.5MB in the beginning and 1.1GB in the end (delta: 908.1MB). Free memory was 121.6MB in the beginning and 481.6MB in the end (delta: -360.0MB). Peak memory consumption was 548.1MB. Max. memory is 16.1GB. [2024-06-14 12:47:11,272 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.10ms. Allocated memory is still 153.1MB. Free memory is still 120.3MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.13ms. Allocated memory is still 153.1MB. Free memory is still 114.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 552.08ms. Allocated memory is still 153.1MB. Free memory was 90.4MB in the beginning and 56.1MB in the end (delta: 34.3MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.07ms. Allocated memory is still 153.1MB. Free memory was 56.1MB in the beginning and 52.7MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 69.62ms. Allocated memory is still 153.1MB. Free memory was 52.7MB in the beginning and 49.2MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 707.83ms. Allocated memory was 153.1MB in the beginning and 205.5MB in the end (delta: 52.4MB). Free memory was 48.8MB in the beginning and 122.6MB in the end (delta: -73.8MB). Peak memory consumption was 25.1MB. Max. memory is 16.1GB. * TraceAbstraction took 165116.32ms. Allocated memory was 205.5MB in the beginning and 1.1GB in the end (delta: 908.1MB). Free memory was 121.6MB in the beginning and 481.6MB in the end (delta: -360.0MB). Peak memory consumption was 548.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 813]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 814]: 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, 49 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: 165.0s, OverallIterations: 126, TraceHistogramMax: 1, PathProgramHistogramMax: 19, EmptinessCheckTime: 0.0s, AutomataDifference: 52.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6244 SdHoareTripleChecker+Valid, 25.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5351 mSDsluCounter, 2529 SdHoareTripleChecker+Invalid, 21.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1953 mSDsCounter, 1309 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 42370 IncrementalHoareTripleChecker+Invalid, 43679 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1309 mSolverCounterUnsat, 576 mSDtfsCounter, 42370 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1324 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 1295 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2492 ImplicationChecksByTransitivity, 31.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1778occurred in iteration=65, InterpolantAutomatonStates: 1162, 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: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 110.5s InterpolantComputationTime, 2092 NumberOfCodeBlocks, 2092 NumberOfCodeBlocksAsserted, 126 NumberOfCheckSat, 1966 ConstructedInterpolants, 0 QuantifiedInterpolants, 82514 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 126 InterpolantComputations, 126 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 12:47:11,325 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