./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi004.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/rfi004.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version bcb38a6f 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/rfi004.i ./goblint.2024-05-21_14-57-05.files/protection/rfi004.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-bcb38a6-m [2024-06-04 15:25:38,028 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-04 15:25:38,093 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-04 15:25:38,098 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-04 15:25:38,098 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-04 15:25:38,137 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-04 15:25:38,138 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-04 15:25:38,138 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-04 15:25:38,139 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-04 15:25:38,139 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-04 15:25:38,140 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-04 15:25:38,140 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-04 15:25:38,140 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-04 15:25:38,141 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-04 15:25:38,141 INFO L153 SettingsManager]: * Use SBE=true [2024-06-04 15:25:38,141 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-04 15:25:38,142 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-04 15:25:38,142 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-04 15:25:38,142 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-04 15:25:38,142 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-04 15:25:38,143 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-04 15:25:38,145 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-04 15:25:38,145 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-04 15:25:38,146 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-04 15:25:38,146 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-04 15:25:38,146 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-04 15:25:38,146 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-04 15:25:38,146 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-04 15:25:38,146 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-04 15:25:38,147 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-04 15:25:38,147 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-04 15:25:38,148 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-04 15:25:38,148 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 15:25:38,148 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-04 15:25:38,148 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-04 15:25:38,149 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-04 15:25:38,149 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-04 15:25:38,149 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-04 15:25:38,149 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-04 15:25:38,149 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-04 15:25:38,149 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-04 15:25:38,150 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-04 15:25:38,164 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-04 15:25:38,164 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-04 15:25:38,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-04 15:25:38,345 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-04 15:25:38,346 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-04 15:25:38,347 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-04 15:25:38,348 INFO L274 PluginConnector]: CDTParser initialized [2024-06-04 15:25:38,348 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi004.i [2024-06-04 15:25:39,289 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-04 15:25:39,506 INFO L384 CDTParser]: Found 1 translation units. [2024-06-04 15:25:39,506 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi004.i [2024-06-04 15:25:39,522 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df279521a/e38e16dfeda14ece92e54b15cc48b094/FLAG7567eae15 [2024-06-04 15:25:39,531 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df279521a/e38e16dfeda14ece92e54b15cc48b094 [2024-06-04 15:25:39,533 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-04 15:25:39,533 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-04 15:25:39,534 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/rfi004.yml/witness.yml [2024-06-04 15:25:39,637 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-04 15:25:39,638 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-04 15:25:39,639 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-04 15:25:39,639 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-04 15:25:39,655 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-04 15:25:39,656 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 03:25:39" (1/2) ... [2024-06-04 15:25:39,657 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e309881 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:25:39, skipping insertion in model container [2024-06-04 15:25:39,657 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 03:25:39" (1/2) ... [2024-06-04 15:25:39,658 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@45d7e0af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:25:39, skipping insertion in model container [2024-06-04 15:25:39,658 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 03:25:39" (2/2) ... [2024-06-04 15:25:39,658 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e309881 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:25:39, skipping insertion in model container [2024-06-04 15:25:39,659 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 03:25:39" (2/2) ... [2024-06-04 15:25:39,659 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-04 15:25:39,707 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-04 15:25:39,708 INFO L97 edCorrectnessWitness]: Location invariant before [L818-L818] ((((((((((((((((! multithreaded || y$r_buff0_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1))) [2024-06-04 15:25:39,708 INFO L97 edCorrectnessWitness]: Location invariant before [L819-L819] ((((((((((((((((! multithreaded || y$r_buff0_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1))) [2024-06-04 15:25:39,708 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-04 15:25:39,709 INFO L106 edCorrectnessWitness]: ghost_update [L816-L816] multithreaded = 1; [2024-06-04 15:25:39,746 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-04 15:25:40,073 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 15:25:40,082 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-04 15:25:40,152 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 15:25:40,193 INFO L206 MainTranslator]: Completed translation [2024-06-04 15:25:40,194 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:25:40 WrapperNode [2024-06-04 15:25:40,194 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-04 15:25:40,195 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-04 15:25:40,195 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-04 15:25:40,195 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-04 15:25:40,200 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:25:40" (1/1) ... [2024-06-04 15:25:40,227 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:25:40" (1/1) ... [2024-06-04 15:25:40,257 INFO L138 Inliner]: procedures = 174, calls = 40, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 121 [2024-06-04 15:25:40,258 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-04 15:25:40,259 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-04 15:25:40,259 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-04 15:25:40,259 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-04 15:25:40,267 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:25:40" (1/1) ... [2024-06-04 15:25:40,268 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:25:40" (1/1) ... [2024-06-04 15:25:40,277 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:25:40" (1/1) ... [2024-06-04 15:25:40,292 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]. [2024-06-04 15:25:40,292 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:25:40" (1/1) ... [2024-06-04 15:25:40,292 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:25:40" (1/1) ... [2024-06-04 15:25:40,297 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:25:40" (1/1) ... [2024-06-04 15:25:40,300 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:25:40" (1/1) ... [2024-06-04 15:25:40,301 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:25:40" (1/1) ... [2024-06-04 15:25:40,302 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:25:40" (1/1) ... [2024-06-04 15:25:40,304 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-04 15:25:40,305 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-04 15:25:40,305 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-04 15:25:40,305 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-04 15:25:40,306 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:25:40" (1/1) ... [2024-06-04 15:25:40,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 15:25:40,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 15:25:40,326 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) [2024-06-04 15:25:40,336 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 [2024-06-04 15:25:40,354 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-04 15:25:40,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-04 15:25:40,355 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-04 15:25:40,355 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-04 15:25:40,355 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-04 15:25:40,355 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-04 15:25:40,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-04 15:25:40,355 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-04 15:25:40,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-04 15:25:40,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-04 15:25:40,356 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-04 15:25:40,446 INFO L244 CfgBuilder]: Building ICFG [2024-06-04 15:25:40,448 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-04 15:25:40,680 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-04 15:25:40,680 INFO L293 CfgBuilder]: Performing block encoding [2024-06-04 15:25:40,841 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-04 15:25:40,842 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-04 15:25:40,843 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 03:25:40 BoogieIcfgContainer [2024-06-04 15:25:40,843 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-04 15:25:40,845 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-04 15:25:40,845 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-04 15:25:40,847 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-04 15:25:40,847 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.06 03:25:39" (1/4) ... [2024-06-04 15:25:40,848 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b563797 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 03:25:40, skipping insertion in model container [2024-06-04 15:25:40,848 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 03:25:39" (2/4) ... [2024-06-04 15:25:40,852 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b563797 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 03:25:40, skipping insertion in model container [2024-06-04 15:25:40,852 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:25:40" (3/4) ... [2024-06-04 15:25:40,852 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b563797 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 03:25:40, skipping insertion in model container [2024-06-04 15:25:40,853 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 03:25:40" (4/4) ... [2024-06-04 15:25:40,853 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi004.i [2024-06-04 15:25:40,866 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-04 15:25:40,866 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-04 15:25:40,866 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-04 15:25:40,898 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-04 15:25:40,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 33 transitions, 74 flow [2024-06-04 15:25:40,948 INFO L124 PetriNetUnfolderBase]: 0/31 cut-off events. [2024-06-04 15:25:40,948 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 15:25:40,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 31 events. 0/31 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 44 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-04 15:25:40,950 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 33 transitions, 74 flow [2024-06-04 15:25:40,952 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 25 transitions, 56 flow [2024-06-04 15:25:40,958 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-04 15:25:40,963 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;@22011070, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-04 15:25:40,963 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-04 15:25:40,967 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-04 15:25:40,968 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-04 15:25:40,968 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 15:25:40,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:40,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-04 15:25:40,970 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)] === [2024-06-04 15:25:40,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:40,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1590784768, now seen corresponding path program 1 times [2024-06-04 15:25:41,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:41,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108284746] [2024-06-04 15:25:41,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:41,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:41,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:41,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:41,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:41,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108284746] [2024-06-04 15:25:41,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108284746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:41,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:41,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-04 15:25:41,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195422793] [2024-06-04 15:25:41,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:41,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-04 15:25:41,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:41,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-04 15:25:41,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-04 15:25:41,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 33 [2024-06-04 15:25:41,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:25:41,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:41,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 33 [2024-06-04 15:25:41,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:41,955 INFO L124 PetriNetUnfolderBase]: 131/270 cut-off events. [2024-06-04 15:25:41,955 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-04 15:25:41,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 528 conditions, 270 events. 131/270 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1073 event pairs, 75 based on Foata normal form. 1/257 useless extension candidates. Maximal degree in co-relation 514. Up to 235 conditions per place. [2024-06-04 15:25:41,960 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 22 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2024-06-04 15:25:41,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 31 transitions, 121 flow [2024-06-04 15:25:41,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-04 15:25:41,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-04 15:25:41,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 60 transitions. [2024-06-04 15:25:41,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6060606060606061 [2024-06-04 15:25:41,971 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 56 flow. Second operand 3 states and 60 transitions. [2024-06-04 15:25:41,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 31 transitions, 121 flow [2024-06-04 15:25:41,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 31 transitions, 118 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-04 15:25:41,975 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 75 flow [2024-06-04 15:25:41,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=75, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2024-06-04 15:25:41,980 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 1 predicate places. [2024-06-04 15:25:41,980 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 75 flow [2024-06-04 15:25:41,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:25:41,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:41,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:41,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-04 15:25:41,981 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)] === [2024-06-04 15:25:41,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:41,983 INFO L85 PathProgramCache]: Analyzing trace with hash -263456755, now seen corresponding path program 1 times [2024-06-04 15:25:41,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:41,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057964224] [2024-06-04 15:25:41,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:41,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:42,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:42,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:42,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:42,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057964224] [2024-06-04 15:25:42,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057964224] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:42,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:42,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-04 15:25:42,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577715183] [2024-06-04 15:25:42,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:42,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-04 15:25:42,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:42,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-04 15:25:42,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-04 15:25:42,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2024-06-04 15:25:42,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 75 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:25:42,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:42,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2024-06-04 15:25:42,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:42,650 INFO L124 PetriNetUnfolderBase]: 147/287 cut-off events. [2024-06-04 15:25:42,650 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2024-06-04 15:25:42,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 649 conditions, 287 events. 147/287 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1095 event pairs, 59 based on Foata normal form. 4/286 useless extension candidates. Maximal degree in co-relation 634. Up to 244 conditions per place. [2024-06-04 15:25:42,655 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 28 selfloop transitions, 5 changer transitions 0/38 dead transitions. [2024-06-04 15:25:42,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 38 transitions, 169 flow [2024-06-04 15:25:42,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-04 15:25:42,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-04 15:25:42,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 75 transitions. [2024-06-04 15:25:42,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5681818181818182 [2024-06-04 15:25:42,659 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 75 flow. Second operand 4 states and 75 transitions. [2024-06-04 15:25:42,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 38 transitions, 169 flow [2024-06-04 15:25:42,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 38 transitions, 166 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-04 15:25:42,663 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 99 flow [2024-06-04 15:25:42,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=99, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2024-06-04 15:25:42,664 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 4 predicate places. [2024-06-04 15:25:42,664 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 99 flow [2024-06-04 15:25:42,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:25:42,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:42,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:42,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-04 15:25:42,666 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:25:42,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:42,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1917780520, now seen corresponding path program 1 times [2024-06-04 15:25:42,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:42,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273646239] [2024-06-04 15:25:42,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:42,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:42,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:43,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:43,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:43,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273646239] [2024-06-04 15:25:43,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273646239] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:43,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:43,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 15:25:43,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227842853] [2024-06-04 15:25:43,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:43,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 15:25:43,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:43,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 15:25:43,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-04 15:25:43,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2024-06-04 15:25:43,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 99 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 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) [2024-06-04 15:25:43,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:43,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2024-06-04 15:25:43,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:43,414 INFO L124 PetriNetUnfolderBase]: 123/253 cut-off events. [2024-06-04 15:25:43,415 INFO L125 PetriNetUnfolderBase]: For 144/144 co-relation queries the response was YES. [2024-06-04 15:25:43,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 634 conditions, 253 events. 123/253 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 977 event pairs, 62 based on Foata normal form. 1/247 useless extension candidates. Maximal degree in co-relation 617. Up to 219 conditions per place. [2024-06-04 15:25:43,416 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 24 selfloop transitions, 6 changer transitions 0/36 dead transitions. [2024-06-04 15:25:43,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 36 transitions, 177 flow [2024-06-04 15:25:43,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 15:25:43,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 15:25:43,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 79 transitions. [2024-06-04 15:25:43,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47878787878787876 [2024-06-04 15:25:43,418 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 99 flow. Second operand 5 states and 79 transitions. [2024-06-04 15:25:43,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 36 transitions, 177 flow [2024-06-04 15:25:43,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 36 transitions, 168 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-04 15:25:43,419 INFO L231 Difference]: Finished difference. Result has 39 places, 31 transitions, 117 flow [2024-06-04 15:25:43,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=117, PETRI_PLACES=39, PETRI_TRANSITIONS=31} [2024-06-04 15:25:43,420 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 7 predicate places. [2024-06-04 15:25:43,420 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 31 transitions, 117 flow [2024-06-04 15:25:43,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 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) [2024-06-04 15:25:43,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:43,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:43,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-04 15:25:43,421 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)] === [2024-06-04 15:25:43,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:43,421 INFO L85 PathProgramCache]: Analyzing trace with hash -2132256803, now seen corresponding path program 1 times [2024-06-04 15:25:43,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:43,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354743302] [2024-06-04 15:25:43,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:43,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:43,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:44,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:44,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:44,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354743302] [2024-06-04 15:25:44,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354743302] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:44,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:44,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 15:25:44,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752540341] [2024-06-04 15:25:44,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:44,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 15:25:44,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:44,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 15:25:44,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-04 15:25:44,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2024-06-04 15:25:44,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 31 transitions, 117 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:25:44,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:44,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2024-06-04 15:25:44,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:44,464 INFO L124 PetriNetUnfolderBase]: 141/280 cut-off events. [2024-06-04 15:25:44,464 INFO L125 PetriNetUnfolderBase]: For 261/261 co-relation queries the response was YES. [2024-06-04 15:25:44,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 752 conditions, 280 events. 141/280 cut-off events. For 261/261 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1072 event pairs, 24 based on Foata normal form. 4/282 useless extension candidates. Maximal degree in co-relation 733. Up to 215 conditions per place. [2024-06-04 15:25:44,466 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 33 selfloop transitions, 8 changer transitions 0/46 dead transitions. [2024-06-04 15:25:44,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 46 transitions, 233 flow [2024-06-04 15:25:44,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:25:44,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:25:44,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 101 transitions. [2024-06-04 15:25:44,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.51010101010101 [2024-06-04 15:25:44,470 INFO L175 Difference]: Start difference. First operand has 39 places, 31 transitions, 117 flow. Second operand 6 states and 101 transitions. [2024-06-04 15:25:44,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 46 transitions, 233 flow [2024-06-04 15:25:44,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 46 transitions, 222 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-04 15:25:44,472 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 131 flow [2024-06-04 15:25:44,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=131, PETRI_PLACES=42, PETRI_TRANSITIONS=32} [2024-06-04 15:25:44,474 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 10 predicate places. [2024-06-04 15:25:44,474 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 131 flow [2024-06-04 15:25:44,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:25:44,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:44,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:44,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-04 15:25:44,474 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)] === [2024-06-04 15:25:44,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:44,475 INFO L85 PathProgramCache]: Analyzing trace with hash 648853829, now seen corresponding path program 1 times [2024-06-04 15:25:44,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:44,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700215800] [2024-06-04 15:25:44,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:44,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:44,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:44,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:44,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:44,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700215800] [2024-06-04 15:25:44,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700215800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:44,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:44,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:25:44,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772143852] [2024-06-04 15:25:44,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:44,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:25:44,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:44,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:25:44,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:25:45,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-04 15:25:45,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 131 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:25:45,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:45,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-04 15:25:45,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:45,155 INFO L124 PetriNetUnfolderBase]: 139/281 cut-off events. [2024-06-04 15:25:45,155 INFO L125 PetriNetUnfolderBase]: For 419/419 co-relation queries the response was YES. [2024-06-04 15:25:45,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 817 conditions, 281 events. 139/281 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1072 event pairs, 41 based on Foata normal form. 1/280 useless extension candidates. Maximal degree in co-relation 797. Up to 242 conditions per place. [2024-06-04 15:25:45,157 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 27 selfloop transitions, 8 changer transitions 0/40 dead transitions. [2024-06-04 15:25:45,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 40 transitions, 223 flow [2024-06-04 15:25:45,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:25:45,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:25:45,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2024-06-04 15:25:45,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2024-06-04 15:25:45,159 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 131 flow. Second operand 6 states and 86 transitions. [2024-06-04 15:25:45,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 40 transitions, 223 flow [2024-06-04 15:25:45,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 40 transitions, 207 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-04 15:25:45,161 INFO L231 Difference]: Finished difference. Result has 45 places, 34 transitions, 148 flow [2024-06-04 15:25:45,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=115, 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=148, PETRI_PLACES=45, PETRI_TRANSITIONS=34} [2024-06-04 15:25:45,161 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 13 predicate places. [2024-06-04 15:25:45,162 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 148 flow [2024-06-04 15:25:45,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:25:45,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:45,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:45,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-04 15:25:45,162 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)] === [2024-06-04 15:25:45,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:45,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1367042023, now seen corresponding path program 1 times [2024-06-04 15:25:45,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:45,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16527860] [2024-06-04 15:25:45,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:45,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:45,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:45,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:45,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:45,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16527860] [2024-06-04 15:25:45,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16527860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:45,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:45,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:25:45,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325483482] [2024-06-04 15:25:45,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:45,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:25:45,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:45,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:25:45,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:25:45,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-04 15:25:45,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 34 transitions, 148 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:25:45,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:45,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-04 15:25:45,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:45,844 INFO L124 PetriNetUnfolderBase]: 156/307 cut-off events. [2024-06-04 15:25:45,844 INFO L125 PetriNetUnfolderBase]: For 680/680 co-relation queries the response was YES. [2024-06-04 15:25:45,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 959 conditions, 307 events. 156/307 cut-off events. For 680/680 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1201 event pairs, 46 based on Foata normal form. 2/307 useless extension candidates. Maximal degree in co-relation 937. Up to 255 conditions per place. [2024-06-04 15:25:45,846 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 32 selfloop transitions, 8 changer transitions 0/46 dead transitions. [2024-06-04 15:25:45,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 46 transitions, 262 flow [2024-06-04 15:25:45,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:25:45,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:25:45,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 90 transitions. [2024-06-04 15:25:45,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-04 15:25:45,847 INFO L175 Difference]: Start difference. First operand has 45 places, 34 transitions, 148 flow. Second operand 6 states and 90 transitions. [2024-06-04 15:25:45,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 46 transitions, 262 flow [2024-06-04 15:25:45,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 46 transitions, 245 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-04 15:25:45,849 INFO L231 Difference]: Finished difference. Result has 47 places, 36 transitions, 164 flow [2024-06-04 15:25:45,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=164, PETRI_PLACES=47, PETRI_TRANSITIONS=36} [2024-06-04 15:25:45,850 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 15 predicate places. [2024-06-04 15:25:45,850 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 36 transitions, 164 flow [2024-06-04 15:25:45,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:25:45,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:45,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:45,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-04 15:25:45,851 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)] === [2024-06-04 15:25:45,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:45,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1360375783, now seen corresponding path program 2 times [2024-06-04 15:25:45,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:45,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107838013] [2024-06-04 15:25:45,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:45,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:45,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:46,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:46,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:46,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107838013] [2024-06-04 15:25:46,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107838013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:46,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:46,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:25:46,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610237848] [2024-06-04 15:25:46,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:46,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:25:46,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:46,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:25:46,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:25:46,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-04 15:25:46,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 36 transitions, 164 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:25:46,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:46,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-04 15:25:46,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:46,506 INFO L124 PetriNetUnfolderBase]: 155/306 cut-off events. [2024-06-04 15:25:46,506 INFO L125 PetriNetUnfolderBase]: For 921/921 co-relation queries the response was YES. [2024-06-04 15:25:46,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1029 conditions, 306 events. 155/306 cut-off events. For 921/921 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1216 event pairs, 49 based on Foata normal form. 2/304 useless extension candidates. Maximal degree in co-relation 1006. Up to 246 conditions per place. [2024-06-04 15:25:46,508 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 29 selfloop transitions, 11 changer transitions 0/46 dead transitions. [2024-06-04 15:25:46,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 46 transitions, 278 flow [2024-06-04 15:25:46,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:25:46,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:25:46,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 90 transitions. [2024-06-04 15:25:46,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-04 15:25:46,509 INFO L175 Difference]: Start difference. First operand has 47 places, 36 transitions, 164 flow. Second operand 6 states and 90 transitions. [2024-06-04 15:25:46,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 46 transitions, 278 flow [2024-06-04 15:25:46,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 46 transitions, 261 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-04 15:25:46,511 INFO L231 Difference]: Finished difference. Result has 49 places, 38 transitions, 190 flow [2024-06-04 15:25:46,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=190, PETRI_PLACES=49, PETRI_TRANSITIONS=38} [2024-06-04 15:25:46,512 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 17 predicate places. [2024-06-04 15:25:46,512 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 38 transitions, 190 flow [2024-06-04 15:25:46,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:25:46,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:46,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:46,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-04 15:25:46,513 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)] === [2024-06-04 15:25:46,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:46,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1360366855, now seen corresponding path program 1 times [2024-06-04 15:25:46,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:46,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503522708] [2024-06-04 15:25:46,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:46,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:46,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:47,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:47,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:47,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503522708] [2024-06-04 15:25:47,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503522708] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:47,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:47,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:25:47,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805499025] [2024-06-04 15:25:47,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:47,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:25:47,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:47,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:25:47,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:25:47,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-04 15:25:47,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 38 transitions, 190 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:25:47,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:47,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-04 15:25:47,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:47,243 INFO L124 PetriNetUnfolderBase]: 144/292 cut-off events. [2024-06-04 15:25:47,243 INFO L125 PetriNetUnfolderBase]: For 916/916 co-relation queries the response was YES. [2024-06-04 15:25:47,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1014 conditions, 292 events. 144/292 cut-off events. For 916/916 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1142 event pairs, 39 based on Foata normal form. 1/291 useless extension candidates. Maximal degree in co-relation 990. Up to 248 conditions per place. [2024-06-04 15:25:47,245 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 32 selfloop transitions, 10 changer transitions 0/47 dead transitions. [2024-06-04 15:25:47,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 47 transitions, 300 flow [2024-06-04 15:25:47,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:25:47,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:25:47,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 98 transitions. [2024-06-04 15:25:47,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-04 15:25:47,246 INFO L175 Difference]: Start difference. First operand has 49 places, 38 transitions, 190 flow. Second operand 7 states and 98 transitions. [2024-06-04 15:25:47,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 47 transitions, 300 flow [2024-06-04 15:25:47,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 47 transitions, 273 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-04 15:25:47,248 INFO L231 Difference]: Finished difference. Result has 52 places, 40 transitions, 202 flow [2024-06-04 15:25:47,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=202, PETRI_PLACES=52, PETRI_TRANSITIONS=40} [2024-06-04 15:25:47,249 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 20 predicate places. [2024-06-04 15:25:47,249 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 40 transitions, 202 flow [2024-06-04 15:25:47,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:25:47,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:47,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:47,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-04 15:25:47,250 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)] === [2024-06-04 15:25:47,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:47,250 INFO L85 PathProgramCache]: Analyzing trace with hash -951238650, now seen corresponding path program 1 times [2024-06-04 15:25:47,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:47,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087171693] [2024-06-04 15:25:47,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:47,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:47,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:47,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:47,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:47,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087171693] [2024-06-04 15:25:47,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087171693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:47,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:47,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:25:47,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923497390] [2024-06-04 15:25:47,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:47,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:25:47,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:47,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:25:47,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:25:47,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:25:47,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 40 transitions, 202 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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) [2024-06-04 15:25:47,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:47,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:25:47,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:48,009 INFO L124 PetriNetUnfolderBase]: 170/328 cut-off events. [2024-06-04 15:25:48,010 INFO L125 PetriNetUnfolderBase]: For 1295/1295 co-relation queries the response was YES. [2024-06-04 15:25:48,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1196 conditions, 328 events. 170/328 cut-off events. For 1295/1295 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1275 event pairs, 45 based on Foata normal form. 2/328 useless extension candidates. Maximal degree in co-relation 1171. Up to 278 conditions per place. [2024-06-04 15:25:48,012 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 40 selfloop transitions, 10 changer transitions 0/54 dead transitions. [2024-06-04 15:25:48,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 54 transitions, 346 flow [2024-06-04 15:25:48,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:25:48,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:25:48,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 97 transitions. [2024-06-04 15:25:48,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4199134199134199 [2024-06-04 15:25:48,013 INFO L175 Difference]: Start difference. First operand has 52 places, 40 transitions, 202 flow. Second operand 7 states and 97 transitions. [2024-06-04 15:25:48,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 54 transitions, 346 flow [2024-06-04 15:25:48,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 54 transitions, 323 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-04 15:25:48,015 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 220 flow [2024-06-04 15:25:48,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=220, PETRI_PLACES=54, PETRI_TRANSITIONS=42} [2024-06-04 15:25:48,016 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 22 predicate places. [2024-06-04 15:25:48,016 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 220 flow [2024-06-04 15:25:48,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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) [2024-06-04 15:25:48,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:48,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:48,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-04 15:25:48,017 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)] === [2024-06-04 15:25:48,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:48,017 INFO L85 PathProgramCache]: Analyzing trace with hash 778291492, now seen corresponding path program 2 times [2024-06-04 15:25:48,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:48,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841013] [2024-06-04 15:25:48,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:48,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:48,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:48,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:48,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:48,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841013] [2024-06-04 15:25:48,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:48,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:48,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:25:48,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180664570] [2024-06-04 15:25:48,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:48,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:25:48,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:48,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:25:48,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:25:48,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:25:48,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 220 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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) [2024-06-04 15:25:48,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:48,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:25:48,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:48,813 INFO L124 PetriNetUnfolderBase]: 181/345 cut-off events. [2024-06-04 15:25:48,813 INFO L125 PetriNetUnfolderBase]: For 1694/1694 co-relation queries the response was YES. [2024-06-04 15:25:48,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1341 conditions, 345 events. 181/345 cut-off events. For 1694/1694 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1411 event pairs, 49 based on Foata normal form. 2/343 useless extension candidates. Maximal degree in co-relation 1315. Up to 267 conditions per place. [2024-06-04 15:25:48,815 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 35 selfloop transitions, 18 changer transitions 0/57 dead transitions. [2024-06-04 15:25:48,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 57 transitions, 406 flow [2024-06-04 15:25:48,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:25:48,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:25:48,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 99 transitions. [2024-06-04 15:25:48,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-04 15:25:48,817 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 220 flow. Second operand 7 states and 99 transitions. [2024-06-04 15:25:48,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 57 transitions, 406 flow [2024-06-04 15:25:48,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 57 transitions, 381 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-04 15:25:48,820 INFO L231 Difference]: Finished difference. Result has 56 places, 46 transitions, 272 flow [2024-06-04 15:25:48,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=272, PETRI_PLACES=56, PETRI_TRANSITIONS=46} [2024-06-04 15:25:48,822 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 24 predicate places. [2024-06-04 15:25:48,824 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 46 transitions, 272 flow [2024-06-04 15:25:48,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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) [2024-06-04 15:25:48,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:48,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:48,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-04 15:25:48,825 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)] === [2024-06-04 15:25:48,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:48,825 INFO L85 PathProgramCache]: Analyzing trace with hash 778024582, now seen corresponding path program 3 times [2024-06-04 15:25:48,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:48,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390330551] [2024-06-04 15:25:48,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:48,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:48,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:49,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:49,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:49,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390330551] [2024-06-04 15:25:49,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390330551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:49,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:49,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:25:49,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270690478] [2024-06-04 15:25:49,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:49,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:25:49,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:49,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:25:49,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:25:49,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:25:49,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 46 transitions, 272 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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) [2024-06-04 15:25:49,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:49,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:25:49,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:49,607 INFO L124 PetriNetUnfolderBase]: 177/339 cut-off events. [2024-06-04 15:25:49,607 INFO L125 PetriNetUnfolderBase]: For 1997/1997 co-relation queries the response was YES. [2024-06-04 15:25:49,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1381 conditions, 339 events. 177/339 cut-off events. For 1997/1997 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1389 event pairs, 51 based on Foata normal form. 2/337 useless extension candidates. Maximal degree in co-relation 1354. Up to 264 conditions per place. [2024-06-04 15:25:49,617 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 35 selfloop transitions, 17 changer transitions 0/56 dead transitions. [2024-06-04 15:25:49,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 56 transitions, 404 flow [2024-06-04 15:25:49,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:25:49,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:25:49,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 99 transitions. [2024-06-04 15:25:49,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-04 15:25:49,619 INFO L175 Difference]: Start difference. First operand has 56 places, 46 transitions, 272 flow. Second operand 7 states and 99 transitions. [2024-06-04 15:25:49,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 56 transitions, 404 flow [2024-06-04 15:25:49,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 56 transitions, 373 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-04 15:25:49,623 INFO L231 Difference]: Finished difference. Result has 60 places, 46 transitions, 280 flow [2024-06-04 15:25:49,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=280, PETRI_PLACES=60, PETRI_TRANSITIONS=46} [2024-06-04 15:25:49,623 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 28 predicate places. [2024-06-04 15:25:49,624 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 46 transitions, 280 flow [2024-06-04 15:25:49,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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) [2024-06-04 15:25:49,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:49,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:49,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-04 15:25:49,625 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)] === [2024-06-04 15:25:49,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:49,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1668217690, now seen corresponding path program 1 times [2024-06-04 15:25:49,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:49,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611098895] [2024-06-04 15:25:49,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:49,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:49,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:50,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:50,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:50,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611098895] [2024-06-04 15:25:50,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611098895] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:50,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:50,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:25:50,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177641583] [2024-06-04 15:25:50,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:50,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:25:50,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:50,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:25:50,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:25:50,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-04 15:25:50,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 46 transitions, 280 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:25:50,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:50,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-04 15:25:50,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:50,619 INFO L124 PetriNetUnfolderBase]: 183/366 cut-off events. [2024-06-04 15:25:50,620 INFO L125 PetriNetUnfolderBase]: For 2437/2437 co-relation queries the response was YES. [2024-06-04 15:25:50,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1523 conditions, 366 events. 183/366 cut-off events. For 2437/2437 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1561 event pairs, 49 based on Foata normal form. 1/365 useless extension candidates. Maximal degree in co-relation 1494. Up to 281 conditions per place. [2024-06-04 15:25:50,622 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 42 selfloop transitions, 16 changer transitions 0/67 dead transitions. [2024-06-04 15:25:50,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 67 transitions, 487 flow [2024-06-04 15:25:50,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:25:50,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:25:50,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 117 transitions. [2024-06-04 15:25:50,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4431818181818182 [2024-06-04 15:25:50,623 INFO L175 Difference]: Start difference. First operand has 60 places, 46 transitions, 280 flow. Second operand 8 states and 117 transitions. [2024-06-04 15:25:50,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 67 transitions, 487 flow [2024-06-04 15:25:50,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 67 transitions, 437 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-04 15:25:50,627 INFO L231 Difference]: Finished difference. Result has 64 places, 55 transitions, 344 flow [2024-06-04 15:25:50,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=344, PETRI_PLACES=64, PETRI_TRANSITIONS=55} [2024-06-04 15:25:50,629 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 32 predicate places. [2024-06-04 15:25:50,629 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 55 transitions, 344 flow [2024-06-04 15:25:50,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:25:50,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:50,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:50,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-04 15:25:50,630 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)] === [2024-06-04 15:25:50,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:50,630 INFO L85 PathProgramCache]: Analyzing trace with hash 527868600, now seen corresponding path program 2 times [2024-06-04 15:25:50,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:50,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256529025] [2024-06-04 15:25:50,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:50,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:50,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:51,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:51,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:51,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256529025] [2024-06-04 15:25:51,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256529025] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:51,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:51,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:25:51,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639226720] [2024-06-04 15:25:51,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:51,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:25:51,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:51,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:25:51,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:25:51,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-04 15:25:51,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 55 transitions, 344 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:25:51,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:51,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-04 15:25:51,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:51,580 INFO L124 PetriNetUnfolderBase]: 181/363 cut-off events. [2024-06-04 15:25:51,581 INFO L125 PetriNetUnfolderBase]: For 2826/2826 co-relation queries the response was YES. [2024-06-04 15:25:51,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1572 conditions, 363 events. 181/363 cut-off events. For 2826/2826 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1571 event pairs, 48 based on Foata normal form. 1/362 useless extension candidates. Maximal degree in co-relation 1540. Up to 273 conditions per place. [2024-06-04 15:25:51,583 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 42 selfloop transitions, 18 changer transitions 0/69 dead transitions. [2024-06-04 15:25:51,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 69 transitions, 524 flow [2024-06-04 15:25:51,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:25:51,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:25:51,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 104 transitions. [2024-06-04 15:25:51,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45021645021645024 [2024-06-04 15:25:51,584 INFO L175 Difference]: Start difference. First operand has 64 places, 55 transitions, 344 flow. Second operand 7 states and 104 transitions. [2024-06-04 15:25:51,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 69 transitions, 524 flow [2024-06-04 15:25:51,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 69 transitions, 492 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-04 15:25:51,588 INFO L231 Difference]: Finished difference. Result has 68 places, 57 transitions, 385 flow [2024-06-04 15:25:51,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=385, PETRI_PLACES=68, PETRI_TRANSITIONS=57} [2024-06-04 15:25:51,589 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 36 predicate places. [2024-06-04 15:25:51,589 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 57 transitions, 385 flow [2024-06-04 15:25:51,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:25:51,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:51,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:51,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-04 15:25:51,590 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)] === [2024-06-04 15:25:51,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:51,590 INFO L85 PathProgramCache]: Analyzing trace with hash 532637144, now seen corresponding path program 1 times [2024-06-04 15:25:51,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:51,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886081813] [2024-06-04 15:25:51,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:51,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:51,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:52,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:52,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:52,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886081813] [2024-06-04 15:25:52,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886081813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:52,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:52,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:25:52,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630789525] [2024-06-04 15:25:52,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:52,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:25:52,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:52,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:25:52,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:25:52,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:25:52,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 57 transitions, 385 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:25:52,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:52,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:25:52,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:52,403 INFO L124 PetriNetUnfolderBase]: 196/382 cut-off events. [2024-06-04 15:25:52,404 INFO L125 PetriNetUnfolderBase]: For 3203/3203 co-relation queries the response was YES. [2024-06-04 15:25:52,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1695 conditions, 382 events. 196/382 cut-off events. For 3203/3203 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1617 event pairs, 45 based on Foata normal form. 2/382 useless extension candidates. Maximal degree in co-relation 1662. Up to 311 conditions per place. [2024-06-04 15:25:52,406 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 55 selfloop transitions, 14 changer transitions 0/73 dead transitions. [2024-06-04 15:25:52,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 73 transitions, 585 flow [2024-06-04 15:25:52,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:25:52,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:25:52,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 109 transitions. [2024-06-04 15:25:52,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4128787878787879 [2024-06-04 15:25:52,407 INFO L175 Difference]: Start difference. First operand has 68 places, 57 transitions, 385 flow. Second operand 8 states and 109 transitions. [2024-06-04 15:25:52,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 73 transitions, 585 flow [2024-06-04 15:25:52,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 73 transitions, 532 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-04 15:25:52,411 INFO L231 Difference]: Finished difference. Result has 71 places, 59 transitions, 387 flow [2024-06-04 15:25:52,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=387, PETRI_PLACES=71, PETRI_TRANSITIONS=59} [2024-06-04 15:25:52,411 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 39 predicate places. [2024-06-04 15:25:52,412 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 59 transitions, 387 flow [2024-06-04 15:25:52,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:25:52,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:52,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:52,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-04 15:25:52,412 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)] === [2024-06-04 15:25:52,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:52,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1642469928, now seen corresponding path program 2 times [2024-06-04 15:25:52,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:52,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42147669] [2024-06-04 15:25:52,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:52,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:52,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:52,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:52,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:52,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42147669] [2024-06-04 15:25:52,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42147669] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:52,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:52,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:25:52,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328473539] [2024-06-04 15:25:52,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:52,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:25:52,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:52,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:25:52,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:25:53,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:25:53,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 59 transitions, 387 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:25:53,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:53,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:25:53,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:53,231 INFO L124 PetriNetUnfolderBase]: 207/400 cut-off events. [2024-06-04 15:25:53,232 INFO L125 PetriNetUnfolderBase]: For 3408/3408 co-relation queries the response was YES. [2024-06-04 15:25:53,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1784 conditions, 400 events. 207/400 cut-off events. For 3408/3408 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1722 event pairs, 46 based on Foata normal form. 2/396 useless extension candidates. Maximal degree in co-relation 1750. Up to 279 conditions per place. [2024-06-04 15:25:53,234 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 48 selfloop transitions, 26 changer transitions 0/78 dead transitions. [2024-06-04 15:25:53,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 78 transitions, 649 flow [2024-06-04 15:25:53,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:25:53,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:25:53,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 112 transitions. [2024-06-04 15:25:53,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-04 15:25:53,235 INFO L175 Difference]: Start difference. First operand has 71 places, 59 transitions, 387 flow. Second operand 8 states and 112 transitions. [2024-06-04 15:25:53,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 78 transitions, 649 flow [2024-06-04 15:25:53,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 78 transitions, 612 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-04 15:25:53,239 INFO L231 Difference]: Finished difference. Result has 74 places, 64 transitions, 466 flow [2024-06-04 15:25:53,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=466, PETRI_PLACES=74, PETRI_TRANSITIONS=64} [2024-06-04 15:25:53,240 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 42 predicate places. [2024-06-04 15:25:53,240 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 64 transitions, 466 flow [2024-06-04 15:25:53,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:25:53,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:53,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:53,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-04 15:25:53,240 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)] === [2024-06-04 15:25:53,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:53,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1642766598, now seen corresponding path program 3 times [2024-06-04 15:25:53,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:53,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077946142] [2024-06-04 15:25:53,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:53,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:53,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:53,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:53,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:53,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077946142] [2024-06-04 15:25:53,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077946142] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:53,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:53,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:25:53,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951874185] [2024-06-04 15:25:53,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:53,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:25:53,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:53,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:25:53,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:25:53,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:25:53,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 64 transitions, 466 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:25:53,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:53,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:25:53,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:53,999 INFO L124 PetriNetUnfolderBase]: 213/410 cut-off events. [2024-06-04 15:25:54,000 INFO L125 PetriNetUnfolderBase]: For 3976/3976 co-relation queries the response was YES. [2024-06-04 15:25:54,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1949 conditions, 410 events. 213/410 cut-off events. For 3976/3976 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1774 event pairs, 46 based on Foata normal form. 2/406 useless extension candidates. Maximal degree in co-relation 1913. Up to 285 conditions per place. [2024-06-04 15:25:54,002 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 50 selfloop transitions, 26 changer transitions 0/80 dead transitions. [2024-06-04 15:25:54,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 80 transitions, 716 flow [2024-06-04 15:25:54,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:25:54,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:25:54,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 113 transitions. [2024-06-04 15:25:54,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42803030303030304 [2024-06-04 15:25:54,004 INFO L175 Difference]: Start difference. First operand has 74 places, 64 transitions, 466 flow. Second operand 8 states and 113 transitions. [2024-06-04 15:25:54,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 80 transitions, 716 flow [2024-06-04 15:25:54,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 80 transitions, 670 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-04 15:25:54,008 INFO L231 Difference]: Finished difference. Result has 78 places, 66 transitions, 503 flow [2024-06-04 15:25:54,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=503, PETRI_PLACES=78, PETRI_TRANSITIONS=66} [2024-06-04 15:25:54,009 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 46 predicate places. [2024-06-04 15:25:54,009 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 66 transitions, 503 flow [2024-06-04 15:25:54,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:25:54,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:54,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:54,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-04 15:25:54,010 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)] === [2024-06-04 15:25:54,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:54,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1651040808, now seen corresponding path program 4 times [2024-06-04 15:25:54,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:54,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927436178] [2024-06-04 15:25:54,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:54,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:54,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:54,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:54,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:54,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927436178] [2024-06-04 15:25:54,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927436178] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:54,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:54,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:25:54,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798913232] [2024-06-04 15:25:54,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:54,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:25:54,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:54,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:25:54,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:25:54,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:25:54,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 66 transitions, 503 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:25:54,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:54,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:25:54,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:54,797 INFO L124 PetriNetUnfolderBase]: 209/404 cut-off events. [2024-06-04 15:25:54,798 INFO L125 PetriNetUnfolderBase]: For 4161/4161 co-relation queries the response was YES. [2024-06-04 15:25:54,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1958 conditions, 404 events. 209/404 cut-off events. For 4161/4161 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1745 event pairs, 52 based on Foata normal form. 2/400 useless extension candidates. Maximal degree in co-relation 1920. Up to 282 conditions per place. [2024-06-04 15:25:54,800 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 50 selfloop transitions, 26 changer transitions 0/80 dead transitions. [2024-06-04 15:25:54,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 80 transitions, 706 flow [2024-06-04 15:25:54,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:25:54,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:25:54,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 113 transitions. [2024-06-04 15:25:54,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42803030303030304 [2024-06-04 15:25:54,801 INFO L175 Difference]: Start difference. First operand has 78 places, 66 transitions, 503 flow. Second operand 8 states and 113 transitions. [2024-06-04 15:25:54,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 80 transitions, 706 flow [2024-06-04 15:25:54,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 80 transitions, 643 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-04 15:25:54,807 INFO L231 Difference]: Finished difference. Result has 81 places, 67 transitions, 506 flow [2024-06-04 15:25:54,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=506, PETRI_PLACES=81, PETRI_TRANSITIONS=67} [2024-06-04 15:25:54,807 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 49 predicate places. [2024-06-04 15:25:54,807 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 67 transitions, 506 flow [2024-06-04 15:25:54,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:25:54,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:54,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:54,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-04 15:25:54,808 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)] === [2024-06-04 15:25:54,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:54,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1642459016, now seen corresponding path program 1 times [2024-06-04 15:25:54,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:54,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021327888] [2024-06-04 15:25:54,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:54,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:54,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:55,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:55,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:55,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021327888] [2024-06-04 15:25:55,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021327888] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:55,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:55,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:25:55,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829446915] [2024-06-04 15:25:55,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:55,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:25:55,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:55,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:25:55,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:25:55,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:25:55,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 67 transitions, 506 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:25:55,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:55,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:25:55,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:55,899 INFO L124 PetriNetUnfolderBase]: 207/404 cut-off events. [2024-06-04 15:25:55,900 INFO L125 PetriNetUnfolderBase]: For 4284/4286 co-relation queries the response was YES. [2024-06-04 15:25:55,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1953 conditions, 404 events. 207/404 cut-off events. For 4284/4286 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1762 event pairs, 55 based on Foata normal form. 1/403 useless extension candidates. Maximal degree in co-relation 1914. Up to 350 conditions per place. [2024-06-04 15:25:55,903 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 60 selfloop transitions, 14 changer transitions 0/78 dead transitions. [2024-06-04 15:25:55,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 78 transitions, 688 flow [2024-06-04 15:25:55,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:25:55,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:25:55,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-04 15:25:55,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3838383838383838 [2024-06-04 15:25:55,904 INFO L175 Difference]: Start difference. First operand has 81 places, 67 transitions, 506 flow. Second operand 9 states and 114 transitions. [2024-06-04 15:25:55,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 78 transitions, 688 flow [2024-06-04 15:25:55,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 78 transitions, 646 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-04 15:25:55,910 INFO L231 Difference]: Finished difference. Result has 85 places, 69 transitions, 513 flow [2024-06-04 15:25:55,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=513, PETRI_PLACES=85, PETRI_TRANSITIONS=69} [2024-06-04 15:25:55,911 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 53 predicate places. [2024-06-04 15:25:55,911 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 69 transitions, 513 flow [2024-06-04 15:25:55,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:25:55,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:55,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:55,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-04 15:25:55,912 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)] === [2024-06-04 15:25:55,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:55,912 INFO L85 PathProgramCache]: Analyzing trace with hash -815941689, now seen corresponding path program 1 times [2024-06-04 15:25:55,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:55,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446404351] [2024-06-04 15:25:55,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:55,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:55,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:56,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:56,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:56,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446404351] [2024-06-04 15:25:56,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446404351] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:56,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:56,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:25:56,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678771760] [2024-06-04 15:25:56,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:56,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:25:56,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:56,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:25:56,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:25:56,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:25:56,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 69 transitions, 513 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:25:56,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:56,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:25:56,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:56,948 INFO L124 PetriNetUnfolderBase]: 205/402 cut-off events. [2024-06-04 15:25:56,948 INFO L125 PetriNetUnfolderBase]: For 4395/4395 co-relation queries the response was YES. [2024-06-04 15:25:56,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1936 conditions, 402 events. 205/402 cut-off events. For 4395/4395 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1732 event pairs, 51 based on Foata normal form. 1/401 useless extension candidates. Maximal degree in co-relation 1896. Up to 322 conditions per place. [2024-06-04 15:25:56,951 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 60 selfloop transitions, 20 changer transitions 0/84 dead transitions. [2024-06-04 15:25:56,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 84 transitions, 737 flow [2024-06-04 15:25:56,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:25:56,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:25:56,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 109 transitions. [2024-06-04 15:25:56,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4128787878787879 [2024-06-04 15:25:56,955 INFO L175 Difference]: Start difference. First operand has 85 places, 69 transitions, 513 flow. Second operand 8 states and 109 transitions. [2024-06-04 15:25:56,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 84 transitions, 737 flow [2024-06-04 15:25:56,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 84 transitions, 655 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-04 15:25:56,959 INFO L231 Difference]: Finished difference. Result has 83 places, 71 transitions, 507 flow [2024-06-04 15:25:56,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=507, PETRI_PLACES=83, PETRI_TRANSITIONS=71} [2024-06-04 15:25:56,960 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 51 predicate places. [2024-06-04 15:25:56,960 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 71 transitions, 507 flow [2024-06-04 15:25:56,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:25:56,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:56,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:56,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-04 15:25:56,961 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)] === [2024-06-04 15:25:56,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:56,961 INFO L85 PathProgramCache]: Analyzing trace with hash 687721061, now seen corresponding path program 1 times [2024-06-04 15:25:56,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:56,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575719291] [2024-06-04 15:25:56,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:56,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:56,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:57,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:57,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:57,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575719291] [2024-06-04 15:25:57,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575719291] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:57,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:57,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:25:57,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517302133] [2024-06-04 15:25:57,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:57,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:25:57,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:57,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:25:57,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:25:57,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:25:57,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 71 transitions, 507 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:25:57,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:57,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:25:57,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:57,804 INFO L124 PetriNetUnfolderBase]: 211/412 cut-off events. [2024-06-04 15:25:57,804 INFO L125 PetriNetUnfolderBase]: For 5000/5000 co-relation queries the response was YES. [2024-06-04 15:25:57,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1991 conditions, 412 events. 211/412 cut-off events. For 5000/5000 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1788 event pairs, 46 based on Foata normal form. 2/412 useless extension candidates. Maximal degree in co-relation 1951. Up to 329 conditions per place. [2024-06-04 15:25:57,807 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 69 selfloop transitions, 16 changer transitions 0/89 dead transitions. [2024-06-04 15:25:57,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 89 transitions, 751 flow [2024-06-04 15:25:57,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:25:57,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:25:57,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 121 transitions. [2024-06-04 15:25:57,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2024-06-04 15:25:57,816 INFO L175 Difference]: Start difference. First operand has 83 places, 71 transitions, 507 flow. Second operand 9 states and 121 transitions. [2024-06-04 15:25:57,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 89 transitions, 751 flow [2024-06-04 15:25:57,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 89 transitions, 693 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-04 15:25:57,821 INFO L231 Difference]: Finished difference. Result has 86 places, 73 transitions, 514 flow [2024-06-04 15:25:57,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=449, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=514, PETRI_PLACES=86, PETRI_TRANSITIONS=73} [2024-06-04 15:25:57,822 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 54 predicate places. [2024-06-04 15:25:57,822 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 73 transitions, 514 flow [2024-06-04 15:25:57,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:25:57,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:57,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:57,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-04 15:25:57,822 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)] === [2024-06-04 15:25:57,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:57,823 INFO L85 PathProgramCache]: Analyzing trace with hash 614112741, now seen corresponding path program 2 times [2024-06-04 15:25:57,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:57,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661578726] [2024-06-04 15:25:57,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:57,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:57,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:58,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:58,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:58,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661578726] [2024-06-04 15:25:58,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661578726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:58,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:58,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:25:58,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841512447] [2024-06-04 15:25:58,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:58,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:25:58,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:58,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:25:58,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:25:58,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:25:58,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 73 transitions, 514 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:25:58,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:58,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:25:58,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:58,790 INFO L124 PetriNetUnfolderBase]: 217/423 cut-off events. [2024-06-04 15:25:58,790 INFO L125 PetriNetUnfolderBase]: For 5603/5605 co-relation queries the response was YES. [2024-06-04 15:25:58,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2078 conditions, 423 events. 217/423 cut-off events. For 5603/5605 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1854 event pairs, 55 based on Foata normal form. 2/423 useless extension candidates. Maximal degree in co-relation 2037. Up to 364 conditions per place. [2024-06-04 15:25:58,793 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 67 selfloop transitions, 14 changer transitions 0/85 dead transitions. [2024-06-04 15:25:58,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 85 transitions, 730 flow [2024-06-04 15:25:58,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:25:58,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:25:58,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-04 15:25:58,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3872053872053872 [2024-06-04 15:25:58,795 INFO L175 Difference]: Start difference. First operand has 86 places, 73 transitions, 514 flow. Second operand 9 states and 115 transitions. [2024-06-04 15:25:58,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 85 transitions, 730 flow [2024-06-04 15:25:58,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 85 transitions, 681 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-04 15:25:58,801 INFO L231 Difference]: Finished difference. Result has 88 places, 75 transitions, 530 flow [2024-06-04 15:25:58,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=530, PETRI_PLACES=88, PETRI_TRANSITIONS=75} [2024-06-04 15:25:58,801 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 56 predicate places. [2024-06-04 15:25:58,801 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 75 transitions, 530 flow [2024-06-04 15:25:58,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:25:58,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:58,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:58,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-04 15:25:58,802 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)] === [2024-06-04 15:25:58,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:58,802 INFO L85 PathProgramCache]: Analyzing trace with hash 623040741, now seen corresponding path program 3 times [2024-06-04 15:25:58,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:58,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709756349] [2024-06-04 15:25:58,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:58,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:58,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:25:59,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:25:59,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:25:59,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709756349] [2024-06-04 15:25:59,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709756349] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:25:59,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:25:59,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:25:59,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207361474] [2024-06-04 15:25:59,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:25:59,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:25:59,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:25:59,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:25:59,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:25:59,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:25:59,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 75 transitions, 530 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:25:59,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:25:59,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:25:59,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:25:59,633 INFO L124 PetriNetUnfolderBase]: 228/440 cut-off events. [2024-06-04 15:25:59,634 INFO L125 PetriNetUnfolderBase]: For 6688/6688 co-relation queries the response was YES. [2024-06-04 15:25:59,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2238 conditions, 440 events. 228/440 cut-off events. For 6688/6688 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1948 event pairs, 43 based on Foata normal form. 2/436 useless extension candidates. Maximal degree in co-relation 2196. Up to 274 conditions per place. [2024-06-04 15:25:59,637 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 56 selfloop transitions, 35 changer transitions 0/95 dead transitions. [2024-06-04 15:25:59,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 95 transitions, 866 flow [2024-06-04 15:25:59,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:25:59,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:25:59,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 126 transitions. [2024-06-04 15:25:59,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-04 15:25:59,639 INFO L175 Difference]: Start difference. First operand has 88 places, 75 transitions, 530 flow. Second operand 9 states and 126 transitions. [2024-06-04 15:25:59,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 95 transitions, 866 flow [2024-06-04 15:25:59,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 95 transitions, 817 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-04 15:25:59,645 INFO L231 Difference]: Finished difference. Result has 90 places, 79 transitions, 624 flow [2024-06-04 15:25:59,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=624, PETRI_PLACES=90, PETRI_TRANSITIONS=79} [2024-06-04 15:25:59,646 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 58 predicate places. [2024-06-04 15:25:59,646 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 79 transitions, 624 flow [2024-06-04 15:25:59,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:25:59,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:25:59,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:25:59,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-04 15:25:59,646 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)] === [2024-06-04 15:25:59,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:25:59,646 INFO L85 PathProgramCache]: Analyzing trace with hash 613843971, now seen corresponding path program 4 times [2024-06-04 15:25:59,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:25:59,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553690601] [2024-06-04 15:25:59,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:25:59,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:25:59,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:00,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:00,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:00,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553690601] [2024-06-04 15:26:00,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553690601] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:00,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:00,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:26:00,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943325793] [2024-06-04 15:26:00,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:00,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:26:00,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:00,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:26:00,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:26:00,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:26:00,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 79 transitions, 624 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:00,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:00,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:26:00,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:00,542 INFO L124 PetriNetUnfolderBase]: 234/450 cut-off events. [2024-06-04 15:26:00,543 INFO L125 PetriNetUnfolderBase]: For 7522/7522 co-relation queries the response was YES. [2024-06-04 15:26:00,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2395 conditions, 450 events. 234/450 cut-off events. For 7522/7522 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2011 event pairs, 45 based on Foata normal form. 2/446 useless extension candidates. Maximal degree in co-relation 2352. Up to 280 conditions per place. [2024-06-04 15:26:00,562 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 58 selfloop transitions, 35 changer transitions 0/97 dead transitions. [2024-06-04 15:26:00,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 97 transitions, 938 flow [2024-06-04 15:26:00,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:26:00,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:26:00,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 127 transitions. [2024-06-04 15:26:00,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4276094276094276 [2024-06-04 15:26:00,563 INFO L175 Difference]: Start difference. First operand has 90 places, 79 transitions, 624 flow. Second operand 9 states and 127 transitions. [2024-06-04 15:26:00,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 97 transitions, 938 flow [2024-06-04 15:26:00,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 97 transitions, 874 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-04 15:26:00,570 INFO L231 Difference]: Finished difference. Result has 94 places, 81 transitions, 671 flow [2024-06-04 15:26:00,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=671, PETRI_PLACES=94, PETRI_TRANSITIONS=81} [2024-06-04 15:26:00,570 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 62 predicate places. [2024-06-04 15:26:00,570 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 81 transitions, 671 flow [2024-06-04 15:26:00,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:00,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:00,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:00,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-04 15:26:00,571 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)] === [2024-06-04 15:26:00,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:00,571 INFO L85 PathProgramCache]: Analyzing trace with hash 357343461, now seen corresponding path program 5 times [2024-06-04 15:26:00,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:00,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658210759] [2024-06-04 15:26:00,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:00,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:00,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:01,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:01,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:01,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658210759] [2024-06-04 15:26:01,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658210759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:01,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:01,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:26:01,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92259567] [2024-06-04 15:26:01,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:01,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:26:01,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:01,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:26:01,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:26:01,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:26:01,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 81 transitions, 671 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:01,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:01,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:26:01,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:01,400 INFO L124 PetriNetUnfolderBase]: 230/444 cut-off events. [2024-06-04 15:26:01,400 INFO L125 PetriNetUnfolderBase]: For 7518/7518 co-relation queries the response was YES. [2024-06-04 15:26:01,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2382 conditions, 444 events. 230/444 cut-off events. For 7518/7518 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1978 event pairs, 55 based on Foata normal form. 2/440 useless extension candidates. Maximal degree in co-relation 2337. Up to 277 conditions per place. [2024-06-04 15:26:01,403 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 58 selfloop transitions, 34 changer transitions 0/96 dead transitions. [2024-06-04 15:26:01,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 96 transitions, 903 flow [2024-06-04 15:26:01,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:26:01,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:26:01,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 127 transitions. [2024-06-04 15:26:01,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4276094276094276 [2024-06-04 15:26:01,405 INFO L175 Difference]: Start difference. First operand has 94 places, 81 transitions, 671 flow. Second operand 9 states and 127 transitions. [2024-06-04 15:26:01,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 96 transitions, 903 flow [2024-06-04 15:26:01,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 96 transitions, 809 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-04 15:26:01,418 INFO L231 Difference]: Finished difference. Result has 97 places, 81 transitions, 650 flow [2024-06-04 15:26:01,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=577, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=650, PETRI_PLACES=97, PETRI_TRANSITIONS=81} [2024-06-04 15:26:01,418 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 65 predicate places. [2024-06-04 15:26:01,418 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 81 transitions, 650 flow [2024-06-04 15:26:01,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:01,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:01,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:01,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-04 15:26:01,420 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)] === [2024-06-04 15:26:01,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:01,420 INFO L85 PathProgramCache]: Analyzing trace with hash 623379075, now seen corresponding path program 1 times [2024-06-04 15:26:01,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:01,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121609616] [2024-06-04 15:26:01,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:01,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:01,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:02,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:02,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:02,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121609616] [2024-06-04 15:26:02,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121609616] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:02,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:02,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:26:02,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793119662] [2024-06-04 15:26:02,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:02,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:26:02,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:02,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:26:02,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:26:02,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:26:02,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 81 transitions, 650 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:02,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:02,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:26:02,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:02,572 INFO L124 PetriNetUnfolderBase]: 227/442 cut-off events. [2024-06-04 15:26:02,572 INFO L125 PetriNetUnfolderBase]: For 7364/7366 co-relation queries the response was YES. [2024-06-04 15:26:02,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2310 conditions, 442 events. 227/442 cut-off events. For 7364/7366 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1954 event pairs, 60 based on Foata normal form. 2/442 useless extension candidates. Maximal degree in co-relation 2264. Up to 378 conditions per place. [2024-06-04 15:26:02,575 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 73 selfloop transitions, 15 changer transitions 0/92 dead transitions. [2024-06-04 15:26:02,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 92 transitions, 852 flow [2024-06-04 15:26:02,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:26:02,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:26:02,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-04 15:26:02,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37575757575757573 [2024-06-04 15:26:02,576 INFO L175 Difference]: Start difference. First operand has 97 places, 81 transitions, 650 flow. Second operand 10 states and 124 transitions. [2024-06-04 15:26:02,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 92 transitions, 852 flow [2024-06-04 15:26:02,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 92 transitions, 746 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-04 15:26:02,584 INFO L231 Difference]: Finished difference. Result has 98 places, 81 transitions, 578 flow [2024-06-04 15:26:02,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=578, PETRI_PLACES=98, PETRI_TRANSITIONS=81} [2024-06-04 15:26:02,584 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 66 predicate places. [2024-06-04 15:26:02,585 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 81 transitions, 578 flow [2024-06-04 15:26:02,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:02,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:02,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:02,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-04 15:26:02,585 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)] === [2024-06-04 15:26:02,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:02,586 INFO L85 PathProgramCache]: Analyzing trace with hash -2130127641, now seen corresponding path program 1 times [2024-06-04 15:26:02,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:02,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661691035] [2024-06-04 15:26:02,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:02,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:02,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:03,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:03,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:03,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661691035] [2024-06-04 15:26:03,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661691035] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:03,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:03,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:26:03,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752020919] [2024-06-04 15:26:03,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:03,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:26:03,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:03,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:26:03,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:26:03,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-04 15:26:03,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 81 transitions, 578 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:03,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:03,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-04 15:26:03,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:03,495 INFO L124 PetriNetUnfolderBase]: 220/442 cut-off events. [2024-06-04 15:26:03,496 INFO L125 PetriNetUnfolderBase]: For 8397/8399 co-relation queries the response was YES. [2024-06-04 15:26:03,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2231 conditions, 442 events. 220/442 cut-off events. For 8397/8399 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2022 event pairs, 52 based on Foata normal form. 4/440 useless extension candidates. Maximal degree in co-relation 2184. Up to 337 conditions per place. [2024-06-04 15:26:03,499 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 71 selfloop transitions, 18 changer transitions 0/99 dead transitions. [2024-06-04 15:26:03,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 99 transitions, 835 flow [2024-06-04 15:26:03,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:26:03,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:26:03,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 118 transitions. [2024-06-04 15:26:03,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44696969696969696 [2024-06-04 15:26:03,500 INFO L175 Difference]: Start difference. First operand has 98 places, 81 transitions, 578 flow. Second operand 8 states and 118 transitions. [2024-06-04 15:26:03,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 99 transitions, 835 flow [2024-06-04 15:26:03,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 99 transitions, 795 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-04 15:26:03,508 INFO L231 Difference]: Finished difference. Result has 102 places, 87 transitions, 655 flow [2024-06-04 15:26:03,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=655, PETRI_PLACES=102, PETRI_TRANSITIONS=87} [2024-06-04 15:26:03,508 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 70 predicate places. [2024-06-04 15:26:03,508 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 87 transitions, 655 flow [2024-06-04 15:26:03,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:03,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:03,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:03,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-04 15:26:03,509 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)] === [2024-06-04 15:26:03,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:03,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1846340377, now seen corresponding path program 2 times [2024-06-04 15:26:03,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:03,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084549210] [2024-06-04 15:26:03,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:03,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:03,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:04,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:04,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:04,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084549210] [2024-06-04 15:26:04,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084549210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:04,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:04,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:26:04,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14616516] [2024-06-04 15:26:04,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:04,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:26:04,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:04,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:26:04,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:26:04,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-04 15:26:04,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 87 transitions, 655 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:04,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:04,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-04 15:26:04,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:04,481 INFO L124 PetriNetUnfolderBase]: 224/452 cut-off events. [2024-06-04 15:26:04,481 INFO L125 PetriNetUnfolderBase]: For 9186/9188 co-relation queries the response was YES. [2024-06-04 15:26:04,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2339 conditions, 452 events. 224/452 cut-off events. For 9186/9188 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2058 event pairs, 48 based on Foata normal form. 4/454 useless extension candidates. Maximal degree in co-relation 2286. Up to 365 conditions per place. [2024-06-04 15:26:04,484 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 76 selfloop transitions, 15 changer transitions 0/101 dead transitions. [2024-06-04 15:26:04,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 101 transitions, 893 flow [2024-06-04 15:26:04,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:26:04,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:26:04,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 113 transitions. [2024-06-04 15:26:04,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42803030303030304 [2024-06-04 15:26:04,486 INFO L175 Difference]: Start difference. First operand has 102 places, 87 transitions, 655 flow. Second operand 8 states and 113 transitions. [2024-06-04 15:26:04,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 101 transitions, 893 flow [2024-06-04 15:26:04,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 101 transitions, 872 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-06-04 15:26:04,496 INFO L231 Difference]: Finished difference. Result has 110 places, 90 transitions, 698 flow [2024-06-04 15:26:04,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=634, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=698, PETRI_PLACES=110, PETRI_TRANSITIONS=90} [2024-06-04 15:26:04,496 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 78 predicate places. [2024-06-04 15:26:04,497 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 90 transitions, 698 flow [2024-06-04 15:26:04,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:04,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:04,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:04,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-04 15:26:04,497 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)] === [2024-06-04 15:26:04,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:04,498 INFO L85 PathProgramCache]: Analyzing trace with hash 475607383, now seen corresponding path program 3 times [2024-06-04 15:26:04,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:04,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369393005] [2024-06-04 15:26:04,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:04,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:04,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:05,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:05,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:05,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369393005] [2024-06-04 15:26:05,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369393005] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:05,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:05,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:26:05,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320232980] [2024-06-04 15:26:05,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:05,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:26:05,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:05,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:26:05,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:26:05,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-04 15:26:05,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 90 transitions, 698 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:05,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:05,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-04 15:26:05,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:05,604 INFO L124 PetriNetUnfolderBase]: 231/461 cut-off events. [2024-06-04 15:26:05,604 INFO L125 PetriNetUnfolderBase]: For 9734/9735 co-relation queries the response was YES. [2024-06-04 15:26:05,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2458 conditions, 461 events. 231/461 cut-off events. For 9734/9735 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2135 event pairs, 41 based on Foata normal form. 3/458 useless extension candidates. Maximal degree in co-relation 2401. Up to 367 conditions per place. [2024-06-04 15:26:05,607 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 74 selfloop transitions, 19 changer transitions 0/103 dead transitions. [2024-06-04 15:26:05,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 103 transitions, 938 flow [2024-06-04 15:26:05,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:26:05,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:26:05,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 126 transitions. [2024-06-04 15:26:05,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-04 15:26:05,609 INFO L175 Difference]: Start difference. First operand has 110 places, 90 transitions, 698 flow. Second operand 9 states and 126 transitions. [2024-06-04 15:26:05,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 103 transitions, 938 flow [2024-06-04 15:26:05,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 103 transitions, 900 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-04 15:26:05,621 INFO L231 Difference]: Finished difference. Result has 115 places, 93 transitions, 739 flow [2024-06-04 15:26:05,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=660, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=739, PETRI_PLACES=115, PETRI_TRANSITIONS=93} [2024-06-04 15:26:05,621 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 83 predicate places. [2024-06-04 15:26:05,621 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 93 transitions, 739 flow [2024-06-04 15:26:05,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:05,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:05,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:05,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-04 15:26:05,622 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)] === [2024-06-04 15:26:05,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:05,623 INFO L85 PathProgramCache]: Analyzing trace with hash -2127265721, now seen corresponding path program 1 times [2024-06-04 15:26:05,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:05,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782488995] [2024-06-04 15:26:05,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:05,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:05,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:06,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:06,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:06,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782488995] [2024-06-04 15:26:06,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782488995] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:06,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:06,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:26:06,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669268695] [2024-06-04 15:26:06,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:06,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:26:06,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:06,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:26:06,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:26:06,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:26:06,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 93 transitions, 739 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:06,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:06,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:26:06,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:06,744 INFO L124 PetriNetUnfolderBase]: 245/478 cut-off events. [2024-06-04 15:26:06,744 INFO L125 PetriNetUnfolderBase]: For 9036/9036 co-relation queries the response was YES. [2024-06-04 15:26:06,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2526 conditions, 478 events. 245/478 cut-off events. For 9036/9036 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2206 event pairs, 40 based on Foata normal form. 1/477 useless extension candidates. Maximal degree in co-relation 2467. Up to 390 conditions per place. [2024-06-04 15:26:06,747 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 77 selfloop transitions, 27 changer transitions 0/108 dead transitions. [2024-06-04 15:26:06,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 108 transitions, 1021 flow [2024-06-04 15:26:06,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:26:06,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:26:06,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-04 15:26:06,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40404040404040403 [2024-06-04 15:26:06,750 INFO L175 Difference]: Start difference. First operand has 115 places, 93 transitions, 739 flow. Second operand 9 states and 120 transitions. [2024-06-04 15:26:06,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 108 transitions, 1021 flow [2024-06-04 15:26:06,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 108 transitions, 968 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-04 15:26:06,762 INFO L231 Difference]: Finished difference. Result has 118 places, 95 transitions, 783 flow [2024-06-04 15:26:06,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=783, PETRI_PLACES=118, PETRI_TRANSITIONS=95} [2024-06-04 15:26:06,763 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 86 predicate places. [2024-06-04 15:26:06,763 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 95 transitions, 783 flow [2024-06-04 15:26:06,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:06,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:06,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:06,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-04 15:26:06,764 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)] === [2024-06-04 15:26:06,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:06,764 INFO L85 PathProgramCache]: Analyzing trace with hash -155482601, now seen corresponding path program 1 times [2024-06-04 15:26:06,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:06,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896698404] [2024-06-04 15:26:06,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:06,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:06,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:07,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:07,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:07,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896698404] [2024-06-04 15:26:07,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896698404] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:07,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:07,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:26:07,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723226402] [2024-06-04 15:26:07,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:07,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:26:07,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:07,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:26:07,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:26:07,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:26:07,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 95 transitions, 783 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:07,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:07,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:26:07,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:07,846 INFO L124 PetriNetUnfolderBase]: 251/492 cut-off events. [2024-06-04 15:26:07,847 INFO L125 PetriNetUnfolderBase]: For 10156/10156 co-relation queries the response was YES. [2024-06-04 15:26:07,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2619 conditions, 492 events. 251/492 cut-off events. For 10156/10156 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2282 event pairs, 32 based on Foata normal form. 2/492 useless extension candidates. Maximal degree in co-relation 2560. Up to 397 conditions per place. [2024-06-04 15:26:07,850 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 87 selfloop transitions, 22 changer transitions 0/113 dead transitions. [2024-06-04 15:26:07,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 113 transitions, 1093 flow [2024-06-04 15:26:07,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:26:07,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:26:07,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-04 15:26:07,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403030303030303 [2024-06-04 15:26:07,853 INFO L175 Difference]: Start difference. First operand has 118 places, 95 transitions, 783 flow. Second operand 10 states and 133 transitions. [2024-06-04 15:26:07,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 113 transitions, 1093 flow [2024-06-04 15:26:07,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 113 transitions, 1014 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-04 15:26:07,866 INFO L231 Difference]: Finished difference. Result has 121 places, 98 transitions, 798 flow [2024-06-04 15:26:07,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=704, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=798, PETRI_PLACES=121, PETRI_TRANSITIONS=98} [2024-06-04 15:26:07,867 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 89 predicate places. [2024-06-04 15:26:07,867 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 98 transitions, 798 flow [2024-06-04 15:26:07,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:07,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:07,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:07,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-04 15:26:07,867 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)] === [2024-06-04 15:26:07,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:07,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1813933737, now seen corresponding path program 4 times [2024-06-04 15:26:07,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:07,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858128099] [2024-06-04 15:26:07,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:07,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:07,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:08,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:08,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:08,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858128099] [2024-06-04 15:26:08,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858128099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:08,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:08,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:26:08,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977711924] [2024-06-04 15:26:08,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:08,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:26:08,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:08,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:26:08,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:26:08,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-04 15:26:08,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 98 transitions, 798 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:08,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:08,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-04 15:26:08,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:08,829 INFO L124 PetriNetUnfolderBase]: 239/482 cut-off events. [2024-06-04 15:26:08,830 INFO L125 PetriNetUnfolderBase]: For 11797/11800 co-relation queries the response was YES. [2024-06-04 15:26:08,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2621 conditions, 482 events. 239/482 cut-off events. For 11797/11800 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2255 event pairs, 47 based on Foata normal form. 5/481 useless extension candidates. Maximal degree in co-relation 2561. Up to 384 conditions per place. [2024-06-04 15:26:08,833 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 82 selfloop transitions, 18 changer transitions 0/110 dead transitions. [2024-06-04 15:26:08,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 110 transitions, 1056 flow [2024-06-04 15:26:08,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:26:08,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:26:08,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 113 transitions. [2024-06-04 15:26:08,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42803030303030304 [2024-06-04 15:26:08,834 INFO L175 Difference]: Start difference. First operand has 121 places, 98 transitions, 798 flow. Second operand 8 states and 113 transitions. [2024-06-04 15:26:08,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 110 transitions, 1056 flow [2024-06-04 15:26:08,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 110 transitions, 984 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-04 15:26:08,847 INFO L231 Difference]: Finished difference. Result has 122 places, 101 transitions, 803 flow [2024-06-04 15:26:08,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=726, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=803, PETRI_PLACES=122, PETRI_TRANSITIONS=101} [2024-06-04 15:26:08,848 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 90 predicate places. [2024-06-04 15:26:08,848 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 101 transitions, 803 flow [2024-06-04 15:26:08,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:08,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:08,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:08,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-04 15:26:08,849 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)] === [2024-06-04 15:26:08,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:08,849 INFO L85 PathProgramCache]: Analyzing trace with hash 2144870295, now seen corresponding path program 2 times [2024-06-04 15:26:08,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:08,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618196623] [2024-06-04 15:26:08,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:08,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:08,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:09,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:09,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:09,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618196623] [2024-06-04 15:26:09,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618196623] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:09,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:09,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:26:09,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443981109] [2024-06-04 15:26:09,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:09,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:26:09,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:09,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:26:09,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:26:09,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:26:09,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 101 transitions, 803 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:09,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:09,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:26:09,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:10,171 INFO L124 PetriNetUnfolderBase]: 261/511 cut-off events. [2024-06-04 15:26:10,172 INFO L125 PetriNetUnfolderBase]: For 11917/11919 co-relation queries the response was YES. [2024-06-04 15:26:10,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2811 conditions, 511 events. 261/511 cut-off events. For 11917/11919 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2370 event pairs, 41 based on Foata normal form. 2/511 useless extension candidates. Maximal degree in co-relation 2749. Up to 435 conditions per place. [2024-06-04 15:26:10,175 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 91 selfloop transitions, 20 changer transitions 0/115 dead transitions. [2024-06-04 15:26:10,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 115 transitions, 1103 flow [2024-06-04 15:26:10,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:26:10,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:26:10,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-04 15:26:10,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38016528925619836 [2024-06-04 15:26:10,177 INFO L175 Difference]: Start difference. First operand has 122 places, 101 transitions, 803 flow. Second operand 11 states and 138 transitions. [2024-06-04 15:26:10,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 115 transitions, 1103 flow [2024-06-04 15:26:10,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 115 transitions, 1051 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-04 15:26:10,192 INFO L231 Difference]: Finished difference. Result has 128 places, 104 transitions, 850 flow [2024-06-04 15:26:10,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=751, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=850, PETRI_PLACES=128, PETRI_TRANSITIONS=104} [2024-06-04 15:26:10,192 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 96 predicate places. [2024-06-04 15:26:10,192 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 104 transitions, 850 flow [2024-06-04 15:26:10,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:10,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:10,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:10,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-04 15:26:10,193 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)] === [2024-06-04 15:26:10,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:10,193 INFO L85 PathProgramCache]: Analyzing trace with hash -185809547, now seen corresponding path program 3 times [2024-06-04 15:26:10,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:10,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215794093] [2024-06-04 15:26:10,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:10,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:10,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:11,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:11,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:11,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215794093] [2024-06-04 15:26:11,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215794093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:11,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:11,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:26:11,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677938130] [2024-06-04 15:26:11,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:11,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:26:11,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:11,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:26:11,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:26:11,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:26:11,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 104 transitions, 850 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:11,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:11,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:26:11,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:11,376 INFO L124 PetriNetUnfolderBase]: 267/518 cut-off events. [2024-06-04 15:26:11,376 INFO L125 PetriNetUnfolderBase]: For 12780/12780 co-relation queries the response was YES. [2024-06-04 15:26:11,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2942 conditions, 518 events. 267/518 cut-off events. For 12780/12780 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2421 event pairs, 45 based on Foata normal form. 2/514 useless extension candidates. Maximal degree in co-relation 2879. Up to 341 conditions per place. [2024-06-04 15:26:11,379 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 79 selfloop transitions, 39 changer transitions 0/122 dead transitions. [2024-06-04 15:26:11,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 122 transitions, 1228 flow [2024-06-04 15:26:11,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:26:11,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:26:11,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 139 transitions. [2024-06-04 15:26:11,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4212121212121212 [2024-06-04 15:26:11,397 INFO L175 Difference]: Start difference. First operand has 128 places, 104 transitions, 850 flow. Second operand 10 states and 139 transitions. [2024-06-04 15:26:11,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 122 transitions, 1228 flow [2024-06-04 15:26:11,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 122 transitions, 1153 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-04 15:26:11,413 INFO L231 Difference]: Finished difference. Result has 129 places, 107 transitions, 917 flow [2024-06-04 15:26:11,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=775, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=917, PETRI_PLACES=129, PETRI_TRANSITIONS=107} [2024-06-04 15:26:11,413 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 97 predicate places. [2024-06-04 15:26:11,413 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 107 transitions, 917 flow [2024-06-04 15:26:11,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:11,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:11,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:11,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-04 15:26:11,414 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)] === [2024-06-04 15:26:11,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:11,414 INFO L85 PathProgramCache]: Analyzing trace with hash 936011833, now seen corresponding path program 4 times [2024-06-04 15:26:11,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:11,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873476938] [2024-06-04 15:26:11,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:11,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:11,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:12,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:12,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:12,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873476938] [2024-06-04 15:26:12,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873476938] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:12,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:12,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:26:12,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128164254] [2024-06-04 15:26:12,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:12,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:26:12,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:12,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:26:12,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:26:12,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:26:12,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 107 transitions, 917 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:12,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:12,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:26:12,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:12,689 INFO L124 PetriNetUnfolderBase]: 273/526 cut-off events. [2024-06-04 15:26:12,690 INFO L125 PetriNetUnfolderBase]: For 13855/13855 co-relation queries the response was YES. [2024-06-04 15:26:12,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3120 conditions, 526 events. 273/526 cut-off events. For 13855/13855 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2464 event pairs, 45 based on Foata normal form. 2/522 useless extension candidates. Maximal degree in co-relation 3056. Up to 351 conditions per place. [2024-06-04 15:26:12,692 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 79 selfloop transitions, 41 changer transitions 0/124 dead transitions. [2024-06-04 15:26:12,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 124 transitions, 1301 flow [2024-06-04 15:26:12,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:26:12,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:26:12,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-04 15:26:12,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41818181818181815 [2024-06-04 15:26:12,694 INFO L175 Difference]: Start difference. First operand has 129 places, 107 transitions, 917 flow. Second operand 10 states and 138 transitions. [2024-06-04 15:26:12,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 124 transitions, 1301 flow [2024-06-04 15:26:12,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 124 transitions, 1181 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-04 15:26:12,711 INFO L231 Difference]: Finished difference. Result has 131 places, 110 transitions, 949 flow [2024-06-04 15:26:12,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=949, PETRI_PLACES=131, PETRI_TRANSITIONS=110} [2024-06-04 15:26:12,711 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 99 predicate places. [2024-06-04 15:26:12,712 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 110 transitions, 949 flow [2024-06-04 15:26:12,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:12,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:12,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:12,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-04 15:26:12,712 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)] === [2024-06-04 15:26:12,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:12,712 INFO L85 PathProgramCache]: Analyzing trace with hash -539128459, now seen corresponding path program 5 times [2024-06-04 15:26:12,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:12,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715643864] [2024-06-04 15:26:12,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:12,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:12,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:13,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:13,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:13,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715643864] [2024-06-04 15:26:13,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715643864] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:13,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:13,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:26:13,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434691925] [2024-06-04 15:26:13,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:13,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:26:13,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:13,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:26:13,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:26:13,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:26:13,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 110 transitions, 949 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:13,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:13,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:26:13,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:13,917 INFO L124 PetriNetUnfolderBase]: 274/528 cut-off events. [2024-06-04 15:26:13,917 INFO L125 PetriNetUnfolderBase]: For 14352/14352 co-relation queries the response was YES. [2024-06-04 15:26:13,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3166 conditions, 528 events. 274/528 cut-off events. For 14352/14352 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2467 event pairs, 39 based on Foata normal form. 2/524 useless extension candidates. Maximal degree in co-relation 3101. Up to 353 conditions per place. [2024-06-04 15:26:13,920 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 80 selfloop transitions, 43 changer transitions 0/127 dead transitions. [2024-06-04 15:26:13,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 127 transitions, 1353 flow [2024-06-04 15:26:13,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:26:13,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:26:13,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-04 15:26:13,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41515151515151516 [2024-06-04 15:26:13,921 INFO L175 Difference]: Start difference. First operand has 131 places, 110 transitions, 949 flow. Second operand 10 states and 137 transitions. [2024-06-04 15:26:13,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 127 transitions, 1353 flow [2024-06-04 15:26:13,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 127 transitions, 1223 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-04 15:26:13,940 INFO L231 Difference]: Finished difference. Result has 133 places, 113 transitions, 981 flow [2024-06-04 15:26:13,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=819, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=981, PETRI_PLACES=133, PETRI_TRANSITIONS=113} [2024-06-04 15:26:13,940 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 101 predicate places. [2024-06-04 15:26:13,940 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 113 transitions, 981 flow [2024-06-04 15:26:13,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:13,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:13,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:13,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-04 15:26:13,941 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)] === [2024-06-04 15:26:13,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:13,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1281505689, now seen corresponding path program 5 times [2024-06-04 15:26:13,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:13,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289019278] [2024-06-04 15:26:13,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:13,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:13,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:14,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:14,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:14,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289019278] [2024-06-04 15:26:14,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289019278] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:14,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:14,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:26:14,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468878132] [2024-06-04 15:26:14,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:14,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:26:14,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:14,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:26:14,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:26:14,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-04 15:26:14,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 113 transitions, 981 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:14,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:14,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-04 15:26:14,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:14,978 INFO L124 PetriNetUnfolderBase]: 262/526 cut-off events. [2024-06-04 15:26:14,978 INFO L125 PetriNetUnfolderBase]: For 16259/16264 co-relation queries the response was YES. [2024-06-04 15:26:14,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3120 conditions, 526 events. 262/526 cut-off events. For 16259/16264 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2503 event pairs, 35 based on Foata normal form. 7/531 useless extension candidates. Maximal degree in co-relation 3054. Up to 422 conditions per place. [2024-06-04 15:26:14,981 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 98 selfloop transitions, 19 changer transitions 0/127 dead transitions. [2024-06-04 15:26:14,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 127 transitions, 1267 flow [2024-06-04 15:26:14,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:26:14,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:26:14,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 129 transitions. [2024-06-04 15:26:14,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2024-06-04 15:26:14,982 INFO L175 Difference]: Start difference. First operand has 133 places, 113 transitions, 981 flow. Second operand 9 states and 129 transitions. [2024-06-04 15:26:14,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 127 transitions, 1267 flow [2024-06-04 15:26:15,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 127 transitions, 1127 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-04 15:26:15,004 INFO L231 Difference]: Finished difference. Result has 134 places, 114 transitions, 903 flow [2024-06-04 15:26:15,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=841, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=903, PETRI_PLACES=134, PETRI_TRANSITIONS=114} [2024-06-04 15:26:15,005 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 102 predicate places. [2024-06-04 15:26:15,005 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 114 transitions, 903 flow [2024-06-04 15:26:15,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:15,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:15,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:15,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-04 15:26:15,006 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)] === [2024-06-04 15:26:15,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:15,006 INFO L85 PathProgramCache]: Analyzing trace with hash -2121687397, now seen corresponding path program 6 times [2024-06-04 15:26:15,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:15,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391462001] [2024-06-04 15:26:15,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:15,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:15,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:15,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:15,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:15,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391462001] [2024-06-04 15:26:15,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391462001] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:15,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:15,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:26:15,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422617865] [2024-06-04 15:26:15,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:15,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:26:15,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:15,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:26:15,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:26:15,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-04 15:26:15,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 114 transitions, 903 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:15,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:15,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-04 15:26:15,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:15,974 INFO L124 PetriNetUnfolderBase]: 271/543 cut-off events. [2024-06-04 15:26:15,975 INFO L125 PetriNetUnfolderBase]: For 16354/16356 co-relation queries the response was YES. [2024-06-04 15:26:15,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3120 conditions, 543 events. 271/543 cut-off events. For 16354/16356 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2617 event pairs, 27 based on Foata normal form. 4/545 useless extension candidates. Maximal degree in co-relation 3053. Up to 432 conditions per place. [2024-06-04 15:26:15,978 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 103 selfloop transitions, 20 changer transitions 0/133 dead transitions. [2024-06-04 15:26:15,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 133 transitions, 1229 flow [2024-06-04 15:26:15,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:26:15,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:26:15,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 130 transitions. [2024-06-04 15:26:15,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4377104377104377 [2024-06-04 15:26:15,979 INFO L175 Difference]: Start difference. First operand has 134 places, 114 transitions, 903 flow. Second operand 9 states and 130 transitions. [2024-06-04 15:26:15,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 133 transitions, 1229 flow [2024-06-04 15:26:15,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 133 transitions, 1175 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-04 15:26:16,001 INFO L231 Difference]: Finished difference. Result has 138 places, 117 transitions, 948 flow [2024-06-04 15:26:16,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=851, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=948, PETRI_PLACES=138, PETRI_TRANSITIONS=117} [2024-06-04 15:26:16,001 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 106 predicate places. [2024-06-04 15:26:16,001 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 117 transitions, 948 flow [2024-06-04 15:26:16,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:16,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:16,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:16,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-04 15:26:16,002 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)] === [2024-06-04 15:26:16,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:16,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1882250765, now seen corresponding path program 7 times [2024-06-04 15:26:16,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:16,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156962602] [2024-06-04 15:26:16,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:16,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:16,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:16,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:16,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:16,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156962602] [2024-06-04 15:26:16,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156962602] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:16,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:16,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:26:16,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132137103] [2024-06-04 15:26:16,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:16,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:26:16,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:16,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:26:16,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:26:16,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-04 15:26:16,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 117 transitions, 948 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:16,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:16,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-04 15:26:16,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:17,011 INFO L124 PetriNetUnfolderBase]: 280/564 cut-off events. [2024-06-04 15:26:17,011 INFO L125 PetriNetUnfolderBase]: For 17352/17354 co-relation queries the response was YES. [2024-06-04 15:26:17,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3245 conditions, 564 events. 280/564 cut-off events. For 17352/17354 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2771 event pairs, 30 based on Foata normal form. 4/566 useless extension candidates. Maximal degree in co-relation 3175. Up to 451 conditions per place. [2024-06-04 15:26:17,014 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 105 selfloop transitions, 19 changer transitions 0/134 dead transitions. [2024-06-04 15:26:17,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 134 transitions, 1266 flow [2024-06-04 15:26:17,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:26:17,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:26:17,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 130 transitions. [2024-06-04 15:26:17,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4377104377104377 [2024-06-04 15:26:17,015 INFO L175 Difference]: Start difference. First operand has 138 places, 117 transitions, 948 flow. Second operand 9 states and 130 transitions. [2024-06-04 15:26:17,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 134 transitions, 1266 flow [2024-06-04 15:26:17,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 134 transitions, 1212 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-04 15:26:17,039 INFO L231 Difference]: Finished difference. Result has 143 places, 119 transitions, 972 flow [2024-06-04 15:26:17,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=894, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=972, PETRI_PLACES=143, PETRI_TRANSITIONS=119} [2024-06-04 15:26:17,039 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 111 predicate places. [2024-06-04 15:26:17,039 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 119 transitions, 972 flow [2024-06-04 15:26:17,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:17,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:17,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:17,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-04 15:26:17,040 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)] === [2024-06-04 15:26:17,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:17,040 INFO L85 PathProgramCache]: Analyzing trace with hash -2118830437, now seen corresponding path program 8 times [2024-06-04 15:26:17,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:17,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241961855] [2024-06-04 15:26:17,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:17,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:17,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:17,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:17,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:17,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241961855] [2024-06-04 15:26:17,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241961855] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:17,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:17,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:26:17,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418962951] [2024-06-04 15:26:17,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:17,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:26:17,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:17,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:26:17,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:26:17,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-04 15:26:17,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 119 transitions, 972 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:17,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:17,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-04 15:26:17,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:18,014 INFO L124 PetriNetUnfolderBase]: 284/572 cut-off events. [2024-06-04 15:26:18,014 INFO L125 PetriNetUnfolderBase]: For 18345/18347 co-relation queries the response was YES. [2024-06-04 15:26:18,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3309 conditions, 572 events. 284/572 cut-off events. For 18345/18347 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2840 event pairs, 39 based on Foata normal form. 4/574 useless extension candidates. Maximal degree in co-relation 3237. Up to 468 conditions per place. [2024-06-04 15:26:18,017 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 103 selfloop transitions, 21 changer transitions 0/134 dead transitions. [2024-06-04 15:26:18,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 134 transitions, 1280 flow [2024-06-04 15:26:18,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:26:18,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:26:18,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 129 transitions. [2024-06-04 15:26:18,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2024-06-04 15:26:18,018 INFO L175 Difference]: Start difference. First operand has 143 places, 119 transitions, 972 flow. Second operand 9 states and 129 transitions. [2024-06-04 15:26:18,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 134 transitions, 1280 flow [2024-06-04 15:26:18,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 134 transitions, 1222 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-04 15:26:18,044 INFO L231 Difference]: Finished difference. Result has 146 places, 120 transitions, 986 flow [2024-06-04 15:26:18,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=914, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=986, PETRI_PLACES=146, PETRI_TRANSITIONS=120} [2024-06-04 15:26:18,045 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 114 predicate places. [2024-06-04 15:26:18,045 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 120 transitions, 986 flow [2024-06-04 15:26:18,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:18,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:18,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:18,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-04 15:26:18,046 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)] === [2024-06-04 15:26:18,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:18,046 INFO L85 PathProgramCache]: Analyzing trace with hash -748153185, now seen corresponding path program 9 times [2024-06-04 15:26:18,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:18,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086132165] [2024-06-04 15:26:18,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:18,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:18,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:18,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:18,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:18,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086132165] [2024-06-04 15:26:18,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086132165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:18,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:18,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:26:18,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902247558] [2024-06-04 15:26:18,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:18,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:26:18,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:18,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:26:18,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:26:18,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-04 15:26:18,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 120 transitions, 986 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:18,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:18,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-04 15:26:18,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:19,083 INFO L124 PetriNetUnfolderBase]: 281/567 cut-off events. [2024-06-04 15:26:19,083 INFO L125 PetriNetUnfolderBase]: For 17617/17619 co-relation queries the response was YES. [2024-06-04 15:26:19,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3193 conditions, 567 events. 281/567 cut-off events. For 17617/17619 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2798 event pairs, 24 based on Foata normal form. 4/569 useless extension candidates. Maximal degree in co-relation 3120. Up to 419 conditions per place. [2024-06-04 15:26:19,086 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 103 selfloop transitions, 23 changer transitions 0/136 dead transitions. [2024-06-04 15:26:19,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 136 transitions, 1278 flow [2024-06-04 15:26:19,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:26:19,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:26:19,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 128 transitions. [2024-06-04 15:26:19,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43097643097643096 [2024-06-04 15:26:19,097 INFO L175 Difference]: Start difference. First operand has 146 places, 120 transitions, 986 flow. Second operand 9 states and 128 transitions. [2024-06-04 15:26:19,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 136 transitions, 1278 flow [2024-06-04 15:26:19,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 136 transitions, 1196 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-04 15:26:19,128 INFO L231 Difference]: Finished difference. Result has 146 places, 120 transitions, 954 flow [2024-06-04 15:26:19,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=904, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=954, PETRI_PLACES=146, PETRI_TRANSITIONS=120} [2024-06-04 15:26:19,129 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 114 predicate places. [2024-06-04 15:26:19,129 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 120 transitions, 954 flow [2024-06-04 15:26:19,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:19,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:19,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:19,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-04 15:26:19,130 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)] === [2024-06-04 15:26:19,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:19,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1797136590, now seen corresponding path program 1 times [2024-06-04 15:26:19,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:19,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563435722] [2024-06-04 15:26:19,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:19,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:19,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:19,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:19,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:19,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563435722] [2024-06-04 15:26:19,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563435722] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:19,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:19,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:26:19,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291097269] [2024-06-04 15:26:19,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:19,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:26:19,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:19,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:26:19,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:26:20,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:26:20,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 120 transitions, 954 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:20,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:20,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:26:20,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:20,262 INFO L124 PetriNetUnfolderBase]: 304/602 cut-off events. [2024-06-04 15:26:20,263 INFO L125 PetriNetUnfolderBase]: For 17857/17857 co-relation queries the response was YES. [2024-06-04 15:26:20,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3347 conditions, 602 events. 304/602 cut-off events. For 17857/17857 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 2994 event pairs, 50 based on Foata normal form. 2/602 useless extension candidates. Maximal degree in co-relation 3275. Up to 514 conditions per place. [2024-06-04 15:26:20,266 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 112 selfloop transitions, 20 changer transitions 0/136 dead transitions. [2024-06-04 15:26:20,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 136 transitions, 1293 flow [2024-06-04 15:26:20,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:26:20,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:26:20,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-04 15:26:20,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4006734006734007 [2024-06-04 15:26:20,277 INFO L175 Difference]: Start difference. First operand has 146 places, 120 transitions, 954 flow. Second operand 9 states and 119 transitions. [2024-06-04 15:26:20,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 136 transitions, 1293 flow [2024-06-04 15:26:20,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 136 transitions, 1179 flow, removed 17 selfloop flow, removed 11 redundant places. [2024-06-04 15:26:20,308 INFO L231 Difference]: Finished difference. Result has 145 places, 125 transitions, 942 flow [2024-06-04 15:26:20,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=840, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=942, PETRI_PLACES=145, PETRI_TRANSITIONS=125} [2024-06-04 15:26:20,309 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 113 predicate places. [2024-06-04 15:26:20,309 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 125 transitions, 942 flow [2024-06-04 15:26:20,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:20,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:20,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:20,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-04 15:26:20,309 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)] === [2024-06-04 15:26:20,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:20,310 INFO L85 PathProgramCache]: Analyzing trace with hash 2053145494, now seen corresponding path program 2 times [2024-06-04 15:26:20,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:20,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014656726] [2024-06-04 15:26:20,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:20,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:20,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:21,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:21,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:21,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014656726] [2024-06-04 15:26:21,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014656726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:21,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:21,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:26:21,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124895885] [2024-06-04 15:26:21,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:21,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:26:21,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:21,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:26:21,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:26:21,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:26:21,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 125 transitions, 942 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:21,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:21,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:26:21,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:21,350 INFO L124 PetriNetUnfolderBase]: 315/623 cut-off events. [2024-06-04 15:26:21,350 INFO L125 PetriNetUnfolderBase]: For 20061/20061 co-relation queries the response was YES. [2024-06-04 15:26:21,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3459 conditions, 623 events. 315/623 cut-off events. For 20061/20061 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3116 event pairs, 49 based on Foata normal form. 2/623 useless extension candidates. Maximal degree in co-relation 3389. Up to 512 conditions per place. [2024-06-04 15:26:21,369 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 114 selfloop transitions, 22 changer transitions 0/140 dead transitions. [2024-06-04 15:26:21,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 140 transitions, 1348 flow [2024-06-04 15:26:21,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:26:21,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:26:21,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 121 transitions. [2024-06-04 15:26:21,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2024-06-04 15:26:21,371 INFO L175 Difference]: Start difference. First operand has 145 places, 125 transitions, 942 flow. Second operand 9 states and 121 transitions. [2024-06-04 15:26:21,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 140 transitions, 1348 flow [2024-06-04 15:26:21,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 140 transitions, 1300 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-04 15:26:21,406 INFO L231 Difference]: Finished difference. Result has 150 places, 127 transitions, 968 flow [2024-06-04 15:26:21,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=894, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=968, PETRI_PLACES=150, PETRI_TRANSITIONS=127} [2024-06-04 15:26:21,408 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 118 predicate places. [2024-06-04 15:26:21,408 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 127 transitions, 968 flow [2024-06-04 15:26:21,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:21,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:21,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:21,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-04 15:26:21,413 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)] === [2024-06-04 15:26:21,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:21,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1202526284, now seen corresponding path program 3 times [2024-06-04 15:26:21,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:21,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820544214] [2024-06-04 15:26:21,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:21,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:21,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:22,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:22,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:22,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820544214] [2024-06-04 15:26:22,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820544214] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:22,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:22,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:26:22,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976018326] [2024-06-04 15:26:22,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:22,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:26:22,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:22,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:26:22,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:26:22,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:26:22,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 127 transitions, 968 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:22,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:22,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:26:22,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:22,567 INFO L124 PetriNetUnfolderBase]: 312/617 cut-off events. [2024-06-04 15:26:22,567 INFO L125 PetriNetUnfolderBase]: For 19020/19020 co-relation queries the response was YES. [2024-06-04 15:26:22,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3351 conditions, 617 events. 312/617 cut-off events. For 19020/19020 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3081 event pairs, 43 based on Foata normal form. 2/617 useless extension candidates. Maximal degree in co-relation 3280. Up to 498 conditions per place. [2024-06-04 15:26:22,570 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 102 selfloop transitions, 32 changer transitions 0/138 dead transitions. [2024-06-04 15:26:22,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 138 transitions, 1262 flow [2024-06-04 15:26:22,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:26:22,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:26:22,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-04 15:26:22,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40404040404040403 [2024-06-04 15:26:22,571 INFO L175 Difference]: Start difference. First operand has 150 places, 127 transitions, 968 flow. Second operand 9 states and 120 transitions. [2024-06-04 15:26:22,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 138 transitions, 1262 flow [2024-06-04 15:26:22,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 138 transitions, 1219 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-04 15:26:22,602 INFO L231 Difference]: Finished difference. Result has 154 places, 127 transitions, 993 flow [2024-06-04 15:26:22,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=925, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=993, PETRI_PLACES=154, PETRI_TRANSITIONS=127} [2024-06-04 15:26:22,602 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 122 predicate places. [2024-06-04 15:26:22,602 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 127 transitions, 993 flow [2024-06-04 15:26:22,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:22,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:22,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:22,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-04 15:26:22,603 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)] === [2024-06-04 15:26:22,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:22,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1520732906, now seen corresponding path program 4 times [2024-06-04 15:26:22,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:22,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154079968] [2024-06-04 15:26:22,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:22,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:22,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:23,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:23,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:23,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154079968] [2024-06-04 15:26:23,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154079968] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:23,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:23,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:26:23,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916295401] [2024-06-04 15:26:23,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:23,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:26:23,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:23,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:26:23,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:26:23,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:26:23,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 127 transitions, 993 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:23,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:23,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:26:23,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:23,691 INFO L124 PetriNetUnfolderBase]: 319/629 cut-off events. [2024-06-04 15:26:23,691 INFO L125 PetriNetUnfolderBase]: For 19754/19754 co-relation queries the response was YES. [2024-06-04 15:26:23,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3451 conditions, 629 events. 319/629 cut-off events. For 19754/19754 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3190 event pairs, 49 based on Foata normal form. 2/625 useless extension candidates. Maximal degree in co-relation 3378. Up to 538 conditions per place. [2024-06-04 15:26:23,695 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 115 selfloop transitions, 22 changer transitions 0/141 dead transitions. [2024-06-04 15:26:23,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 141 transitions, 1323 flow [2024-06-04 15:26:23,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:26:23,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:26:23,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 121 transitions. [2024-06-04 15:26:23,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2024-06-04 15:26:23,705 INFO L175 Difference]: Start difference. First operand has 154 places, 127 transitions, 993 flow. Second operand 9 states and 121 transitions. [2024-06-04 15:26:23,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 141 transitions, 1323 flow [2024-06-04 15:26:23,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 141 transitions, 1253 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-04 15:26:23,741 INFO L231 Difference]: Finished difference. Result has 156 places, 130 transitions, 1008 flow [2024-06-04 15:26:23,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=925, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1008, PETRI_PLACES=156, PETRI_TRANSITIONS=130} [2024-06-04 15:26:23,742 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 124 predicate places. [2024-06-04 15:26:23,742 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 130 transitions, 1008 flow [2024-06-04 15:26:23,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:23,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:23,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:23,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-04 15:26:23,743 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)] === [2024-06-04 15:26:23,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:23,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1858927880, now seen corresponding path program 5 times [2024-06-04 15:26:23,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:23,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405528430] [2024-06-04 15:26:23,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:23,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:23,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:24,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:24,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:24,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405528430] [2024-06-04 15:26:24,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405528430] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:24,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:24,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:26:24,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828986568] [2024-06-04 15:26:24,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:24,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:26:24,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:24,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:26:24,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:26:24,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:26:24,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 130 transitions, 1008 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:24,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:24,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:26:24,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:24,861 INFO L124 PetriNetUnfolderBase]: 330/652 cut-off events. [2024-06-04 15:26:24,861 INFO L125 PetriNetUnfolderBase]: For 22544/22544 co-relation queries the response was YES. [2024-06-04 15:26:24,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3656 conditions, 652 events. 330/652 cut-off events. For 22544/22544 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3309 event pairs, 49 based on Foata normal form. 2/652 useless extension candidates. Maximal degree in co-relation 3582. Up to 505 conditions per place. [2024-06-04 15:26:24,865 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 113 selfloop transitions, 30 changer transitions 0/147 dead transitions. [2024-06-04 15:26:24,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 147 transitions, 1448 flow [2024-06-04 15:26:24,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:26:24,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:26:24,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 123 transitions. [2024-06-04 15:26:24,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41414141414141414 [2024-06-04 15:26:24,866 INFO L175 Difference]: Start difference. First operand has 156 places, 130 transitions, 1008 flow. Second operand 9 states and 123 transitions. [2024-06-04 15:26:24,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 147 transitions, 1448 flow [2024-06-04 15:26:24,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 147 transitions, 1397 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-04 15:26:24,905 INFO L231 Difference]: Finished difference. Result has 159 places, 132 transitions, 1057 flow [2024-06-04 15:26:24,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=957, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1057, PETRI_PLACES=159, PETRI_TRANSITIONS=132} [2024-06-04 15:26:24,906 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 127 predicate places. [2024-06-04 15:26:24,906 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 132 transitions, 1057 flow [2024-06-04 15:26:24,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:24,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:24,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:24,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-04 15:26:24,907 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)] === [2024-06-04 15:26:24,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:24,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1609446536, now seen corresponding path program 6 times [2024-06-04 15:26:24,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:24,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892234214] [2024-06-04 15:26:24,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:24,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:24,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:25,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:25,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:25,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892234214] [2024-06-04 15:26:25,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892234214] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:25,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:25,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:26:25,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145762269] [2024-06-04 15:26:25,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:25,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:26:25,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:25,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:26:25,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:26:25,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:26:25,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 132 transitions, 1057 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:25,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:25,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:26:25,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:25,988 INFO L124 PetriNetUnfolderBase]: 334/660 cut-off events. [2024-06-04 15:26:25,988 INFO L125 PetriNetUnfolderBase]: For 23672/23672 co-relation queries the response was YES. [2024-06-04 15:26:25,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3747 conditions, 660 events. 334/660 cut-off events. For 23672/23672 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3351 event pairs, 38 based on Foata normal form. 2/660 useless extension candidates. Maximal degree in co-relation 3672. Up to 482 conditions per place. [2024-06-04 15:26:25,992 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 118 selfloop transitions, 26 changer transitions 0/148 dead transitions. [2024-06-04 15:26:25,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 148 transitions, 1399 flow [2024-06-04 15:26:25,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:26:25,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:26:25,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-04 15:26:25,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4006734006734007 [2024-06-04 15:26:25,993 INFO L175 Difference]: Start difference. First operand has 159 places, 132 transitions, 1057 flow. Second operand 9 states and 119 transitions. [2024-06-04 15:26:25,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 148 transitions, 1399 flow [2024-06-04 15:26:26,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 148 transitions, 1348 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-04 15:26:26,035 INFO L231 Difference]: Finished difference. Result has 163 places, 133 transitions, 1085 flow [2024-06-04 15:26:26,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1006, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1085, PETRI_PLACES=163, PETRI_TRANSITIONS=133} [2024-06-04 15:26:26,035 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 131 predicate places. [2024-06-04 15:26:26,035 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 133 transitions, 1085 flow [2024-06-04 15:26:26,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:26,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:26,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:26,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-04 15:26:26,036 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)] === [2024-06-04 15:26:26,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:26,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1501028624, now seen corresponding path program 1 times [2024-06-04 15:26:26,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:26,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236830864] [2024-06-04 15:26:26,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:26,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:26,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:26,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:26,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:26,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236830864] [2024-06-04 15:26:26,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236830864] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:26,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:26,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:26:26,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810419299] [2024-06-04 15:26:26,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:26,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:26:26,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:26,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:26:26,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:26:27,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:26:27,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 133 transitions, 1085 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:27,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:27,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:26:27,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:27,200 INFO L124 PetriNetUnfolderBase]: 340/668 cut-off events. [2024-06-04 15:26:27,200 INFO L125 PetriNetUnfolderBase]: For 23866/23866 co-relation queries the response was YES. [2024-06-04 15:26:27,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3858 conditions, 668 events. 340/668 cut-off events. For 23866/23866 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3422 event pairs, 52 based on Foata normal form. 1/663 useless extension candidates. Maximal degree in co-relation 3781. Up to 577 conditions per place. [2024-06-04 15:26:27,204 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 119 selfloop transitions, 25 changer transitions 0/148 dead transitions. [2024-06-04 15:26:27,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 148 transitions, 1457 flow [2024-06-04 15:26:27,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:26:27,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:26:27,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-04 15:26:27,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-04 15:26:27,205 INFO L175 Difference]: Start difference. First operand has 163 places, 133 transitions, 1085 flow. Second operand 10 states and 132 transitions. [2024-06-04 15:26:27,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 148 transitions, 1457 flow [2024-06-04 15:26:27,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 148 transitions, 1394 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-04 15:26:27,247 INFO L231 Difference]: Finished difference. Result has 167 places, 137 transitions, 1144 flow [2024-06-04 15:26:27,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1022, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1144, PETRI_PLACES=167, PETRI_TRANSITIONS=137} [2024-06-04 15:26:27,248 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 135 predicate places. [2024-06-04 15:26:27,248 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 137 transitions, 1144 flow [2024-06-04 15:26:27,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:27,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:27,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:27,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-04 15:26:27,248 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)] === [2024-06-04 15:26:27,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:27,248 INFO L85 PathProgramCache]: Analyzing trace with hash -2110050492, now seen corresponding path program 1 times [2024-06-04 15:26:27,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:27,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659693611] [2024-06-04 15:26:27,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:27,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:27,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:28,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:28,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:28,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659693611] [2024-06-04 15:26:28,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659693611] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:28,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:28,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:26:28,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185611972] [2024-06-04 15:26:28,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:28,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:26:28,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:28,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:26:28,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:26:28,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:26:28,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 137 transitions, 1144 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:28,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:28,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:26:28,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:28,556 INFO L124 PetriNetUnfolderBase]: 360/716 cut-off events. [2024-06-04 15:26:28,556 INFO L125 PetriNetUnfolderBase]: For 36325/36325 co-relation queries the response was YES. [2024-06-04 15:26:28,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4117 conditions, 716 events. 360/716 cut-off events. For 36325/36325 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3694 event pairs, 69 based on Foata normal form. 12/726 useless extension candidates. Maximal degree in co-relation 4038. Up to 560 conditions per place. [2024-06-04 15:26:28,561 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 122 selfloop transitions, 24 changer transitions 7/157 dead transitions. [2024-06-04 15:26:28,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 157 transitions, 1602 flow [2024-06-04 15:26:28,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:26:28,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:26:28,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-04 15:26:28,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40771349862258954 [2024-06-04 15:26:28,562 INFO L175 Difference]: Start difference. First operand has 167 places, 137 transitions, 1144 flow. Second operand 11 states and 148 transitions. [2024-06-04 15:26:28,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 157 transitions, 1602 flow [2024-06-04 15:26:28,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 157 transitions, 1514 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-04 15:26:28,612 INFO L231 Difference]: Finished difference. Result has 171 places, 136 transitions, 1119 flow [2024-06-04 15:26:28,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1056, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1119, PETRI_PLACES=171, PETRI_TRANSITIONS=136} [2024-06-04 15:26:28,613 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 139 predicate places. [2024-06-04 15:26:28,613 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 136 transitions, 1119 flow [2024-06-04 15:26:28,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:28,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:28,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:28,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-04 15:26:28,613 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)] === [2024-06-04 15:26:28,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:28,613 INFO L85 PathProgramCache]: Analyzing trace with hash -2010622544, now seen corresponding path program 7 times [2024-06-04 15:26:28,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:28,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899353833] [2024-06-04 15:26:28,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:28,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:28,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:29,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:29,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:29,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899353833] [2024-06-04 15:26:29,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899353833] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:29,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:29,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:26:29,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508725768] [2024-06-04 15:26:29,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:29,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:26:29,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:29,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:26:29,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:26:29,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:26:29,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 136 transitions, 1119 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:29,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:29,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:26:29,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:29,652 INFO L124 PetriNetUnfolderBase]: 355/705 cut-off events. [2024-06-04 15:26:29,652 INFO L125 PetriNetUnfolderBase]: For 27643/27643 co-relation queries the response was YES. [2024-06-04 15:26:29,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4119 conditions, 705 events. 355/705 cut-off events. For 27643/27643 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3688 event pairs, 69 based on Foata normal form. 2/701 useless extension candidates. Maximal degree in co-relation 4039. Up to 592 conditions per place. [2024-06-04 15:26:29,657 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 116 selfloop transitions, 30 changer transitions 0/150 dead transitions. [2024-06-04 15:26:29,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 150 transitions, 1505 flow [2024-06-04 15:26:29,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:26:29,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:26:29,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-04 15:26:29,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396969696969697 [2024-06-04 15:26:29,658 INFO L175 Difference]: Start difference. First operand has 171 places, 136 transitions, 1119 flow. Second operand 10 states and 131 transitions. [2024-06-04 15:26:29,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 150 transitions, 1505 flow [2024-06-04 15:26:29,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 150 transitions, 1453 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-04 15:26:29,713 INFO L231 Difference]: Finished difference. Result has 173 places, 140 transitions, 1194 flow [2024-06-04 15:26:29,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1067, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1194, PETRI_PLACES=173, PETRI_TRANSITIONS=140} [2024-06-04 15:26:29,714 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 141 predicate places. [2024-06-04 15:26:29,714 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 140 transitions, 1194 flow [2024-06-04 15:26:29,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:29,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:29,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:29,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-04 15:26:29,714 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)] === [2024-06-04 15:26:29,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:29,715 INFO L85 PathProgramCache]: Analyzing trace with hash -397222234, now seen corresponding path program 8 times [2024-06-04 15:26:29,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:29,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004765985] [2024-06-04 15:26:29,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:29,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:29,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:30,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:30,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:30,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004765985] [2024-06-04 15:26:30,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004765985] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:30,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:30,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:26:30,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959134658] [2024-06-04 15:26:30,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:30,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:26:30,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:30,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:26:30,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:26:30,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:26:30,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 140 transitions, 1194 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:30,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:30,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:26:30,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:30,836 INFO L124 PetriNetUnfolderBase]: 359/713 cut-off events. [2024-06-04 15:26:30,836 INFO L125 PetriNetUnfolderBase]: For 29014/29014 co-relation queries the response was YES. [2024-06-04 15:26:30,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4240 conditions, 713 events. 359/713 cut-off events. For 29014/29014 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3744 event pairs, 71 based on Foata normal form. 2/709 useless extension candidates. Maximal degree in co-relation 4158. Up to 600 conditions per place. [2024-06-04 15:26:30,841 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 118 selfloop transitions, 31 changer transitions 0/153 dead transitions. [2024-06-04 15:26:30,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 153 transitions, 1575 flow [2024-06-04 15:26:30,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:26:30,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:26:30,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-04 15:26:30,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40404040404040403 [2024-06-04 15:26:30,843 INFO L175 Difference]: Start difference. First operand has 173 places, 140 transitions, 1194 flow. Second operand 9 states and 120 transitions. [2024-06-04 15:26:30,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 153 transitions, 1575 flow [2024-06-04 15:26:30,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 153 transitions, 1466 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-04 15:26:30,908 INFO L231 Difference]: Finished difference. Result has 175 places, 144 transitions, 1225 flow [2024-06-04 15:26:30,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1089, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1225, PETRI_PLACES=175, PETRI_TRANSITIONS=144} [2024-06-04 15:26:30,908 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 143 predicate places. [2024-06-04 15:26:30,908 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 144 transitions, 1225 flow [2024-06-04 15:26:30,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:30,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:30,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:30,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-04 15:26:30,909 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)] === [2024-06-04 15:26:30,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:30,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1672211734, now seen corresponding path program 9 times [2024-06-04 15:26:30,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:30,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133319107] [2024-06-04 15:26:30,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:30,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:30,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:31,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:31,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:31,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133319107] [2024-06-04 15:26:31,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133319107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:31,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:31,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:26:31,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990236963] [2024-06-04 15:26:31,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:31,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:26:31,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:31,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:26:31,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:26:31,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:26:31,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 144 transitions, 1225 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:31,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:31,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:26:31,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:32,002 INFO L124 PetriNetUnfolderBase]: 363/719 cut-off events. [2024-06-04 15:26:32,002 INFO L125 PetriNetUnfolderBase]: For 30328/30328 co-relation queries the response was YES. [2024-06-04 15:26:32,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4281 conditions, 719 events. 363/719 cut-off events. For 30328/30328 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3783 event pairs, 67 based on Foata normal form. 2/715 useless extension candidates. Maximal degree in co-relation 4199. Up to 579 conditions per place. [2024-06-04 15:26:32,007 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 118 selfloop transitions, 34 changer transitions 0/156 dead transitions. [2024-06-04 15:26:32,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 156 transitions, 1675 flow [2024-06-04 15:26:32,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:26:32,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:26:32,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2024-06-04 15:26:32,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107744107744108 [2024-06-04 15:26:32,007 INFO L175 Difference]: Start difference. First operand has 175 places, 144 transitions, 1225 flow. Second operand 9 states and 122 transitions. [2024-06-04 15:26:32,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 156 transitions, 1675 flow [2024-06-04 15:26:32,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 156 transitions, 1596 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-04 15:26:32,065 INFO L231 Difference]: Finished difference. Result has 180 places, 145 transitions, 1242 flow [2024-06-04 15:26:32,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1146, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1242, PETRI_PLACES=180, PETRI_TRANSITIONS=145} [2024-06-04 15:26:32,065 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 148 predicate places. [2024-06-04 15:26:32,065 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 145 transitions, 1242 flow [2024-06-04 15:26:32,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:32,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:32,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:32,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-04 15:26:32,066 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)] === [2024-06-04 15:26:32,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:32,066 INFO L85 PathProgramCache]: Analyzing trace with hash 211092164, now seen corresponding path program 10 times [2024-06-04 15:26:32,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:32,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273898625] [2024-06-04 15:26:32,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:32,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:32,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:32,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:32,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:32,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273898625] [2024-06-04 15:26:32,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273898625] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:32,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:32,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:26:32,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225464441] [2024-06-04 15:26:32,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:32,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:26:32,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:32,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:26:32,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:26:32,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:26:32,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 145 transitions, 1242 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:32,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:32,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:26:32,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:33,184 INFO L124 PetriNetUnfolderBase]: 360/714 cut-off events. [2024-06-04 15:26:33,185 INFO L125 PetriNetUnfolderBase]: For 28433/28433 co-relation queries the response was YES. [2024-06-04 15:26:33,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4122 conditions, 714 events. 360/714 cut-off events. For 28433/28433 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3750 event pairs, 68 based on Foata normal form. 2/710 useless extension candidates. Maximal degree in co-relation 4039. Up to 603 conditions per place. [2024-06-04 15:26:33,190 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 118 selfloop transitions, 32 changer transitions 0/154 dead transitions. [2024-06-04 15:26:33,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 154 transitions, 1562 flow [2024-06-04 15:26:33,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:26:33,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:26:33,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-04 15:26:33,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4006734006734007 [2024-06-04 15:26:33,190 INFO L175 Difference]: Start difference. First operand has 180 places, 145 transitions, 1242 flow. Second operand 9 states and 119 transitions. [2024-06-04 15:26:33,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 154 transitions, 1562 flow [2024-06-04 15:26:33,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 154 transitions, 1440 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-04 15:26:33,254 INFO L231 Difference]: Finished difference. Result has 181 places, 145 transitions, 1188 flow [2024-06-04 15:26:33,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1120, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1188, PETRI_PLACES=181, PETRI_TRANSITIONS=145} [2024-06-04 15:26:33,255 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 149 predicate places. [2024-06-04 15:26:33,255 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 145 transitions, 1188 flow [2024-06-04 15:26:33,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:33,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:33,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:33,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-04 15:26:33,256 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)] === [2024-06-04 15:26:33,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:33,256 INFO L85 PathProgramCache]: Analyzing trace with hash -2002988112, now seen corresponding path program 2 times [2024-06-04 15:26:33,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:33,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887821339] [2024-06-04 15:26:33,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:33,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:33,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:34,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:34,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:34,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887821339] [2024-06-04 15:26:34,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887821339] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:34,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:34,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:26:34,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419304552] [2024-06-04 15:26:34,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:34,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:26:34,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:34,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:26:34,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:26:34,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:26:34,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 145 transitions, 1188 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:34,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:34,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:26:34,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:34,621 INFO L124 PetriNetUnfolderBase]: 380/762 cut-off events. [2024-06-04 15:26:34,621 INFO L125 PetriNetUnfolderBase]: For 41711/41711 co-relation queries the response was YES. [2024-06-04 15:26:34,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4252 conditions, 762 events. 380/762 cut-off events. For 41711/41711 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4072 event pairs, 72 based on Foata normal form. 12/768 useless extension candidates. Maximal degree in co-relation 4170. Up to 521 conditions per place. [2024-06-04 15:26:34,626 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 113 selfloop transitions, 41 changer transitions 7/165 dead transitions. [2024-06-04 15:26:34,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 165 transitions, 1712 flow [2024-06-04 15:26:34,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:26:34,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:26:34,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 154 transitions. [2024-06-04 15:26:34,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-04 15:26:34,627 INFO L175 Difference]: Start difference. First operand has 181 places, 145 transitions, 1188 flow. Second operand 11 states and 154 transitions. [2024-06-04 15:26:34,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 165 transitions, 1712 flow [2024-06-04 15:26:34,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 165 transitions, 1600 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-04 15:26:34,687 INFO L231 Difference]: Finished difference. Result has 182 places, 144 transitions, 1179 flow [2024-06-04 15:26:34,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1078, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1179, PETRI_PLACES=182, PETRI_TRANSITIONS=144} [2024-06-04 15:26:34,687 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 150 predicate places. [2024-06-04 15:26:34,687 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 144 transitions, 1179 flow [2024-06-04 15:26:34,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:34,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:34,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:34,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-04 15:26:34,688 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)] === [2024-06-04 15:26:34,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:34,688 INFO L85 PathProgramCache]: Analyzing trace with hash 573040832, now seen corresponding path program 3 times [2024-06-04 15:26:34,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:34,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108843682] [2024-06-04 15:26:34,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:34,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:34,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:35,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:35,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:35,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108843682] [2024-06-04 15:26:35,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108843682] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:35,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:35,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:26:35,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166802243] [2024-06-04 15:26:35,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:35,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:26:35,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:35,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:26:35,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:26:35,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:26:35,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 144 transitions, 1179 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:35,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:35,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:26:35,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:36,113 INFO L124 PetriNetUnfolderBase]: 388/780 cut-off events. [2024-06-04 15:26:36,113 INFO L125 PetriNetUnfolderBase]: For 43989/43989 co-relation queries the response was YES. [2024-06-04 15:26:36,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4395 conditions, 780 events. 388/780 cut-off events. For 43989/43989 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4185 event pairs, 74 based on Foata normal form. 12/786 useless extension candidates. Maximal degree in co-relation 4314. Up to 545 conditions per place. [2024-06-04 15:26:36,117 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 112 selfloop transitions, 41 changer transitions 7/164 dead transitions. [2024-06-04 15:26:36,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 164 transitions, 1709 flow [2024-06-04 15:26:36,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:26:36,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:26:36,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 153 transitions. [2024-06-04 15:26:36,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4214876033057851 [2024-06-04 15:26:36,118 INFO L175 Difference]: Start difference. First operand has 182 places, 144 transitions, 1179 flow. Second operand 11 states and 153 transitions. [2024-06-04 15:26:36,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 164 transitions, 1709 flow [2024-06-04 15:26:36,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 164 transitions, 1619 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-04 15:26:36,171 INFO L231 Difference]: Finished difference. Result has 184 places, 143 transitions, 1192 flow [2024-06-04 15:26:36,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1089, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1192, PETRI_PLACES=184, PETRI_TRANSITIONS=143} [2024-06-04 15:26:36,171 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 152 predicate places. [2024-06-04 15:26:36,172 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 143 transitions, 1192 flow [2024-06-04 15:26:36,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:36,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:36,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:36,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-04 15:26:36,172 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)] === [2024-06-04 15:26:36,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:36,172 INFO L85 PathProgramCache]: Analyzing trace with hash 780587204, now seen corresponding path program 4 times [2024-06-04 15:26:36,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:36,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756108296] [2024-06-04 15:26:36,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:36,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:36,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:37,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:37,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:37,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756108296] [2024-06-04 15:26:37,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756108296] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:37,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:37,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:26:37,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839509977] [2024-06-04 15:26:37,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:37,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:26:37,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:37,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:26:37,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:26:37,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:26:37,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 143 transitions, 1192 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:37,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:37,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:26:37,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:37,571 INFO L124 PetriNetUnfolderBase]: 399/814 cut-off events. [2024-06-04 15:26:37,571 INFO L125 PetriNetUnfolderBase]: For 46616/46616 co-relation queries the response was YES. [2024-06-04 15:26:37,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4607 conditions, 814 events. 399/814 cut-off events. For 46616/46616 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4439 event pairs, 91 based on Foata normal form. 12/824 useless extension candidates. Maximal degree in co-relation 4525. Up to 689 conditions per place. [2024-06-04 15:26:37,576 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 134 selfloop transitions, 17 changer transitions 7/162 dead transitions. [2024-06-04 15:26:37,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 162 transitions, 1658 flow [2024-06-04 15:26:37,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:26:37,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:26:37,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-04 15:26:37,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39118457300275483 [2024-06-04 15:26:37,578 INFO L175 Difference]: Start difference. First operand has 184 places, 143 transitions, 1192 flow. Second operand 11 states and 142 transitions. [2024-06-04 15:26:37,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 162 transitions, 1658 flow [2024-06-04 15:26:37,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 162 transitions, 1566 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-04 15:26:37,643 INFO L231 Difference]: Finished difference. Result has 187 places, 144 transitions, 1172 flow [2024-06-04 15:26:37,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1100, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1172, PETRI_PLACES=187, PETRI_TRANSITIONS=144} [2024-06-04 15:26:37,643 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 155 predicate places. [2024-06-04 15:26:37,643 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 144 transitions, 1172 flow [2024-06-04 15:26:37,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:37,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:37,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:37,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-04 15:26:37,643 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)] === [2024-06-04 15:26:37,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:37,644 INFO L85 PathProgramCache]: Analyzing trace with hash 466887974, now seen corresponding path program 5 times [2024-06-04 15:26:37,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:37,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163558422] [2024-06-04 15:26:37,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:37,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:37,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:38,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:38,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:38,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163558422] [2024-06-04 15:26:38,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163558422] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:38,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:38,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:26:38,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401765300] [2024-06-04 15:26:38,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:38,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:26:38,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:38,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:26:38,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:26:38,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:26:38,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 144 transitions, 1172 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:38,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:38,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:26:38,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:38,953 INFO L124 PetriNetUnfolderBase]: 407/835 cut-off events. [2024-06-04 15:26:38,953 INFO L125 PetriNetUnfolderBase]: For 49091/49091 co-relation queries the response was YES. [2024-06-04 15:26:38,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4749 conditions, 835 events. 407/835 cut-off events. For 49091/49091 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4619 event pairs, 82 based on Foata normal form. 12/841 useless extension candidates. Maximal degree in co-relation 4665. Up to 598 conditions per place. [2024-06-04 15:26:38,958 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 107 selfloop transitions, 45 changer transitions 7/163 dead transitions. [2024-06-04 15:26:38,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 163 transitions, 1692 flow [2024-06-04 15:26:38,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:26:38,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:26:38,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 152 transitions. [2024-06-04 15:26:38,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.418732782369146 [2024-06-04 15:26:38,959 INFO L175 Difference]: Start difference. First operand has 187 places, 144 transitions, 1172 flow. Second operand 11 states and 152 transitions. [2024-06-04 15:26:38,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 163 transitions, 1692 flow [2024-06-04 15:26:39,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 163 transitions, 1649 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-04 15:26:39,022 INFO L231 Difference]: Finished difference. Result has 190 places, 143 transitions, 1244 flow [2024-06-04 15:26:39,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1129, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1244, PETRI_PLACES=190, PETRI_TRANSITIONS=143} [2024-06-04 15:26:39,023 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 158 predicate places. [2024-06-04 15:26:39,023 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 143 transitions, 1244 flow [2024-06-04 15:26:39,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:39,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:39,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:39,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-04 15:26:39,023 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)] === [2024-06-04 15:26:39,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:39,023 INFO L85 PathProgramCache]: Analyzing trace with hash 2066470724, now seen corresponding path program 6 times [2024-06-04 15:26:39,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:39,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99660297] [2024-06-04 15:26:39,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:39,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:39,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:39,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:39,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:39,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99660297] [2024-06-04 15:26:39,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99660297] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:39,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:39,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:26:39,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358489570] [2024-06-04 15:26:39,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:39,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:26:39,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:39,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:26:39,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:26:40,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:26:40,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 143 transitions, 1244 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:40,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:40,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:26:40,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:40,326 INFO L124 PetriNetUnfolderBase]: 399/832 cut-off events. [2024-06-04 15:26:40,326 INFO L125 PetriNetUnfolderBase]: For 37464/37464 co-relation queries the response was YES. [2024-06-04 15:26:40,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4834 conditions, 832 events. 399/832 cut-off events. For 37464/37464 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4666 event pairs, 99 based on Foata normal form. 2/832 useless extension candidates. Maximal degree in co-relation 4749. Up to 743 conditions per place. [2024-06-04 15:26:40,330 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 131 selfloop transitions, 21 changer transitions 3/159 dead transitions. [2024-06-04 15:26:40,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 159 transitions, 1659 flow [2024-06-04 15:26:40,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:26:40,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:26:40,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-04 15:26:40,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37373737373737376 [2024-06-04 15:26:40,331 INFO L175 Difference]: Start difference. First operand has 190 places, 143 transitions, 1244 flow. Second operand 12 states and 148 transitions. [2024-06-04 15:26:40,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 159 transitions, 1659 flow [2024-06-04 15:26:40,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 159 transitions, 1553 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-04 15:26:40,400 INFO L231 Difference]: Finished difference. Result has 194 places, 144 transitions, 1222 flow [2024-06-04 15:26:40,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1140, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1222, PETRI_PLACES=194, PETRI_TRANSITIONS=144} [2024-06-04 15:26:40,401 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 162 predicate places. [2024-06-04 15:26:40,401 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 144 transitions, 1222 flow [2024-06-04 15:26:40,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:40,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:40,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:40,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-04 15:26:40,401 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)] === [2024-06-04 15:26:40,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:40,402 INFO L85 PathProgramCache]: Analyzing trace with hash 792015044, now seen corresponding path program 7 times [2024-06-04 15:26:40,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:40,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609932692] [2024-06-04 15:26:40,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:40,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:40,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:41,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:41,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:41,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609932692] [2024-06-04 15:26:41,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609932692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:41,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:41,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:26:41,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334951250] [2024-06-04 15:26:41,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:41,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:26:41,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:41,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:26:41,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:26:41,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:26:41,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 144 transitions, 1222 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:41,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:41,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:26:41,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:41,856 INFO L124 PetriNetUnfolderBase]: 384/795 cut-off events. [2024-06-04 15:26:41,856 INFO L125 PetriNetUnfolderBase]: For 34681/34681 co-relation queries the response was YES. [2024-06-04 15:26:41,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4485 conditions, 795 events. 384/795 cut-off events. For 34681/34681 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4353 event pairs, 92 based on Foata normal form. 2/795 useless extension candidates. Maximal degree in co-relation 4398. Up to 690 conditions per place. [2024-06-04 15:26:41,861 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 131 selfloop transitions, 23 changer transitions 0/158 dead transitions. [2024-06-04 15:26:41,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 158 transitions, 1592 flow [2024-06-04 15:26:41,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:26:41,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:26:41,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-04 15:26:41,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3712121212121212 [2024-06-04 15:26:41,862 INFO L175 Difference]: Start difference. First operand has 194 places, 144 transitions, 1222 flow. Second operand 12 states and 147 transitions. [2024-06-04 15:26:41,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 158 transitions, 1592 flow [2024-06-04 15:26:41,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 158 transitions, 1504 flow, removed 21 selfloop flow, removed 11 redundant places. [2024-06-04 15:26:41,930 INFO L231 Difference]: Finished difference. Result has 195 places, 145 transitions, 1220 flow [2024-06-04 15:26:41,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1134, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1220, PETRI_PLACES=195, PETRI_TRANSITIONS=145} [2024-06-04 15:26:41,931 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 163 predicate places. [2024-06-04 15:26:41,931 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 145 transitions, 1220 flow [2024-06-04 15:26:41,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:41,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:41,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:41,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-04 15:26:41,931 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)] === [2024-06-04 15:26:41,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:41,931 INFO L85 PathProgramCache]: Analyzing trace with hash -795019422, now seen corresponding path program 11 times [2024-06-04 15:26:41,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:41,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625079557] [2024-06-04 15:26:41,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:41,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:41,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:42,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:42,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:42,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625079557] [2024-06-04 15:26:42,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625079557] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:42,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:42,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:26:42,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139904435] [2024-06-04 15:26:42,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:42,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:26:42,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:42,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:26:42,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:26:42,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:26:42,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 145 transitions, 1220 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:42,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:42,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:26:42,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:42,996 INFO L124 PetriNetUnfolderBase]: 391/809 cut-off events. [2024-06-04 15:26:42,996 INFO L125 PetriNetUnfolderBase]: For 35640/35640 co-relation queries the response was YES. [2024-06-04 15:26:42,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4506 conditions, 809 events. 391/809 cut-off events. For 35640/35640 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4475 event pairs, 69 based on Foata normal form. 2/809 useless extension candidates. Maximal degree in co-relation 4419. Up to 714 conditions per place. [2024-06-04 15:26:43,001 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 137 selfloop transitions, 21 changer transitions 0/162 dead transitions. [2024-06-04 15:26:43,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 162 transitions, 1602 flow [2024-06-04 15:26:43,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:26:43,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:26:43,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 124 transitions. [2024-06-04 15:26:43,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175084175084175 [2024-06-04 15:26:43,002 INFO L175 Difference]: Start difference. First operand has 195 places, 145 transitions, 1220 flow. Second operand 9 states and 124 transitions. [2024-06-04 15:26:43,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 162 transitions, 1602 flow [2024-06-04 15:26:43,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 162 transitions, 1526 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-04 15:26:43,078 INFO L231 Difference]: Finished difference. Result has 195 places, 148 transitions, 1229 flow [2024-06-04 15:26:43,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1144, PETRI_DIFFERENCE_MINUEND_PLACES=185, 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=9, PETRI_FLOW=1229, PETRI_PLACES=195, PETRI_TRANSITIONS=148} [2024-06-04 15:26:43,079 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 163 predicate places. [2024-06-04 15:26:43,079 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 148 transitions, 1229 flow [2024-06-04 15:26:43,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:43,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:43,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:43,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-04 15:26:43,080 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)] === [2024-06-04 15:26:43,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:43,080 INFO L85 PathProgramCache]: Analyzing trace with hash -907439592, now seen corresponding path program 2 times [2024-06-04 15:26:43,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:43,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532210844] [2024-06-04 15:26:43,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:43,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:43,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:43,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:43,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:43,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532210844] [2024-06-04 15:26:43,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532210844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:43,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:43,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:26:43,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758297709] [2024-06-04 15:26:43,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:43,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:26:43,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:43,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:26:43,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:26:44,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:26:44,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 148 transitions, 1229 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:44,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:44,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:26:44,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:44,315 INFO L124 PetriNetUnfolderBase]: 397/817 cut-off events. [2024-06-04 15:26:44,315 INFO L125 PetriNetUnfolderBase]: For 34779/34779 co-relation queries the response was YES. [2024-06-04 15:26:44,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4547 conditions, 817 events. 397/817 cut-off events. For 34779/34779 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4511 event pairs, 69 based on Foata normal form. 1/816 useless extension candidates. Maximal degree in co-relation 4459. Up to 724 conditions per place. [2024-06-04 15:26:44,320 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 137 selfloop transitions, 25 changer transitions 0/166 dead transitions. [2024-06-04 15:26:44,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 166 transitions, 1651 flow [2024-06-04 15:26:44,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:26:44,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:26:44,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-04 15:26:44,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-04 15:26:44,321 INFO L175 Difference]: Start difference. First operand has 195 places, 148 transitions, 1229 flow. Second operand 11 states and 143 transitions. [2024-06-04 15:26:44,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 166 transitions, 1651 flow [2024-06-04 15:26:44,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 166 transitions, 1600 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-04 15:26:44,383 INFO L231 Difference]: Finished difference. Result has 201 places, 152 transitions, 1306 flow [2024-06-04 15:26:44,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1178, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1306, PETRI_PLACES=201, PETRI_TRANSITIONS=152} [2024-06-04 15:26:44,383 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 169 predicate places. [2024-06-04 15:26:44,383 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 152 transitions, 1306 flow [2024-06-04 15:26:44,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:44,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:44,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:44,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-04 15:26:44,384 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)] === [2024-06-04 15:26:44,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:44,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1259085342, now seen corresponding path program 12 times [2024-06-04 15:26:44,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:44,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007943096] [2024-06-04 15:26:44,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:44,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:44,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:45,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:45,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:45,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007943096] [2024-06-04 15:26:45,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007943096] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:45,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:45,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:26:45,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258482695] [2024-06-04 15:26:45,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:45,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:26:45,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:45,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:26:45,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:26:45,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:26:45,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 152 transitions, 1306 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:45,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:45,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:26:45,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:45,488 INFO L124 PetriNetUnfolderBase]: 394/812 cut-off events. [2024-06-04 15:26:45,488 INFO L125 PetriNetUnfolderBase]: For 34339/34339 co-relation queries the response was YES. [2024-06-04 15:26:45,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4459 conditions, 812 events. 394/812 cut-off events. For 34339/34339 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4481 event pairs, 73 based on Foata normal form. 2/812 useless extension candidates. Maximal degree in co-relation 4368. Up to 719 conditions per place. [2024-06-04 15:26:45,493 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 140 selfloop transitions, 23 changer transitions 0/167 dead transitions. [2024-06-04 15:26:45,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 167 transitions, 1670 flow [2024-06-04 15:26:45,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:26:45,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:26:45,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-04 15:26:45,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-04 15:26:45,494 INFO L175 Difference]: Start difference. First operand has 201 places, 152 transitions, 1306 flow. Second operand 10 states and 132 transitions. [2024-06-04 15:26:45,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 167 transitions, 1670 flow [2024-06-04 15:26:45,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 167 transitions, 1568 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-04 15:26:45,558 INFO L231 Difference]: Finished difference. Result has 203 places, 152 transitions, 1254 flow [2024-06-04 15:26:45,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1204, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1254, PETRI_PLACES=203, PETRI_TRANSITIONS=152} [2024-06-04 15:26:45,559 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 171 predicate places. [2024-06-04 15:26:45,559 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 152 transitions, 1254 flow [2024-06-04 15:26:45,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:45,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:45,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:45,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-04 15:26:45,559 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)] === [2024-06-04 15:26:45,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:45,559 INFO L85 PathProgramCache]: Analyzing trace with hash -2006681122, now seen corresponding path program 3 times [2024-06-04 15:26:45,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:45,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199444712] [2024-06-04 15:26:45,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:45,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:45,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:46,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:46,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:46,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199444712] [2024-06-04 15:26:46,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199444712] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:46,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:46,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:26:46,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280] [2024-06-04 15:26:46,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:46,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:26:46,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:46,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:26:46,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:26:46,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:26:46,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 152 transitions, 1254 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:46,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:46,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:26:46,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:46,702 INFO L124 PetriNetUnfolderBase]: 395/814 cut-off events. [2024-06-04 15:26:46,702 INFO L125 PetriNetUnfolderBase]: For 33093/33093 co-relation queries the response was YES. [2024-06-04 15:26:46,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4385 conditions, 814 events. 395/814 cut-off events. For 33093/33093 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4499 event pairs, 73 based on Foata normal form. 2/814 useless extension candidates. Maximal degree in co-relation 4293. Up to 718 conditions per place. [2024-06-04 15:26:46,708 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 140 selfloop transitions, 26 changer transitions 0/170 dead transitions. [2024-06-04 15:26:46,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 170 transitions, 1692 flow [2024-06-04 15:26:46,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:26:46,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:26:46,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-04 15:26:46,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39669421487603307 [2024-06-04 15:26:46,709 INFO L175 Difference]: Start difference. First operand has 203 places, 152 transitions, 1254 flow. Second operand 11 states and 144 transitions. [2024-06-04 15:26:46,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 170 transitions, 1692 flow [2024-06-04 15:26:46,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 170 transitions, 1571 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-04 15:26:46,766 INFO L231 Difference]: Finished difference. Result has 202 places, 154 transitions, 1248 flow [2024-06-04 15:26:46,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1133, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1248, PETRI_PLACES=202, PETRI_TRANSITIONS=154} [2024-06-04 15:26:46,767 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 170 predicate places. [2024-06-04 15:26:46,767 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 154 transitions, 1248 flow [2024-06-04 15:26:46,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:46,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:46,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:46,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-04 15:26:46,768 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)] === [2024-06-04 15:26:46,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:46,768 INFO L85 PathProgramCache]: Analyzing trace with hash 922439002, now seen corresponding path program 1 times [2024-06-04 15:26:46,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:46,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061757940] [2024-06-04 15:26:46,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:46,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:46,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:47,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:47,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:47,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061757940] [2024-06-04 15:26:47,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061757940] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:47,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:47,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:26:47,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376385385] [2024-06-04 15:26:47,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:47,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:26:47,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:47,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:26:47,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:26:47,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:26:47,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 154 transitions, 1248 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:47,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:47,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:26:47,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:48,053 INFO L124 PetriNetUnfolderBase]: 434/889 cut-off events. [2024-06-04 15:26:48,053 INFO L125 PetriNetUnfolderBase]: For 38578/38578 co-relation queries the response was YES. [2024-06-04 15:26:48,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4773 conditions, 889 events. 434/889 cut-off events. For 38578/38578 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5041 event pairs, 71 based on Foata normal form. 2/885 useless extension candidates. Maximal degree in co-relation 4682. Up to 744 conditions per place. [2024-06-04 15:26:48,058 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 147 selfloop transitions, 33 changer transitions 2/186 dead transitions. [2024-06-04 15:26:48,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 186 transitions, 1923 flow [2024-06-04 15:26:48,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:26:48,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:26:48,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-04 15:26:48,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40771349862258954 [2024-06-04 15:26:48,059 INFO L175 Difference]: Start difference. First operand has 202 places, 154 transitions, 1248 flow. Second operand 11 states and 148 transitions. [2024-06-04 15:26:48,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 186 transitions, 1923 flow [2024-06-04 15:26:48,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 186 transitions, 1814 flow, removed 24 selfloop flow, removed 11 redundant places. [2024-06-04 15:26:48,142 INFO L231 Difference]: Finished difference. Result has 206 places, 167 transitions, 1378 flow [2024-06-04 15:26:48,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1139, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1378, PETRI_PLACES=206, PETRI_TRANSITIONS=167} [2024-06-04 15:26:48,142 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 174 predicate places. [2024-06-04 15:26:48,142 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 167 transitions, 1378 flow [2024-06-04 15:26:48,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:48,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:48,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:48,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-04 15:26:48,143 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)] === [2024-06-04 15:26:48,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:48,143 INFO L85 PathProgramCache]: Analyzing trace with hash -349384776, now seen corresponding path program 2 times [2024-06-04 15:26:48,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:48,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690534458] [2024-06-04 15:26:48,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:48,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:48,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:48,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:48,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:48,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690534458] [2024-06-04 15:26:48,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690534458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:48,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:48,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:26:48,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25721913] [2024-06-04 15:26:48,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:48,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:26:48,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:48,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:26:48,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:26:49,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:26:49,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 167 transitions, 1378 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:49,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:49,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:26:49,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:49,453 INFO L124 PetriNetUnfolderBase]: 434/899 cut-off events. [2024-06-04 15:26:49,453 INFO L125 PetriNetUnfolderBase]: For 39455/39455 co-relation queries the response was YES. [2024-06-04 15:26:49,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4719 conditions, 899 events. 434/899 cut-off events. For 39455/39455 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 5139 event pairs, 85 based on Foata normal form. 4/901 useless extension candidates. Maximal degree in co-relation 4625. Up to 758 conditions per place. [2024-06-04 15:26:49,458 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 145 selfloop transitions, 33 changer transitions 2/184 dead transitions. [2024-06-04 15:26:49,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 184 transitions, 1848 flow [2024-06-04 15:26:49,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:26:49,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:26:49,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-04 15:26:49,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-04 15:26:49,459 INFO L175 Difference]: Start difference. First operand has 206 places, 167 transitions, 1378 flow. Second operand 10 states and 132 transitions. [2024-06-04 15:26:49,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 184 transitions, 1848 flow [2024-06-04 15:26:49,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 184 transitions, 1783 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-04 15:26:49,534 INFO L231 Difference]: Finished difference. Result has 213 places, 170 transitions, 1455 flow [2024-06-04 15:26:49,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1313, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1455, PETRI_PLACES=213, PETRI_TRANSITIONS=170} [2024-06-04 15:26:49,534 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 181 predicate places. [2024-06-04 15:26:49,534 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 170 transitions, 1455 flow [2024-06-04 15:26:49,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:49,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:49,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:49,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-04 15:26:49,535 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)] === [2024-06-04 15:26:49,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:49,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1932360156, now seen corresponding path program 3 times [2024-06-04 15:26:49,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:49,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974318435] [2024-06-04 15:26:49,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:49,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:49,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:50,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:50,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:50,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974318435] [2024-06-04 15:26:50,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974318435] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:50,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:50,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:26:50,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462496614] [2024-06-04 15:26:50,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:50,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:26:50,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:50,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:26:50,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:26:50,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:26:50,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 170 transitions, 1455 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:50,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:50,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:26:50,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:50,684 INFO L124 PetriNetUnfolderBase]: 436/909 cut-off events. [2024-06-04 15:26:50,684 INFO L125 PetriNetUnfolderBase]: For 36592/36592 co-relation queries the response was YES. [2024-06-04 15:26:50,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4826 conditions, 909 events. 436/909 cut-off events. For 36592/36592 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5247 event pairs, 85 based on Foata normal form. 2/909 useless extension candidates. Maximal degree in co-relation 4729. Up to 770 conditions per place. [2024-06-04 15:26:50,690 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 148 selfloop transitions, 33 changer transitions 0/185 dead transitions. [2024-06-04 15:26:50,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 185 transitions, 1878 flow [2024-06-04 15:26:50,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:26:50,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:26:50,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-04 15:26:50,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-04 15:26:50,691 INFO L175 Difference]: Start difference. First operand has 213 places, 170 transitions, 1455 flow. Second operand 10 states and 130 transitions. [2024-06-04 15:26:50,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 185 transitions, 1878 flow [2024-06-04 15:26:50,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 185 transitions, 1797 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-04 15:26:50,785 INFO L231 Difference]: Finished difference. Result has 218 places, 173 transitions, 1480 flow [2024-06-04 15:26:50,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1376, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1480, PETRI_PLACES=218, PETRI_TRANSITIONS=173} [2024-06-04 15:26:50,786 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 186 predicate places. [2024-06-04 15:26:50,786 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 173 transitions, 1480 flow [2024-06-04 15:26:50,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:50,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:50,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:50,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-04 15:26:50,786 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)] === [2024-06-04 15:26:50,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:50,786 INFO L85 PathProgramCache]: Analyzing trace with hash 118757514, now seen corresponding path program 4 times [2024-06-04 15:26:50,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:50,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084897981] [2024-06-04 15:26:50,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:50,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:50,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:51,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:51,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:51,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084897981] [2024-06-04 15:26:51,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084897981] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:51,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:51,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:26:51,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786732336] [2024-06-04 15:26:51,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:51,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:26:51,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:51,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:26:51,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:26:51,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:26:51,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 173 transitions, 1480 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:51,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:51,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:26:51,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:51,951 INFO L124 PetriNetUnfolderBase]: 447/930 cut-off events. [2024-06-04 15:26:51,951 INFO L125 PetriNetUnfolderBase]: For 41305/41305 co-relation queries the response was YES. [2024-06-04 15:26:51,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5042 conditions, 930 events. 447/930 cut-off events. For 41305/41305 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5382 event pairs, 80 based on Foata normal form. 2/930 useless extension candidates. Maximal degree in co-relation 4944. Up to 708 conditions per place. [2024-06-04 15:26:51,956 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 148 selfloop transitions, 38 changer transitions 0/190 dead transitions. [2024-06-04 15:26:51,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 190 transitions, 2042 flow [2024-06-04 15:26:51,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:26:51,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:26:51,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-04 15:26:51,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40606060606060607 [2024-06-04 15:26:51,957 INFO L175 Difference]: Start difference. First operand has 218 places, 173 transitions, 1480 flow. Second operand 10 states and 134 transitions. [2024-06-04 15:26:51,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 190 transitions, 2042 flow [2024-06-04 15:26:52,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 190 transitions, 1962 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-04 15:26:52,061 INFO L231 Difference]: Finished difference. Result has 220 places, 175 transitions, 1510 flow [2024-06-04 15:26:52,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1400, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1510, PETRI_PLACES=220, PETRI_TRANSITIONS=175} [2024-06-04 15:26:52,062 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 188 predicate places. [2024-06-04 15:26:52,062 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 175 transitions, 1510 flow [2024-06-04 15:26:52,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:52,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:52,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:52,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-04 15:26:52,062 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)] === [2024-06-04 15:26:52,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:52,063 INFO L85 PathProgramCache]: Analyzing trace with hash 2006907308, now seen corresponding path program 5 times [2024-06-04 15:26:52,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:52,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41760153] [2024-06-04 15:26:52,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:52,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:52,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:52,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:52,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:52,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41760153] [2024-06-04 15:26:52,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41760153] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:52,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:52,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:26:52,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218438105] [2024-06-04 15:26:52,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:52,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:26:52,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:52,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:26:52,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:26:52,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:26:52,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 175 transitions, 1510 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:52,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:52,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:26:52,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:53,225 INFO L124 PetriNetUnfolderBase]: 451/938 cut-off events. [2024-06-04 15:26:53,225 INFO L125 PetriNetUnfolderBase]: For 42444/42444 co-relation queries the response was YES. [2024-06-04 15:26:53,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5101 conditions, 938 events. 451/938 cut-off events. For 42444/42444 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5456 event pairs, 88 based on Foata normal form. 2/938 useless extension candidates. Maximal degree in co-relation 5003. Up to 799 conditions per place. [2024-06-04 15:26:53,232 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 151 selfloop transitions, 33 changer transitions 0/188 dead transitions. [2024-06-04 15:26:53,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 188 transitions, 1922 flow [2024-06-04 15:26:53,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:26:53,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:26:53,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-04 15:26:53,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-04 15:26:53,233 INFO L175 Difference]: Start difference. First operand has 220 places, 175 transitions, 1510 flow. Second operand 10 states and 130 transitions. [2024-06-04 15:26:53,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 188 transitions, 1922 flow [2024-06-04 15:26:53,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 188 transitions, 1863 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-04 15:26:53,333 INFO L231 Difference]: Finished difference. Result has 224 places, 176 transitions, 1540 flow [2024-06-04 15:26:53,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1453, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1540, PETRI_PLACES=224, PETRI_TRANSITIONS=176} [2024-06-04 15:26:53,333 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 192 predicate places. [2024-06-04 15:26:53,333 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 176 transitions, 1540 flow [2024-06-04 15:26:53,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:53,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:53,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:53,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-04 15:26:53,334 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)] === [2024-06-04 15:26:53,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:53,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1533825788, now seen corresponding path program 6 times [2024-06-04 15:26:53,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:53,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147889988] [2024-06-04 15:26:53,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:53,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:53,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:54,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:54,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:54,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147889988] [2024-06-04 15:26:54,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147889988] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:54,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:54,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:26:54,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528522522] [2024-06-04 15:26:54,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:54,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:26:54,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:54,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:26:54,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:26:54,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:26:54,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 176 transitions, 1540 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:54,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:54,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:26:54,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:54,488 INFO L124 PetriNetUnfolderBase]: 455/946 cut-off events. [2024-06-04 15:26:54,488 INFO L125 PetriNetUnfolderBase]: For 43458/43458 co-relation queries the response was YES. [2024-06-04 15:26:54,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5184 conditions, 946 events. 455/946 cut-off events. For 43458/43458 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5514 event pairs, 88 based on Foata normal form. 2/946 useless extension candidates. Maximal degree in co-relation 5084. Up to 783 conditions per place. [2024-06-04 15:26:54,495 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 151 selfloop transitions, 35 changer transitions 0/190 dead transitions. [2024-06-04 15:26:54,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 190 transitions, 1958 flow [2024-06-04 15:26:54,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:26:54,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:26:54,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-04 15:26:54,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-04 15:26:54,496 INFO L175 Difference]: Start difference. First operand has 224 places, 176 transitions, 1540 flow. Second operand 10 states and 132 transitions. [2024-06-04 15:26:54,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 190 transitions, 1958 flow [2024-06-04 15:26:54,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 190 transitions, 1885 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-04 15:26:54,591 INFO L231 Difference]: Finished difference. Result has 227 places, 177 transitions, 1559 flow [2024-06-04 15:26:54,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1467, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1559, PETRI_PLACES=227, PETRI_TRANSITIONS=177} [2024-06-04 15:26:54,591 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 195 predicate places. [2024-06-04 15:26:54,591 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 177 transitions, 1559 flow [2024-06-04 15:26:54,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:54,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:54,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:54,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-04 15:26:54,592 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)] === [2024-06-04 15:26:54,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:54,592 INFO L85 PathProgramCache]: Analyzing trace with hash 102098726, now seen corresponding path program 7 times [2024-06-04 15:26:54,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:54,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581034263] [2024-06-04 15:26:54,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:54,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:54,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:55,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:55,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:55,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581034263] [2024-06-04 15:26:55,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581034263] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:55,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:55,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:26:55,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835285669] [2024-06-04 15:26:55,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:55,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:26:55,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:55,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:26:55,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:26:55,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:26:55,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 177 transitions, 1559 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:55,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:55,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:26:55,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:55,876 INFO L124 PetriNetUnfolderBase]: 459/954 cut-off events. [2024-06-04 15:26:55,876 INFO L125 PetriNetUnfolderBase]: For 44629/44629 co-relation queries the response was YES. [2024-06-04 15:26:55,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5246 conditions, 954 events. 459/954 cut-off events. For 44629/44629 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5569 event pairs, 83 based on Foata normal form. 2/954 useless extension candidates. Maximal degree in co-relation 5145. Up to 824 conditions per place. [2024-06-04 15:26:55,883 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 152 selfloop transitions, 36 changer transitions 0/192 dead transitions. [2024-06-04 15:26:55,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 192 transitions, 1985 flow [2024-06-04 15:26:55,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:26:55,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:26:55,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-04 15:26:55,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396969696969697 [2024-06-04 15:26:55,885 INFO L175 Difference]: Start difference. First operand has 227 places, 177 transitions, 1559 flow. Second operand 10 states and 131 transitions. [2024-06-04 15:26:55,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 192 transitions, 1985 flow [2024-06-04 15:26:56,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 192 transitions, 1905 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-04 15:26:56,008 INFO L231 Difference]: Finished difference. Result has 229 places, 178 transitions, 1575 flow [2024-06-04 15:26:56,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1479, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1575, PETRI_PLACES=229, PETRI_TRANSITIONS=178} [2024-06-04 15:26:56,008 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 197 predicate places. [2024-06-04 15:26:56,008 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 178 transitions, 1575 flow [2024-06-04 15:26:56,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:56,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:56,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:56,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-04 15:26:56,009 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)] === [2024-06-04 15:26:56,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:56,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1704973632, now seen corresponding path program 8 times [2024-06-04 15:26:56,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:56,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740632520] [2024-06-04 15:26:56,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:56,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:56,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:56,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:56,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:56,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740632520] [2024-06-04 15:26:56,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740632520] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:56,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:56,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:26:56,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392024072] [2024-06-04 15:26:56,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:56,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:26:56,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:56,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:26:56,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:26:57,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:26:57,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 178 transitions, 1575 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:57,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:57,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:26:57,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:57,250 INFO L124 PetriNetUnfolderBase]: 467/968 cut-off events. [2024-06-04 15:26:57,250 INFO L125 PetriNetUnfolderBase]: For 45779/45779 co-relation queries the response was YES. [2024-06-04 15:26:57,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5347 conditions, 968 events. 467/968 cut-off events. For 45779/45779 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5688 event pairs, 81 based on Foata normal form. 2/964 useless extension candidates. Maximal degree in co-relation 5245. Up to 848 conditions per place. [2024-06-04 15:26:57,257 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 164 selfloop transitions, 25 changer transitions 0/193 dead transitions. [2024-06-04 15:26:57,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 193 transitions, 2022 flow [2024-06-04 15:26:57,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:26:57,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:26:57,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-04 15:26:57,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40606060606060607 [2024-06-04 15:26:57,258 INFO L175 Difference]: Start difference. First operand has 229 places, 178 transitions, 1575 flow. Second operand 10 states and 134 transitions. [2024-06-04 15:26:57,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 193 transitions, 2022 flow [2024-06-04 15:26:57,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 193 transitions, 1925 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-04 15:26:57,373 INFO L231 Difference]: Finished difference. Result has 232 places, 180 transitions, 1577 flow [2024-06-04 15:26:57,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1493, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1577, PETRI_PLACES=232, PETRI_TRANSITIONS=180} [2024-06-04 15:26:57,373 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 200 predicate places. [2024-06-04 15:26:57,374 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 180 transitions, 1577 flow [2024-06-04 15:26:57,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:57,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:57,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:57,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-04 15:26:57,374 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)] === [2024-06-04 15:26:57,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:57,375 INFO L85 PathProgramCache]: Analyzing trace with hash 97337126, now seen corresponding path program 9 times [2024-06-04 15:26:57,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:57,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013413005] [2024-06-04 15:26:57,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:57,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:57,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:58,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:58,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:58,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013413005] [2024-06-04 15:26:58,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013413005] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:58,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:58,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:26:58,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479988167] [2024-06-04 15:26:58,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:58,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:26:58,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:58,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:26:58,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:26:58,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:26:58,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 180 transitions, 1577 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:58,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:58,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:26:58,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:26:58,702 INFO L124 PetriNetUnfolderBase]: 478/991 cut-off events. [2024-06-04 15:26:58,702 INFO L125 PetriNetUnfolderBase]: For 51761/51761 co-relation queries the response was YES. [2024-06-04 15:26:58,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5582 conditions, 991 events. 478/991 cut-off events. For 51761/51761 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5845 event pairs, 84 based on Foata normal form. 2/991 useless extension candidates. Maximal degree in co-relation 5478. Up to 774 conditions per place. [2024-06-04 15:26:58,708 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 157 selfloop transitions, 38 changer transitions 0/199 dead transitions. [2024-06-04 15:26:58,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 199 transitions, 2185 flow [2024-06-04 15:26:58,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:26:58,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:26:58,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-04 15:26:58,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121212121212121 [2024-06-04 15:26:58,709 INFO L175 Difference]: Start difference. First operand has 232 places, 180 transitions, 1577 flow. Second operand 10 states and 136 transitions. [2024-06-04 15:26:58,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 199 transitions, 2185 flow [2024-06-04 15:26:58,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 199 transitions, 2125 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-04 15:26:58,835 INFO L231 Difference]: Finished difference. Result has 235 places, 182 transitions, 1639 flow [2024-06-04 15:26:58,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1517, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1639, PETRI_PLACES=235, PETRI_TRANSITIONS=182} [2024-06-04 15:26:58,836 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 203 predicate places. [2024-06-04 15:26:58,836 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 182 transitions, 1639 flow [2024-06-04 15:26:58,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:58,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:26:58,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:26:58,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-04 15:26:58,837 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)] === [2024-06-04 15:26:58,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:26:58,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1646765862, now seen corresponding path program 10 times [2024-06-04 15:26:58,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:26:58,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911273543] [2024-06-04 15:26:58,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:26:58,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:26:58,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:26:59,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:26:59,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:26:59,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911273543] [2024-06-04 15:26:59,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911273543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:26:59,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:26:59,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:26:59,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597841690] [2024-06-04 15:26:59,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:26:59,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:26:59,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:26:59,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:26:59,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:26:59,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:26:59,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 182 transitions, 1639 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:26:59,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:26:59,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:26:59,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:00,051 INFO L124 PetriNetUnfolderBase]: 486/1007 cut-off events. [2024-06-04 15:27:00,051 INFO L125 PetriNetUnfolderBase]: For 53369/53369 co-relation queries the response was YES. [2024-06-04 15:27:00,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5706 conditions, 1007 events. 486/1007 cut-off events. For 53369/53369 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 6002 event pairs, 98 based on Foata normal form. 2/1005 useless extension candidates. Maximal degree in co-relation 5601. Up to 886 conditions per place. [2024-06-04 15:27:00,058 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 178 selfloop transitions, 18 changer transitions 0/200 dead transitions. [2024-06-04 15:27:00,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 200 transitions, 2096 flow [2024-06-04 15:27:00,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:27:00,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:27:00,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-04 15:27:00,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3856749311294766 [2024-06-04 15:27:00,059 INFO L175 Difference]: Start difference. First operand has 235 places, 182 transitions, 1639 flow. Second operand 11 states and 140 transitions. [2024-06-04 15:27:00,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 200 transitions, 2096 flow [2024-06-04 15:27:00,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 200 transitions, 2030 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-04 15:27:00,191 INFO L231 Difference]: Finished difference. Result has 241 places, 184 transitions, 1644 flow [2024-06-04 15:27:00,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1573, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1644, PETRI_PLACES=241, PETRI_TRANSITIONS=184} [2024-06-04 15:27:00,192 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 209 predicate places. [2024-06-04 15:27:00,192 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 184 transitions, 1644 flow [2024-06-04 15:27:00,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:00,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:00,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:00,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-04 15:27:00,192 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)] === [2024-06-04 15:27:00,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:00,193 INFO L85 PathProgramCache]: Analyzing trace with hash -987065674, now seen corresponding path program 1 times [2024-06-04 15:27:00,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:00,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977952143] [2024-06-04 15:27:00,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:00,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:00,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:01,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:01,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:01,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977952143] [2024-06-04 15:27:01,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977952143] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:01,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:01,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:27:01,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492677664] [2024-06-04 15:27:01,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:01,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:27:01,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:01,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:27:01,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:27:01,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:27:01,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 184 transitions, 1644 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:01,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:01,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:27:01,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:02,007 INFO L124 PetriNetUnfolderBase]: 489/1012 cut-off events. [2024-06-04 15:27:02,007 INFO L125 PetriNetUnfolderBase]: For 52306/52306 co-relation queries the response was YES. [2024-06-04 15:27:02,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5765 conditions, 1012 events. 489/1012 cut-off events. For 52306/52306 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5995 event pairs, 100 based on Foata normal form. 1/1011 useless extension candidates. Maximal degree in co-relation 5657. Up to 864 conditions per place. [2024-06-04 15:27:02,014 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 159 selfloop transitions, 35 changer transitions 3/201 dead transitions. [2024-06-04 15:27:02,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 201 transitions, 2171 flow [2024-06-04 15:27:02,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:27:02,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:27:02,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-04 15:27:02,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3838383838383838 [2024-06-04 15:27:02,015 INFO L175 Difference]: Start difference. First operand has 241 places, 184 transitions, 1644 flow. Second operand 12 states and 152 transitions. [2024-06-04 15:27:02,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 201 transitions, 2171 flow [2024-06-04 15:27:02,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 201 transitions, 2116 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-04 15:27:02,145 INFO L231 Difference]: Finished difference. Result has 246 places, 186 transitions, 1731 flow [2024-06-04 15:27:02,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1589, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1731, PETRI_PLACES=246, PETRI_TRANSITIONS=186} [2024-06-04 15:27:02,146 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 214 predicate places. [2024-06-04 15:27:02,146 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 186 transitions, 1731 flow [2024-06-04 15:27:02,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:02,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:02,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:02,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-04 15:27:02,146 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)] === [2024-06-04 15:27:02,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:02,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1796958902, now seen corresponding path program 2 times [2024-06-04 15:27:02,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:02,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156975581] [2024-06-04 15:27:02,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:02,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:02,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:03,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:03,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:03,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156975581] [2024-06-04 15:27:03,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156975581] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:03,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:03,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:27:03,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765205552] [2024-06-04 15:27:03,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:03,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:27:03,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:03,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:27:03,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:27:03,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:27:03,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 186 transitions, 1731 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:03,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:03,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:27:03,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:03,671 INFO L124 PetriNetUnfolderBase]: 480/993 cut-off events. [2024-06-04 15:27:03,671 INFO L125 PetriNetUnfolderBase]: For 51448/51448 co-relation queries the response was YES. [2024-06-04 15:27:03,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5724 conditions, 993 events. 480/993 cut-off events. For 51448/51448 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5849 event pairs, 84 based on Foata normal form. 1/992 useless extension candidates. Maximal degree in co-relation 5614. Up to 852 conditions per place. [2024-06-04 15:27:03,679 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 155 selfloop transitions, 45 changer transitions 0/204 dead transitions. [2024-06-04 15:27:03,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 204 transitions, 2255 flow [2024-06-04 15:27:03,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:27:03,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:27:03,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-04 15:27:03,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39118457300275483 [2024-06-04 15:27:03,680 INFO L175 Difference]: Start difference. First operand has 246 places, 186 transitions, 1731 flow. Second operand 11 states and 142 transitions. [2024-06-04 15:27:03,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 204 transitions, 2255 flow [2024-06-04 15:27:03,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 204 transitions, 2124 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-04 15:27:03,829 INFO L231 Difference]: Finished difference. Result has 248 places, 190 transitions, 1804 flow [2024-06-04 15:27:03,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1600, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1804, PETRI_PLACES=248, PETRI_TRANSITIONS=190} [2024-06-04 15:27:03,830 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 216 predicate places. [2024-06-04 15:27:03,830 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 190 transitions, 1804 flow [2024-06-04 15:27:03,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:03,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:03,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:03,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-04 15:27:03,831 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)] === [2024-06-04 15:27:03,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:03,831 INFO L85 PathProgramCache]: Analyzing trace with hash 776372808, now seen corresponding path program 11 times [2024-06-04 15:27:03,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:03,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617302811] [2024-06-04 15:27:03,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:03,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:03,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:04,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:04,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:04,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617302811] [2024-06-04 15:27:04,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617302811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:04,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:04,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:27:04,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115330498] [2024-06-04 15:27:04,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:04,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:27:04,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:04,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:27:04,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:27:04,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:27:04,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 190 transitions, 1804 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:04,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:04,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:27:04,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:05,019 INFO L124 PetriNetUnfolderBase]: 487/1000 cut-off events. [2024-06-04 15:27:05,019 INFO L125 PetriNetUnfolderBase]: For 57264/57264 co-relation queries the response was YES. [2024-06-04 15:27:05,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5818 conditions, 1000 events. 487/1000 cut-off events. For 57264/57264 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5897 event pairs, 93 based on Foata normal form. 2/996 useless extension candidates. Maximal degree in co-relation 5706. Up to 810 conditions per place. [2024-06-04 15:27:05,027 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 155 selfloop transitions, 44 changer transitions 2/205 dead transitions. [2024-06-04 15:27:05,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 205 transitions, 2345 flow [2024-06-04 15:27:05,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:27:05,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:27:05,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-04 15:27:05,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-04 15:27:05,028 INFO L175 Difference]: Start difference. First operand has 248 places, 190 transitions, 1804 flow. Second operand 10 states and 135 transitions. [2024-06-04 15:27:05,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 205 transitions, 2345 flow [2024-06-04 15:27:05,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 205 transitions, 2193 flow, removed 39 selfloop flow, removed 8 redundant places. [2024-06-04 15:27:05,178 INFO L231 Difference]: Finished difference. Result has 251 places, 193 transitions, 1824 flow [2024-06-04 15:27:05,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1652, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1824, PETRI_PLACES=251, PETRI_TRANSITIONS=193} [2024-06-04 15:27:05,179 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 219 predicate places. [2024-06-04 15:27:05,179 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 193 transitions, 1824 flow [2024-06-04 15:27:05,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:05,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:05,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:05,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-04 15:27:05,179 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)] === [2024-06-04 15:27:05,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:05,180 INFO L85 PathProgramCache]: Analyzing trace with hash -947037716, now seen corresponding path program 12 times [2024-06-04 15:27:05,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:05,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833231610] [2024-06-04 15:27:05,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:05,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:05,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:05,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:05,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:05,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833231610] [2024-06-04 15:27:05,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833231610] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:05,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:05,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:27:05,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260231882] [2024-06-04 15:27:05,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:05,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:27:05,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:05,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:27:05,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:27:06,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:27:06,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 193 transitions, 1824 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:06,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:06,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:27:06,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:06,318 INFO L124 PetriNetUnfolderBase]: 492/1011 cut-off events. [2024-06-04 15:27:06,318 INFO L125 PetriNetUnfolderBase]: For 59294/59294 co-relation queries the response was YES. [2024-06-04 15:27:06,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5885 conditions, 1011 events. 492/1011 cut-off events. For 59294/59294 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5998 event pairs, 95 based on Foata normal form. 2/1007 useless extension candidates. Maximal degree in co-relation 5771. Up to 820 conditions per place. [2024-06-04 15:27:06,326 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 157 selfloop transitions, 44 changer transitions 2/207 dead transitions. [2024-06-04 15:27:06,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 207 transitions, 2339 flow [2024-06-04 15:27:06,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:27:06,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:27:06,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-04 15:27:06,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-04 15:27:06,327 INFO L175 Difference]: Start difference. First operand has 251 places, 193 transitions, 1824 flow. Second operand 10 states and 135 transitions. [2024-06-04 15:27:06,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 207 transitions, 2339 flow [2024-06-04 15:27:06,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 207 transitions, 2191 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-04 15:27:06,500 INFO L231 Difference]: Finished difference. Result has 254 places, 195 transitions, 1807 flow [2024-06-04 15:27:06,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1680, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1807, PETRI_PLACES=254, PETRI_TRANSITIONS=195} [2024-06-04 15:27:06,500 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 222 predicate places. [2024-06-04 15:27:06,500 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 195 transitions, 1807 flow [2024-06-04 15:27:06,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:06,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:06,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:06,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-04 15:27:06,501 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)] === [2024-06-04 15:27:06,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:06,501 INFO L85 PathProgramCache]: Analyzing trace with hash 769939068, now seen corresponding path program 13 times [2024-06-04 15:27:06,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:06,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788548250] [2024-06-04 15:27:06,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:06,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:06,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:07,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:07,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:07,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788548250] [2024-06-04 15:27:07,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788548250] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:07,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:07,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:27:07,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052776557] [2024-06-04 15:27:07,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:07,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:27:07,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:07,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:27:07,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:27:07,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:27:07,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 195 transitions, 1807 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:07,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:07,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:27:07,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:07,711 INFO L124 PetriNetUnfolderBase]: 494/1019 cut-off events. [2024-06-04 15:27:07,711 INFO L125 PetriNetUnfolderBase]: For 60529/60529 co-relation queries the response was YES. [2024-06-04 15:27:07,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5889 conditions, 1019 events. 494/1019 cut-off events. For 60529/60529 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 6099 event pairs, 93 based on Foata normal form. 2/1015 useless extension candidates. Maximal degree in co-relation 5774. Up to 806 conditions per place. [2024-06-04 15:27:07,717 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 157 selfloop transitions, 46 changer transitions 1/208 dead transitions. [2024-06-04 15:27:07,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 208 transitions, 2309 flow [2024-06-04 15:27:07,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:27:07,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:27:07,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-04 15:27:07,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121212121212121 [2024-06-04 15:27:07,718 INFO L175 Difference]: Start difference. First operand has 254 places, 195 transitions, 1807 flow. Second operand 10 states and 136 transitions. [2024-06-04 15:27:07,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 208 transitions, 2309 flow [2024-06-04 15:27:07,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 208 transitions, 2208 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-04 15:27:07,891 INFO L231 Difference]: Finished difference. Result has 258 places, 196 transitions, 1832 flow [2024-06-04 15:27:07,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1706, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1832, PETRI_PLACES=258, PETRI_TRANSITIONS=196} [2024-06-04 15:27:07,891 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 226 predicate places. [2024-06-04 15:27:07,891 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 196 transitions, 1832 flow [2024-06-04 15:27:07,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:07,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:07,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:07,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-04 15:27:07,892 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)] === [2024-06-04 15:27:07,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:07,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1486842568, now seen corresponding path program 14 times [2024-06-04 15:27:07,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:07,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294089994] [2024-06-04 15:27:07,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:07,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:07,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:08,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:08,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:08,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294089994] [2024-06-04 15:27:08,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294089994] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:08,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:08,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:27:08,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142657045] [2024-06-04 15:27:08,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:08,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:27:08,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:08,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:27:08,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:27:08,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:27:08,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 196 transitions, 1832 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:08,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:08,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:27:08,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:09,146 INFO L124 PetriNetUnfolderBase]: 498/1027 cut-off events. [2024-06-04 15:27:09,146 INFO L125 PetriNetUnfolderBase]: For 62085/62085 co-relation queries the response was YES. [2024-06-04 15:27:09,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5959 conditions, 1027 events. 498/1027 cut-off events. For 62085/62085 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 6146 event pairs, 87 based on Foata normal form. 2/1019 useless extension candidates. Maximal degree in co-relation 5843. Up to 791 conditions per place. [2024-06-04 15:27:09,153 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 141 selfloop transitions, 62 changer transitions 4/211 dead transitions. [2024-06-04 15:27:09,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 211 transitions, 2369 flow [2024-06-04 15:27:09,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:27:09,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:27:09,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-04 15:27:09,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-04 15:27:09,154 INFO L175 Difference]: Start difference. First operand has 258 places, 196 transitions, 1832 flow. Second operand 10 states and 135 transitions. [2024-06-04 15:27:09,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 211 transitions, 2369 flow [2024-06-04 15:27:09,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 211 transitions, 2247 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-04 15:27:09,321 INFO L231 Difference]: Finished difference. Result has 260 places, 197 transitions, 1876 flow [2024-06-04 15:27:09,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1716, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1876, PETRI_PLACES=260, PETRI_TRANSITIONS=197} [2024-06-04 15:27:09,322 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 228 predicate places. [2024-06-04 15:27:09,322 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 197 transitions, 1876 flow [2024-06-04 15:27:09,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:09,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:09,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:09,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-04 15:27:09,322 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)] === [2024-06-04 15:27:09,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:09,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1486664938, now seen corresponding path program 15 times [2024-06-04 15:27:09,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:09,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145644673] [2024-06-04 15:27:09,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:09,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:09,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:10,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:10,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:10,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145644673] [2024-06-04 15:27:10,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145644673] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:10,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:10,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:27:10,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855715662] [2024-06-04 15:27:10,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:10,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:27:10,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:10,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:27:10,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:27:10,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:27:10,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 197 transitions, 1876 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:10,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:10,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:27:10,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:10,835 INFO L124 PetriNetUnfolderBase]: 460/941 cut-off events. [2024-06-04 15:27:10,836 INFO L125 PetriNetUnfolderBase]: For 59643/59643 co-relation queries the response was YES. [2024-06-04 15:27:10,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5420 conditions, 941 events. 460/941 cut-off events. For 59643/59643 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5521 event pairs, 75 based on Foata normal form. 2/933 useless extension candidates. Maximal degree in co-relation 5303. Up to 695 conditions per place. [2024-06-04 15:27:10,842 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 139 selfloop transitions, 66 changer transitions 0/209 dead transitions. [2024-06-04 15:27:10,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 209 transitions, 2342 flow [2024-06-04 15:27:10,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:27:10,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:27:10,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-04 15:27:10,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4022038567493113 [2024-06-04 15:27:10,843 INFO L175 Difference]: Start difference. First operand has 260 places, 197 transitions, 1876 flow. Second operand 11 states and 146 transitions. [2024-06-04 15:27:10,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 209 transitions, 2342 flow [2024-06-04 15:27:10,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 209 transitions, 2132 flow, removed 46 selfloop flow, removed 9 redundant places. [2024-06-04 15:27:10,994 INFO L231 Difference]: Finished difference. Result has 262 places, 198 transitions, 1836 flow [2024-06-04 15:27:11,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1666, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1836, PETRI_PLACES=262, PETRI_TRANSITIONS=198} [2024-06-04 15:27:11,003 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 230 predicate places. [2024-06-04 15:27:11,003 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 198 transitions, 1836 flow [2024-06-04 15:27:11,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:11,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:11,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:11,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-04 15:27:11,004 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)] === [2024-06-04 15:27:11,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:11,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1118033096, now seen corresponding path program 16 times [2024-06-04 15:27:11,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:11,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730302029] [2024-06-04 15:27:11,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:11,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:11,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:11,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:11,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:11,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730302029] [2024-06-04 15:27:11,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730302029] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:11,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:11,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:27:11,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650258063] [2024-06-04 15:27:11,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:11,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:27:11,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:11,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:27:11,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:27:11,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:27:11,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 198 transitions, 1836 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:11,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:11,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:27:11,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:12,165 INFO L124 PetriNetUnfolderBase]: 471/964 cut-off events. [2024-06-04 15:27:12,166 INFO L125 PetriNetUnfolderBase]: For 66914/66914 co-relation queries the response was YES. [2024-06-04 15:27:12,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5619 conditions, 964 events. 471/964 cut-off events. For 66914/66914 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5680 event pairs, 84 based on Foata normal form. 2/960 useless extension candidates. Maximal degree in co-relation 5505. Up to 690 conditions per place. [2024-06-04 15:27:12,171 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 157 selfloop transitions, 52 changer transitions 0/213 dead transitions. [2024-06-04 15:27:12,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 213 transitions, 2506 flow [2024-06-04 15:27:12,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:27:12,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:27:12,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-04 15:27:12,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121212121212121 [2024-06-04 15:27:12,172 INFO L175 Difference]: Start difference. First operand has 262 places, 198 transitions, 1836 flow. Second operand 10 states and 136 transitions. [2024-06-04 15:27:12,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 213 transitions, 2506 flow [2024-06-04 15:27:12,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 213 transitions, 2346 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-04 15:27:12,314 INFO L231 Difference]: Finished difference. Result has 263 places, 200 transitions, 1854 flow [2024-06-04 15:27:12,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1676, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1854, PETRI_PLACES=263, PETRI_TRANSITIONS=200} [2024-06-04 15:27:12,315 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 231 predicate places. [2024-06-04 15:27:12,315 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 200 transitions, 1854 flow [2024-06-04 15:27:12,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:12,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:12,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:12,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-04 15:27:12,315 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)] === [2024-06-04 15:27:12,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:12,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1850650552, now seen corresponding path program 17 times [2024-06-04 15:27:12,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:12,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553188296] [2024-06-04 15:27:12,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:12,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:12,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:13,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:13,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:13,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553188296] [2024-06-04 15:27:13,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553188296] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:13,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:13,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:27:13,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176361467] [2024-06-04 15:27:13,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:13,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:27:13,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:13,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:27:13,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:27:13,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:27:13,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 200 transitions, 1854 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:13,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:13,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:27:13,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:13,435 INFO L124 PetriNetUnfolderBase]: 476/975 cut-off events. [2024-06-04 15:27:13,436 INFO L125 PetriNetUnfolderBase]: For 68689/68689 co-relation queries the response was YES. [2024-06-04 15:27:13,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5679 conditions, 975 events. 476/975 cut-off events. For 68689/68689 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5781 event pairs, 90 based on Foata normal form. 2/971 useless extension candidates. Maximal degree in co-relation 5564. Up to 783 conditions per place. [2024-06-04 15:27:13,443 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 161 selfloop transitions, 48 changer transitions 0/213 dead transitions. [2024-06-04 15:27:13,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 213 transitions, 2351 flow [2024-06-04 15:27:13,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:27:13,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:27:13,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-04 15:27:13,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403030303030303 [2024-06-04 15:27:13,444 INFO L175 Difference]: Start difference. First operand has 263 places, 200 transitions, 1854 flow. Second operand 10 states and 133 transitions. [2024-06-04 15:27:13,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 213 transitions, 2351 flow [2024-06-04 15:27:13,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 213 transitions, 2243 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-04 15:27:13,610 INFO L231 Difference]: Finished difference. Result has 268 places, 203 transitions, 1912 flow [2024-06-04 15:27:13,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1757, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1912, PETRI_PLACES=268, PETRI_TRANSITIONS=203} [2024-06-04 15:27:13,610 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 236 predicate places. [2024-06-04 15:27:13,610 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 203 transitions, 1912 flow [2024-06-04 15:27:13,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:13,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:13,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:13,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-04 15:27:13,611 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)] === [2024-06-04 15:27:13,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:13,611 INFO L85 PathProgramCache]: Analyzing trace with hash 707098024, now seen corresponding path program 18 times [2024-06-04 15:27:13,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:13,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202452363] [2024-06-04 15:27:13,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:13,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:13,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:14,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:14,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:14,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202452363] [2024-06-04 15:27:14,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202452363] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:14,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:14,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:27:14,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196694012] [2024-06-04 15:27:14,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:14,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:27:14,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:14,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:27:14,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:27:14,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:27:14,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 203 transitions, 1912 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:14,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:14,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:27:14,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:14,744 INFO L124 PetriNetUnfolderBase]: 480/983 cut-off events. [2024-06-04 15:27:14,744 INFO L125 PetriNetUnfolderBase]: For 69736/69736 co-relation queries the response was YES. [2024-06-04 15:27:14,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5757 conditions, 983 events. 480/983 cut-off events. For 69736/69736 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5837 event pairs, 92 based on Foata normal form. 2/979 useless extension candidates. Maximal degree in co-relation 5639. Up to 791 conditions per place. [2024-06-04 15:27:14,751 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 161 selfloop transitions, 49 changer transitions 0/214 dead transitions. [2024-06-04 15:27:14,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 214 transitions, 2384 flow [2024-06-04 15:27:14,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:27:14,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:27:14,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-04 15:27:14,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396969696969697 [2024-06-04 15:27:14,752 INFO L175 Difference]: Start difference. First operand has 268 places, 203 transitions, 1912 flow. Second operand 10 states and 131 transitions. [2024-06-04 15:27:14,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 214 transitions, 2384 flow [2024-06-04 15:27:14,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 214 transitions, 2262 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-04 15:27:14,906 INFO L231 Difference]: Finished difference. Result has 271 places, 204 transitions, 1924 flow [2024-06-04 15:27:14,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1790, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1924, PETRI_PLACES=271, PETRI_TRANSITIONS=204} [2024-06-04 15:27:14,906 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 239 predicate places. [2024-06-04 15:27:14,906 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 204 transitions, 1924 flow [2024-06-04 15:27:14,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:14,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:14,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:14,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-04 15:27:14,907 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)] === [2024-06-04 15:27:14,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:14,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1180691716, now seen corresponding path program 19 times [2024-06-04 15:27:14,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:14,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562603939] [2024-06-04 15:27:14,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:14,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:14,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:15,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:15,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:15,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562603939] [2024-06-04 15:27:15,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562603939] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:15,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:15,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:27:15,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130499667] [2024-06-04 15:27:15,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:15,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:27:15,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:15,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:27:15,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:27:15,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:27:15,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 204 transitions, 1924 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:15,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:15,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:27:15,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:16,059 INFO L124 PetriNetUnfolderBase]: 484/991 cut-off events. [2024-06-04 15:27:16,059 INFO L125 PetriNetUnfolderBase]: For 71589/71589 co-relation queries the response was YES. [2024-06-04 15:27:16,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5815 conditions, 991 events. 484/991 cut-off events. For 71589/71589 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5885 event pairs, 90 based on Foata normal form. 2/987 useless extension candidates. Maximal degree in co-relation 5696. Up to 770 conditions per place. [2024-06-04 15:27:16,068 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 161 selfloop transitions, 52 changer transitions 0/217 dead transitions. [2024-06-04 15:27:16,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 217 transitions, 2570 flow [2024-06-04 15:27:16,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:27:16,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:27:16,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-04 15:27:16,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40606060606060607 [2024-06-04 15:27:16,069 INFO L175 Difference]: Start difference. First operand has 271 places, 204 transitions, 1924 flow. Second operand 10 states and 134 transitions. [2024-06-04 15:27:16,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 217 transitions, 2570 flow [2024-06-04 15:27:16,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 217 transitions, 2432 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-04 15:27:16,226 INFO L231 Difference]: Finished difference. Result has 273 places, 205 transitions, 1926 flow [2024-06-04 15:27:16,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1786, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1926, PETRI_PLACES=273, PETRI_TRANSITIONS=205} [2024-06-04 15:27:16,226 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 241 predicate places. [2024-06-04 15:27:16,226 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 205 transitions, 1926 flow [2024-06-04 15:27:16,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:16,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:16,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:16,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-04 15:27:16,227 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)] === [2024-06-04 15:27:16,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:16,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1849544810, now seen corresponding path program 20 times [2024-06-04 15:27:16,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:16,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701989017] [2024-06-04 15:27:16,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:16,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:16,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:17,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:17,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:17,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701989017] [2024-06-04 15:27:17,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701989017] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:17,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:17,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:27:17,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105010078] [2024-06-04 15:27:17,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:17,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:27:17,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:17,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:27:17,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:27:17,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:27:17,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 205 transitions, 1926 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:17,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:17,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:27:17,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:17,372 INFO L124 PetriNetUnfolderBase]: 481/984 cut-off events. [2024-06-04 15:27:17,372 INFO L125 PetriNetUnfolderBase]: For 66233/66233 co-relation queries the response was YES. [2024-06-04 15:27:17,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5575 conditions, 984 events. 481/984 cut-off events. For 66233/66233 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5861 event pairs, 81 based on Foata normal form. 2/976 useless extension candidates. Maximal degree in co-relation 5457. Up to 751 conditions per place. [2024-06-04 15:27:17,379 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 135 selfloop transitions, 76 changer transitions 0/215 dead transitions. [2024-06-04 15:27:17,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 215 transitions, 2370 flow [2024-06-04 15:27:17,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:27:17,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:27:17,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-04 15:27:17,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-04 15:27:17,380 INFO L175 Difference]: Start difference. First operand has 273 places, 205 transitions, 1926 flow. Second operand 10 states and 132 transitions. [2024-06-04 15:27:17,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 215 transitions, 2370 flow [2024-06-04 15:27:17,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 215 transitions, 2204 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-04 15:27:17,516 INFO L231 Difference]: Finished difference. Result has 275 places, 205 transitions, 1916 flow [2024-06-04 15:27:17,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1760, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1916, PETRI_PLACES=275, PETRI_TRANSITIONS=205} [2024-06-04 15:27:17,516 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 243 predicate places. [2024-06-04 15:27:17,516 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 205 transitions, 1916 flow [2024-06-04 15:27:17,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:17,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:17,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:17,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-04 15:27:17,517 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)] === [2024-06-04 15:27:17,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:17,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1603908938, now seen corresponding path program 3 times [2024-06-04 15:27:17,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:17,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317344225] [2024-06-04 15:27:17,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:17,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:17,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:18,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:18,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:18,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317344225] [2024-06-04 15:27:18,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317344225] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:18,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:18,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:27:18,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738028695] [2024-06-04 15:27:18,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:18,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:27:18,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:18,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:27:18,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:27:18,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:27:18,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 205 transitions, 1916 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:18,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:18,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:27:18,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:19,091 INFO L124 PetriNetUnfolderBase]: 484/993 cut-off events. [2024-06-04 15:27:19,092 INFO L125 PetriNetUnfolderBase]: For 63931/63931 co-relation queries the response was YES. [2024-06-04 15:27:19,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5608 conditions, 993 events. 484/993 cut-off events. For 63931/63931 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5934 event pairs, 91 based on Foata normal form. 1/988 useless extension candidates. Maximal degree in co-relation 5489. Up to 748 conditions per place. [2024-06-04 15:27:19,100 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 160 selfloop transitions, 55 changer transitions 0/219 dead transitions. [2024-06-04 15:27:19,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 219 transitions, 2666 flow [2024-06-04 15:27:19,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:27:19,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:27:19,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 141 transitions. [2024-06-04 15:27:19,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42727272727272725 [2024-06-04 15:27:19,101 INFO L175 Difference]: Start difference. First operand has 275 places, 205 transitions, 1916 flow. Second operand 10 states and 141 transitions. [2024-06-04 15:27:19,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 219 transitions, 2666 flow [2024-06-04 15:27:19,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 219 transitions, 2483 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-04 15:27:19,237 INFO L231 Difference]: Finished difference. Result has 274 places, 209 transitions, 1984 flow [2024-06-04 15:27:19,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1733, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1984, PETRI_PLACES=274, PETRI_TRANSITIONS=209} [2024-06-04 15:27:19,238 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 242 predicate places. [2024-06-04 15:27:19,238 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 209 transitions, 1984 flow [2024-06-04 15:27:19,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:19,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:19,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:19,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-04 15:27:19,239 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)] === [2024-06-04 15:27:19,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:19,239 INFO L85 PathProgramCache]: Analyzing trace with hash -944035112, now seen corresponding path program 4 times [2024-06-04 15:27:19,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:19,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834518287] [2024-06-04 15:27:19,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:19,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:19,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:20,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:20,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:20,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834518287] [2024-06-04 15:27:20,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834518287] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:20,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:20,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:27:20,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869905498] [2024-06-04 15:27:20,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:20,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:27:20,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:20,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:27:20,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:27:20,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:27:20,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 209 transitions, 1984 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:20,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:20,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:27:20,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:20,900 INFO L124 PetriNetUnfolderBase]: 487/1000 cut-off events. [2024-06-04 15:27:20,900 INFO L125 PetriNetUnfolderBase]: For 66212/66212 co-relation queries the response was YES. [2024-06-04 15:27:20,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5629 conditions, 1000 events. 487/1000 cut-off events. For 66212/66212 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5972 event pairs, 91 based on Foata normal form. 1/995 useless extension candidates. Maximal degree in co-relation 5511. Up to 752 conditions per place. [2024-06-04 15:27:20,907 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 158 selfloop transitions, 59 changer transitions 0/221 dead transitions. [2024-06-04 15:27:20,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 221 transitions, 2678 flow [2024-06-04 15:27:20,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:27:20,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:27:20,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 140 transitions. [2024-06-04 15:27:20,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-04 15:27:20,908 INFO L175 Difference]: Start difference. First operand has 274 places, 209 transitions, 1984 flow. Second operand 10 states and 140 transitions. [2024-06-04 15:27:20,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 221 transitions, 2678 flow [2024-06-04 15:27:21,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 221 transitions, 2566 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-04 15:27:21,043 INFO L231 Difference]: Finished difference. Result has 278 places, 211 transitions, 2065 flow [2024-06-04 15:27:21,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1872, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2065, PETRI_PLACES=278, PETRI_TRANSITIONS=211} [2024-06-04 15:27:21,044 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 246 predicate places. [2024-06-04 15:27:21,044 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 211 transitions, 2065 flow [2024-06-04 15:27:21,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:21,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:21,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:21,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-04 15:27:21,044 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)] === [2024-06-04 15:27:21,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:21,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1840966986, now seen corresponding path program 5 times [2024-06-04 15:27:21,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:21,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345310867] [2024-06-04 15:27:21,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:21,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:21,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:22,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:22,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:22,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345310867] [2024-06-04 15:27:22,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345310867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:22,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:22,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:27:22,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156973448] [2024-06-04 15:27:22,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:22,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:27:22,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:22,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:27:22,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:27:22,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:27:22,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 211 transitions, 2065 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:22,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:22,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:27:22,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:22,660 INFO L124 PetriNetUnfolderBase]: 490/1007 cut-off events. [2024-06-04 15:27:22,660 INFO L125 PetriNetUnfolderBase]: For 67972/67972 co-relation queries the response was YES. [2024-06-04 15:27:22,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5774 conditions, 1007 events. 490/1007 cut-off events. For 67972/67972 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6045 event pairs, 91 based on Foata normal form. 1/1002 useless extension candidates. Maximal degree in co-relation 5654. Up to 756 conditions per place. [2024-06-04 15:27:22,670 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 152 selfloop transitions, 67 changer transitions 0/223 dead transitions. [2024-06-04 15:27:22,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 223 transitions, 2769 flow [2024-06-04 15:27:22,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:27:22,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:27:22,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 139 transitions. [2024-06-04 15:27:22,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4212121212121212 [2024-06-04 15:27:22,671 INFO L175 Difference]: Start difference. First operand has 278 places, 211 transitions, 2065 flow. Second operand 10 states and 139 transitions. [2024-06-04 15:27:22,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 223 transitions, 2769 flow [2024-06-04 15:27:22,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 223 transitions, 2581 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-04 15:27:22,818 INFO L231 Difference]: Finished difference. Result has 280 places, 213 transitions, 2090 flow [2024-06-04 15:27:22,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1881, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2090, PETRI_PLACES=280, PETRI_TRANSITIONS=213} [2024-06-04 15:27:22,818 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 248 predicate places. [2024-06-04 15:27:22,819 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 213 transitions, 2090 flow [2024-06-04 15:27:22,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:22,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:22,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:22,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-04 15:27:22,819 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)] === [2024-06-04 15:27:22,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:22,819 INFO L85 PathProgramCache]: Analyzing trace with hash -363926858, now seen corresponding path program 6 times [2024-06-04 15:27:22,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:22,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519133586] [2024-06-04 15:27:22,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:22,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:22,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:23,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:23,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:23,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519133586] [2024-06-04 15:27:23,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519133586] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:23,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:23,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:27:23,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852689122] [2024-06-04 15:27:23,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:23,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:27:23,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:23,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:27:23,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:27:23,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:27:23,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 213 transitions, 2090 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:23,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:23,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:27:23,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:24,210 INFO L124 PetriNetUnfolderBase]: 493/1015 cut-off events. [2024-06-04 15:27:24,211 INFO L125 PetriNetUnfolderBase]: For 69499/69499 co-relation queries the response was YES. [2024-06-04 15:27:24,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5835 conditions, 1015 events. 493/1015 cut-off events. For 69499/69499 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6105 event pairs, 127 based on Foata normal form. 1/1014 useless extension candidates. Maximal degree in co-relation 5714. Up to 911 conditions per place. [2024-06-04 15:27:24,218 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 200 selfloop transitions, 23 changer transitions 0/227 dead transitions. [2024-06-04 15:27:24,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 227 transitions, 2808 flow [2024-06-04 15:27:24,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:27:24,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:27:24,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-04 15:27:24,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37626262626262624 [2024-06-04 15:27:24,219 INFO L175 Difference]: Start difference. First operand has 280 places, 213 transitions, 2090 flow. Second operand 12 states and 149 transitions. [2024-06-04 15:27:24,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 227 transitions, 2808 flow [2024-06-04 15:27:24,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 227 transitions, 2605 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-04 15:27:24,392 INFO L231 Difference]: Finished difference. Result has 284 places, 215 transitions, 2012 flow [2024-06-04 15:27:24,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1891, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2012, PETRI_PLACES=284, PETRI_TRANSITIONS=215} [2024-06-04 15:27:24,392 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 252 predicate places. [2024-06-04 15:27:24,392 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 215 transitions, 2012 flow [2024-06-04 15:27:24,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:24,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:24,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:24,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-04 15:27:24,392 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)] === [2024-06-04 15:27:24,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:24,393 INFO L85 PathProgramCache]: Analyzing trace with hash -706225448, now seen corresponding path program 7 times [2024-06-04 15:27:24,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:24,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729222201] [2024-06-04 15:27:24,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:24,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:24,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:25,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:25,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:25,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729222201] [2024-06-04 15:27:25,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729222201] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:25,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:25,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:27:25,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101658799] [2024-06-04 15:27:25,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:25,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:27:25,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:25,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:27:25,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:27:25,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:27:25,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 215 transitions, 2012 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:25,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:25,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:27:25,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:25,901 INFO L124 PetriNetUnfolderBase]: 491/1012 cut-off events. [2024-06-04 15:27:25,901 INFO L125 PetriNetUnfolderBase]: For 66371/66371 co-relation queries the response was YES. [2024-06-04 15:27:25,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5566 conditions, 1012 events. 491/1012 cut-off events. For 66371/66371 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6094 event pairs, 127 based on Foata normal form. 1/1011 useless extension candidates. Maximal degree in co-relation 5444. Up to 918 conditions per place. [2024-06-04 15:27:25,909 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 203 selfloop transitions, 18 changer transitions 0/225 dead transitions. [2024-06-04 15:27:25,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 225 transitions, 2476 flow [2024-06-04 15:27:25,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:27:25,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:27:25,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-04 15:27:25,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371900826446281 [2024-06-04 15:27:25,910 INFO L175 Difference]: Start difference. First operand has 284 places, 215 transitions, 2012 flow. Second operand 11 states and 135 transitions. [2024-06-04 15:27:25,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 225 transitions, 2476 flow [2024-06-04 15:27:26,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 225 transitions, 2320 flow, removed 60 selfloop flow, removed 9 redundant places. [2024-06-04 15:27:26,081 INFO L231 Difference]: Finished difference. Result has 286 places, 215 transitions, 1897 flow [2024-06-04 15:27:26,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1856, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1897, PETRI_PLACES=286, PETRI_TRANSITIONS=215} [2024-06-04 15:27:26,082 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 254 predicate places. [2024-06-04 15:27:26,082 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 215 transitions, 1897 flow [2024-06-04 15:27:26,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:26,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:26,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:26,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-04 15:27:26,082 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)] === [2024-06-04 15:27:26,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:26,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1567712140, now seen corresponding path program 21 times [2024-06-04 15:27:26,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:26,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792594162] [2024-06-04 15:27:26,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:26,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:26,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:26,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:26,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:26,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792594162] [2024-06-04 15:27:26,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792594162] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:26,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:26,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:27:26,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328761119] [2024-06-04 15:27:26,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:26,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:27:26,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:26,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:27:26,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:27:27,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:27:27,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 215 transitions, 1897 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:27,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:27,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:27:27,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:27,367 INFO L124 PetriNetUnfolderBase]: 499/1029 cut-off events. [2024-06-04 15:27:27,368 INFO L125 PetriNetUnfolderBase]: For 70360/70360 co-relation queries the response was YES. [2024-06-04 15:27:27,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5536 conditions, 1029 events. 499/1029 cut-off events. For 70360/70360 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 6200 event pairs, 73 based on Foata normal form. 2/1029 useless extension candidates. Maximal degree in co-relation 5413. Up to 899 conditions per place. [2024-06-04 15:27:27,376 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 205 selfloop transitions, 24 changer transitions 0/233 dead transitions. [2024-06-04 15:27:27,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 233 transitions, 2419 flow [2024-06-04 15:27:27,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:27:27,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:27:27,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-04 15:27:27,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41515151515151516 [2024-06-04 15:27:27,378 INFO L175 Difference]: Start difference. First operand has 286 places, 215 transitions, 1897 flow. Second operand 10 states and 137 transitions. [2024-06-04 15:27:27,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 233 transitions, 2419 flow [2024-06-04 15:27:27,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 233 transitions, 2364 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 15:27:27,538 INFO L231 Difference]: Finished difference. Result has 286 places, 217 transitions, 1926 flow [2024-06-04 15:27:27,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1842, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1926, PETRI_PLACES=286, PETRI_TRANSITIONS=217} [2024-06-04 15:27:27,538 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 254 predicate places. [2024-06-04 15:27:27,538 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 217 transitions, 1926 flow [2024-06-04 15:27:27,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:27,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:27,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:27,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-04 15:27:27,539 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)] === [2024-06-04 15:27:27,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:27,539 INFO L85 PathProgramCache]: Analyzing trace with hash 390837560, now seen corresponding path program 22 times [2024-06-04 15:27:27,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:27,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285510193] [2024-06-04 15:27:27,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:27,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:27,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:28,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:28,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:28,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285510193] [2024-06-04 15:27:28,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285510193] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:28,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:28,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:27:28,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076057525] [2024-06-04 15:27:28,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:28,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:27:28,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:28,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:27:28,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:27:28,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:27:28,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 217 transitions, 1926 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:28,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:28,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:27:28,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:28,698 INFO L124 PetriNetUnfolderBase]: 507/1045 cut-off events. [2024-06-04 15:27:28,698 INFO L125 PetriNetUnfolderBase]: For 72589/72589 co-relation queries the response was YES. [2024-06-04 15:27:28,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5693 conditions, 1045 events. 507/1045 cut-off events. For 72589/72589 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 6319 event pairs, 73 based on Foata normal form. 2/1045 useless extension candidates. Maximal degree in co-relation 5569. Up to 910 conditions per place. [2024-06-04 15:27:28,705 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 214 selfloop transitions, 20 changer transitions 0/238 dead transitions. [2024-06-04 15:27:28,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 238 transitions, 2483 flow [2024-06-04 15:27:28,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:27:28,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:27:28,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-04 15:27:28,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121212121212121 [2024-06-04 15:27:28,706 INFO L175 Difference]: Start difference. First operand has 286 places, 217 transitions, 1926 flow. Second operand 10 states and 136 transitions. [2024-06-04 15:27:28,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 238 transitions, 2483 flow [2024-06-04 15:27:28,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 238 transitions, 2427 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-04 15:27:28,857 INFO L231 Difference]: Finished difference. Result has 290 places, 219 transitions, 1961 flow [2024-06-04 15:27:28,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1870, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1961, PETRI_PLACES=290, PETRI_TRANSITIONS=219} [2024-06-04 15:27:28,857 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 258 predicate places. [2024-06-04 15:27:28,857 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 219 transitions, 1961 flow [2024-06-04 15:27:28,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:28,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:28,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:28,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-04 15:27:28,857 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)] === [2024-06-04 15:27:28,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:28,858 INFO L85 PathProgramCache]: Analyzing trace with hash -145949298, now seen corresponding path program 23 times [2024-06-04 15:27:28,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:28,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977883472] [2024-06-04 15:27:28,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:28,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:28,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:29,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:29,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:29,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977883472] [2024-06-04 15:27:29,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977883472] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:29,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:29,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:27:29,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133794923] [2024-06-04 15:27:29,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:29,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:27:29,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:29,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:27:29,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:27:29,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:27:29,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 219 transitions, 1961 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:29,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:29,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:27:29,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:30,125 INFO L124 PetriNetUnfolderBase]: 504/1040 cut-off events. [2024-06-04 15:27:30,126 INFO L125 PetriNetUnfolderBase]: For 66141/66141 co-relation queries the response was YES. [2024-06-04 15:27:30,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5497 conditions, 1040 events. 504/1040 cut-off events. For 66141/66141 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 6289 event pairs, 99 based on Foata normal form. 2/1040 useless extension candidates. Maximal degree in co-relation 5371. Up to 908 conditions per place. [2024-06-04 15:27:30,135 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 209 selfloop transitions, 25 changer transitions 0/238 dead transitions. [2024-06-04 15:27:30,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 238 transitions, 2493 flow [2024-06-04 15:27:30,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:27:30,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:27:30,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-04 15:27:30,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39669421487603307 [2024-06-04 15:27:30,135 INFO L175 Difference]: Start difference. First operand has 290 places, 219 transitions, 1961 flow. Second operand 11 states and 144 transitions. [2024-06-04 15:27:30,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 238 transitions, 2493 flow [2024-06-04 15:27:30,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 238 transitions, 2417 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-04 15:27:30,277 INFO L231 Difference]: Finished difference. Result has 294 places, 219 transitions, 1939 flow [2024-06-04 15:27:30,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1885, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1939, PETRI_PLACES=294, PETRI_TRANSITIONS=219} [2024-06-04 15:27:30,278 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 262 predicate places. [2024-06-04 15:27:30,278 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 219 transitions, 1939 flow [2024-06-04 15:27:30,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:30,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:30,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:30,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-04 15:27:30,278 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)] === [2024-06-04 15:27:30,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:30,278 INFO L85 PathProgramCache]: Analyzing trace with hash -43940948, now seen corresponding path program 24 times [2024-06-04 15:27:30,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:30,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688603910] [2024-06-04 15:27:30,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:30,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:30,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:31,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:31,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:31,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688603910] [2024-06-04 15:27:31,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688603910] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:31,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:31,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:27:31,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914410480] [2024-06-04 15:27:31,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:31,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:27:31,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:31,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:27:31,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:27:31,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:27:31,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 219 transitions, 1939 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:31,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:31,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:27:31,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:31,540 INFO L124 PetriNetUnfolderBase]: 512/1056 cut-off events. [2024-06-04 15:27:31,540 INFO L125 PetriNetUnfolderBase]: For 67602/67602 co-relation queries the response was YES. [2024-06-04 15:27:31,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5566 conditions, 1056 events. 512/1056 cut-off events. For 67602/67602 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6423 event pairs, 92 based on Foata normal form. 2/1056 useless extension candidates. Maximal degree in co-relation 5438. Up to 921 conditions per place. [2024-06-04 15:27:31,549 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 215 selfloop transitions, 22 changer transitions 0/241 dead transitions. [2024-06-04 15:27:31,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 241 transitions, 2508 flow [2024-06-04 15:27:31,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:27:31,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:27:31,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-04 15:27:31,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39669421487603307 [2024-06-04 15:27:31,550 INFO L175 Difference]: Start difference. First operand has 294 places, 219 transitions, 1939 flow. Second operand 11 states and 144 transitions. [2024-06-04 15:27:31,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 241 transitions, 2508 flow [2024-06-04 15:27:31,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 241 transitions, 2395 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-06-04 15:27:31,700 INFO L231 Difference]: Finished difference. Result has 296 places, 221 transitions, 1925 flow [2024-06-04 15:27:31,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1826, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1925, PETRI_PLACES=296, PETRI_TRANSITIONS=221} [2024-06-04 15:27:31,700 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 264 predicate places. [2024-06-04 15:27:31,700 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 221 transitions, 1925 flow [2024-06-04 15:27:31,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:31,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:31,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:31,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-04 15:27:31,701 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)] === [2024-06-04 15:27:31,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:31,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1215339742, now seen corresponding path program 25 times [2024-06-04 15:27:31,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:31,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968256128] [2024-06-04 15:27:31,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:31,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:31,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:32,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:32,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:32,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968256128] [2024-06-04 15:27:32,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968256128] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:32,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:32,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:27:32,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588066152] [2024-06-04 15:27:32,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:32,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:27:32,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:32,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:27:32,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:27:32,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:27:32,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 221 transitions, 1925 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:32,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:32,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:27:32,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:32,942 INFO L124 PetriNetUnfolderBase]: 509/1051 cut-off events. [2024-06-04 15:27:32,942 INFO L125 PetriNetUnfolderBase]: For 60590/60590 co-relation queries the response was YES. [2024-06-04 15:27:32,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5290 conditions, 1051 events. 509/1051 cut-off events. For 60590/60590 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6417 event pairs, 92 based on Foata normal form. 2/1051 useless extension candidates. Maximal degree in co-relation 5164. Up to 921 conditions per place. [2024-06-04 15:27:32,950 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 208 selfloop transitions, 26 changer transitions 0/238 dead transitions. [2024-06-04 15:27:32,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 238 transitions, 2435 flow [2024-06-04 15:27:32,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:27:32,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:27:32,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-04 15:27:32,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39944903581267216 [2024-06-04 15:27:32,951 INFO L175 Difference]: Start difference. First operand has 296 places, 221 transitions, 1925 flow. Second operand 11 states and 145 transitions. [2024-06-04 15:27:32,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 238 transitions, 2435 flow [2024-06-04 15:27:33,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 238 transitions, 2347 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-04 15:27:33,074 INFO L231 Difference]: Finished difference. Result has 299 places, 221 transitions, 1893 flow [2024-06-04 15:27:33,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1837, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1893, PETRI_PLACES=299, PETRI_TRANSITIONS=221} [2024-06-04 15:27:33,074 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 267 predicate places. [2024-06-04 15:27:33,074 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 221 transitions, 1893 flow [2024-06-04 15:27:33,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:33,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:33,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:33,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-04 15:27:33,075 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)] === [2024-06-04 15:27:33,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:33,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1367476912, now seen corresponding path program 26 times [2024-06-04 15:27:33,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:33,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142960986] [2024-06-04 15:27:33,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:33,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:33,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:33,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:33,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:33,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142960986] [2024-06-04 15:27:33,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142960986] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:33,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:33,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:27:33,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572308867] [2024-06-04 15:27:33,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:33,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:27:33,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:33,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:27:33,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:27:33,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:27:33,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 221 transitions, 1893 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:33,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:33,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:27:33,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:34,226 INFO L124 PetriNetUnfolderBase]: 506/1046 cut-off events. [2024-06-04 15:27:34,227 INFO L125 PetriNetUnfolderBase]: For 52559/52559 co-relation queries the response was YES. [2024-06-04 15:27:34,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4991 conditions, 1046 events. 506/1046 cut-off events. For 52559/52559 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6401 event pairs, 67 based on Foata normal form. 2/1046 useless extension candidates. Maximal degree in co-relation 4864. Up to 876 conditions per place. [2024-06-04 15:27:34,235 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 212 selfloop transitions, 25 changer transitions 0/241 dead transitions. [2024-06-04 15:27:34,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 241 transitions, 2415 flow [2024-06-04 15:27:34,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:27:34,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:27:34,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-04 15:27:34,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39118457300275483 [2024-06-04 15:27:34,236 INFO L175 Difference]: Start difference. First operand has 299 places, 221 transitions, 1893 flow. Second operand 11 states and 142 transitions. [2024-06-04 15:27:34,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 241 transitions, 2415 flow [2024-06-04 15:27:34,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 241 transitions, 2333 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-04 15:27:34,366 INFO L231 Difference]: Finished difference. Result has 299 places, 221 transitions, 1865 flow [2024-06-04 15:27:34,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1811, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1865, PETRI_PLACES=299, PETRI_TRANSITIONS=221} [2024-06-04 15:27:34,366 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 267 predicate places. [2024-06-04 15:27:34,366 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 221 transitions, 1865 flow [2024-06-04 15:27:34,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:34,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:34,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:34,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-04 15:27:34,367 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)] === [2024-06-04 15:27:34,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:34,367 INFO L85 PathProgramCache]: Analyzing trace with hash -276020107, now seen corresponding path program 1 times [2024-06-04 15:27:34,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:34,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616707710] [2024-06-04 15:27:34,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:34,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:34,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:35,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:35,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:35,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616707710] [2024-06-04 15:27:35,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616707710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:35,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:35,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:27:35,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237085019] [2024-06-04 15:27:35,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:35,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:27:35,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:35,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:27:35,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:27:35,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:27:35,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 221 transitions, 1865 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:35,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:35,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:27:35,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:35,664 INFO L124 PetriNetUnfolderBase]: 510/1054 cut-off events. [2024-06-04 15:27:35,664 INFO L125 PetriNetUnfolderBase]: For 54161/54161 co-relation queries the response was YES. [2024-06-04 15:27:35,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5009 conditions, 1054 events. 510/1054 cut-off events. For 54161/54161 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6422 event pairs, 103 based on Foata normal form. 2/1054 useless extension candidates. Maximal degree in co-relation 4883. Up to 894 conditions per place. [2024-06-04 15:27:35,693 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 199 selfloop transitions, 33 changer transitions 0/236 dead transitions. [2024-06-04 15:27:35,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 236 transitions, 2377 flow [2024-06-04 15:27:35,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:27:35,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:27:35,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-04 15:27:35,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39118457300275483 [2024-06-04 15:27:35,694 INFO L175 Difference]: Start difference. First operand has 299 places, 221 transitions, 1865 flow. Second operand 11 states and 142 transitions. [2024-06-04 15:27:35,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 236 transitions, 2377 flow [2024-06-04 15:27:35,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 236 transitions, 2122 flow, removed 22 selfloop flow, removed 17 redundant places. [2024-06-04 15:27:35,825 INFO L231 Difference]: Finished difference. Result has 293 places, 222 transitions, 1698 flow [2024-06-04 15:27:35,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1610, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1698, PETRI_PLACES=293, PETRI_TRANSITIONS=222} [2024-06-04 15:27:35,825 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 261 predicate places. [2024-06-04 15:27:35,825 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 222 transitions, 1698 flow [2024-06-04 15:27:35,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:35,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:35,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:35,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-04 15:27:35,826 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)] === [2024-06-04 15:27:35,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:35,826 INFO L85 PathProgramCache]: Analyzing trace with hash -281526637, now seen corresponding path program 2 times [2024-06-04 15:27:35,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:35,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132661910] [2024-06-04 15:27:35,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:35,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:35,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:36,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:36,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:36,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132661910] [2024-06-04 15:27:36,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132661910] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:36,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:36,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:27:36,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167315267] [2024-06-04 15:27:36,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:36,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:27:36,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:36,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:27:36,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:27:36,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:27:36,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 222 transitions, 1698 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:36,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:36,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:27:36,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:37,137 INFO L124 PetriNetUnfolderBase]: 521/1075 cut-off events. [2024-06-04 15:27:37,138 INFO L125 PetriNetUnfolderBase]: For 63038/63038 co-relation queries the response was YES. [2024-06-04 15:27:37,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4914 conditions, 1075 events. 521/1075 cut-off events. For 63038/63038 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6574 event pairs, 110 based on Foata normal form. 2/1075 useless extension candidates. Maximal degree in co-relation 4794. Up to 872 conditions per place. [2024-06-04 15:27:37,147 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 201 selfloop transitions, 35 changer transitions 0/240 dead transitions. [2024-06-04 15:27:37,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 240 transitions, 2432 flow [2024-06-04 15:27:37,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:27:37,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:27:37,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-04 15:27:37,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4022038567493113 [2024-06-04 15:27:37,148 INFO L175 Difference]: Start difference. First operand has 293 places, 222 transitions, 1698 flow. Second operand 11 states and 146 transitions. [2024-06-04 15:27:37,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 240 transitions, 2432 flow [2024-06-04 15:27:37,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 240 transitions, 2320 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-04 15:27:37,322 INFO L231 Difference]: Finished difference. Result has 294 places, 224 transitions, 1698 flow [2024-06-04 15:27:37,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1586, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1698, PETRI_PLACES=294, PETRI_TRANSITIONS=224} [2024-06-04 15:27:37,322 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 262 predicate places. [2024-06-04 15:27:37,323 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 224 transitions, 1698 flow [2024-06-04 15:27:37,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:37,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:37,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:37,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-04 15:27:37,323 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)] === [2024-06-04 15:27:37,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:37,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1468488023, now seen corresponding path program 3 times [2024-06-04 15:27:37,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:37,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386619137] [2024-06-04 15:27:37,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:37,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:37,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:38,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:38,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:38,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386619137] [2024-06-04 15:27:38,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386619137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:38,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:38,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:27:38,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262937979] [2024-06-04 15:27:38,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:38,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:27:38,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:38,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:27:38,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:27:38,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:27:38,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 224 transitions, 1698 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:38,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:38,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:27:38,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:38,661 INFO L124 PetriNetUnfolderBase]: 525/1083 cut-off events. [2024-06-04 15:27:38,661 INFO L125 PetriNetUnfolderBase]: For 65329/65329 co-relation queries the response was YES. [2024-06-04 15:27:38,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4904 conditions, 1083 events. 525/1083 cut-off events. For 65329/65329 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6618 event pairs, 112 based on Foata normal form. 2/1083 useless extension candidates. Maximal degree in co-relation 4784. Up to 915 conditions per place. [2024-06-04 15:27:38,669 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 200 selfloop transitions, 35 changer transitions 0/239 dead transitions. [2024-06-04 15:27:38,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 239 transitions, 2220 flow [2024-06-04 15:27:38,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:27:38,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:27:38,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-04 15:27:38,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39118457300275483 [2024-06-04 15:27:38,670 INFO L175 Difference]: Start difference. First operand has 294 places, 224 transitions, 1698 flow. Second operand 11 states and 142 transitions. [2024-06-04 15:27:38,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 239 transitions, 2220 flow [2024-06-04 15:27:38,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 239 transitions, 2156 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-04 15:27:38,829 INFO L231 Difference]: Finished difference. Result has 298 places, 225 transitions, 1731 flow [2024-06-04 15:27:38,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1634, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1731, PETRI_PLACES=298, PETRI_TRANSITIONS=225} [2024-06-04 15:27:38,830 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 266 predicate places. [2024-06-04 15:27:38,830 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 225 transitions, 1731 flow [2024-06-04 15:27:38,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:38,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:38,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:38,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-04 15:27:38,831 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)] === [2024-06-04 15:27:38,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:38,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1774259979, now seen corresponding path program 4 times [2024-06-04 15:27:38,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:38,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305089328] [2024-06-04 15:27:38,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:38,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:38,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:39,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:39,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:39,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305089328] [2024-06-04 15:27:39,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305089328] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:39,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:39,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:27:39,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082278040] [2024-06-04 15:27:39,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:39,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:27:39,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:39,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:27:39,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:27:39,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:27:39,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 225 transitions, 1731 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:39,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:39,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:27:39,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:40,080 INFO L124 PetriNetUnfolderBase]: 522/1078 cut-off events. [2024-06-04 15:27:40,080 INFO L125 PetriNetUnfolderBase]: For 56094/56094 co-relation queries the response was YES. [2024-06-04 15:27:40,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4714 conditions, 1078 events. 522/1078 cut-off events. For 56094/56094 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6613 event pairs, 113 based on Foata normal form. 2/1078 useless extension candidates. Maximal degree in co-relation 4592. Up to 918 conditions per place. [2024-06-04 15:27:40,093 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 202 selfloop transitions, 33 changer transitions 0/239 dead transitions. [2024-06-04 15:27:40,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 239 transitions, 2233 flow [2024-06-04 15:27:40,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:27:40,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:27:40,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-04 15:27:40,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39118457300275483 [2024-06-04 15:27:40,094 INFO L175 Difference]: Start difference. First operand has 298 places, 225 transitions, 1731 flow. Second operand 11 states and 142 transitions. [2024-06-04 15:27:40,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 239 transitions, 2233 flow [2024-06-04 15:27:40,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 239 transitions, 2138 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-04 15:27:40,287 INFO L231 Difference]: Finished difference. Result has 300 places, 225 transitions, 1706 flow [2024-06-04 15:27:40,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1636, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1706, PETRI_PLACES=300, PETRI_TRANSITIONS=225} [2024-06-04 15:27:40,288 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 268 predicate places. [2024-06-04 15:27:40,288 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 225 transitions, 1706 flow [2024-06-04 15:27:40,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:40,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:40,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:40,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-04 15:27:40,288 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)] === [2024-06-04 15:27:40,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:40,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1824963603, now seen corresponding path program 5 times [2024-06-04 15:27:40,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:40,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420101923] [2024-06-04 15:27:40,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:40,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:40,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:41,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:41,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:41,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420101923] [2024-06-04 15:27:41,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420101923] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:41,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:41,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:27:41,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885253322] [2024-06-04 15:27:41,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:41,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:27:41,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:41,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:27:41,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:27:41,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:27:41,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 225 transitions, 1706 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:41,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:41,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:27:41,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:41,542 INFO L124 PetriNetUnfolderBase]: 526/1086 cut-off events. [2024-06-04 15:27:41,542 INFO L125 PetriNetUnfolderBase]: For 58285/58285 co-relation queries the response was YES. [2024-06-04 15:27:41,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4737 conditions, 1086 events. 526/1086 cut-off events. For 58285/58285 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6670 event pairs, 109 based on Foata normal form. 2/1086 useless extension candidates. Maximal degree in co-relation 4614. Up to 878 conditions per place. [2024-06-04 15:27:41,551 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 200 selfloop transitions, 37 changer transitions 0/241 dead transitions. [2024-06-04 15:27:41,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 241 transitions, 2236 flow [2024-06-04 15:27:41,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:27:41,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:27:41,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-04 15:27:41,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39944903581267216 [2024-06-04 15:27:41,552 INFO L175 Difference]: Start difference. First operand has 300 places, 225 transitions, 1706 flow. Second operand 11 states and 145 transitions. [2024-06-04 15:27:41,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 241 transitions, 2236 flow [2024-06-04 15:27:41,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 241 transitions, 2161 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-04 15:27:41,708 INFO L231 Difference]: Finished difference. Result has 301 places, 226 transitions, 1734 flow [2024-06-04 15:27:41,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1631, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1734, PETRI_PLACES=301, PETRI_TRANSITIONS=226} [2024-06-04 15:27:41,708 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 269 predicate places. [2024-06-04 15:27:41,709 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 226 transitions, 1734 flow [2024-06-04 15:27:41,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:41,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:41,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:41,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-04 15:27:41,709 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)] === [2024-06-04 15:27:41,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:41,710 INFO L85 PathProgramCache]: Analyzing trace with hash 849238119, now seen corresponding path program 6 times [2024-06-04 15:27:41,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:41,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848335196] [2024-06-04 15:27:41,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:41,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:41,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:42,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:42,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:42,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848335196] [2024-06-04 15:27:42,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848335196] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:42,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:42,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:27:42,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243357470] [2024-06-04 15:27:42,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:42,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:27:42,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:42,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:27:42,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:27:42,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:27:42,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 226 transitions, 1734 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:42,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:42,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:27:42,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:42,920 INFO L124 PetriNetUnfolderBase]: 530/1094 cut-off events. [2024-06-04 15:27:42,920 INFO L125 PetriNetUnfolderBase]: For 59875/59875 co-relation queries the response was YES. [2024-06-04 15:27:42,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4814 conditions, 1094 events. 530/1094 cut-off events. For 59875/59875 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6730 event pairs, 109 based on Foata normal form. 2/1094 useless extension candidates. Maximal degree in co-relation 4690. Up to 798 conditions per place. [2024-06-04 15:27:42,932 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 201 selfloop transitions, 38 changer transitions 0/243 dead transitions. [2024-06-04 15:27:42,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 243 transitions, 2272 flow [2024-06-04 15:27:42,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:27:42,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:27:42,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-04 15:27:42,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4022038567493113 [2024-06-04 15:27:42,934 INFO L175 Difference]: Start difference. First operand has 301 places, 226 transitions, 1734 flow. Second operand 11 states and 146 transitions. [2024-06-04 15:27:42,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 243 transitions, 2272 flow [2024-06-04 15:27:43,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 243 transitions, 2181 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-04 15:27:43,108 INFO L231 Difference]: Finished difference. Result has 303 places, 227 transitions, 1749 flow [2024-06-04 15:27:43,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1643, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1749, PETRI_PLACES=303, PETRI_TRANSITIONS=227} [2024-06-04 15:27:43,108 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 271 predicate places. [2024-06-04 15:27:43,108 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 227 transitions, 1749 flow [2024-06-04 15:27:43,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:43,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:43,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:43,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-04 15:27:43,109 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)] === [2024-06-04 15:27:43,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:43,109 INFO L85 PathProgramCache]: Analyzing trace with hash 694424453, now seen corresponding path program 7 times [2024-06-04 15:27:43,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:43,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106808109] [2024-06-04 15:27:43,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:43,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:43,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:44,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:44,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:44,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106808109] [2024-06-04 15:27:44,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106808109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:44,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:44,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:27:44,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244976895] [2024-06-04 15:27:44,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:44,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:27:44,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:44,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:27:44,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:27:44,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:27:44,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 227 transitions, 1749 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:44,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:44,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:27:44,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:44,477 INFO L124 PetriNetUnfolderBase]: 541/1115 cut-off events. [2024-06-04 15:27:44,478 INFO L125 PetriNetUnfolderBase]: For 71344/71344 co-relation queries the response was YES. [2024-06-04 15:27:44,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5173 conditions, 1115 events. 541/1115 cut-off events. For 71344/71344 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6863 event pairs, 98 based on Foata normal form. 2/1115 useless extension candidates. Maximal degree in co-relation 5048. Up to 831 conditions per place. [2024-06-04 15:27:44,487 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 205 selfloop transitions, 39 changer transitions 0/248 dead transitions. [2024-06-04 15:27:44,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 248 transitions, 2533 flow [2024-06-04 15:27:44,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:27:44,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:27:44,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 149 transitions. [2024-06-04 15:27:44,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41046831955922863 [2024-06-04 15:27:44,487 INFO L175 Difference]: Start difference. First operand has 303 places, 227 transitions, 1749 flow. Second operand 11 states and 149 transitions. [2024-06-04 15:27:44,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 248 transitions, 2533 flow [2024-06-04 15:27:44,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 248 transitions, 2437 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-04 15:27:44,666 INFO L231 Difference]: Finished difference. Result has 305 places, 229 transitions, 1789 flow [2024-06-04 15:27:44,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1653, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1789, PETRI_PLACES=305, PETRI_TRANSITIONS=229} [2024-06-04 15:27:44,666 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 273 predicate places. [2024-06-04 15:27:44,666 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 229 transitions, 1789 flow [2024-06-04 15:27:44,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:44,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:44,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:44,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-04 15:27:44,666 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)] === [2024-06-04 15:27:44,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:44,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1979398929, now seen corresponding path program 8 times [2024-06-04 15:27:44,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:44,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788602627] [2024-06-04 15:27:44,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:44,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:44,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:45,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:45,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:45,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788602627] [2024-06-04 15:27:45,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788602627] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:45,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:45,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:27:45,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758872561] [2024-06-04 15:27:45,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:45,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:27:45,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:45,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:27:45,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:27:45,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:27:45,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 229 transitions, 1789 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:45,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:45,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:27:45,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:46,028 INFO L124 PetriNetUnfolderBase]: 545/1121 cut-off events. [2024-06-04 15:27:46,028 INFO L125 PetriNetUnfolderBase]: For 72899/72899 co-relation queries the response was YES. [2024-06-04 15:27:46,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5225 conditions, 1121 events. 545/1121 cut-off events. For 72899/72899 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6935 event pairs, 103 based on Foata normal form. 2/1117 useless extension candidates. Maximal degree in co-relation 5099. Up to 1004 conditions per place. [2024-06-04 15:27:46,038 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 213 selfloop transitions, 26 changer transitions 0/243 dead transitions. [2024-06-04 15:27:46,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 243 transitions, 2327 flow [2024-06-04 15:27:46,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:27:46,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:27:46,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-04 15:27:46,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-04 15:27:46,039 INFO L175 Difference]: Start difference. First operand has 305 places, 229 transitions, 1789 flow. Second operand 11 states and 143 transitions. [2024-06-04 15:27:46,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 243 transitions, 2327 flow [2024-06-04 15:27:46,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 243 transitions, 2233 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-04 15:27:46,260 INFO L231 Difference]: Finished difference. Result has 308 places, 230 transitions, 1781 flow [2024-06-04 15:27:46,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1701, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1781, PETRI_PLACES=308, PETRI_TRANSITIONS=230} [2024-06-04 15:27:46,261 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 276 predicate places. [2024-06-04 15:27:46,261 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 230 transitions, 1781 flow [2024-06-04 15:27:46,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:46,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:46,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:46,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-04 15:27:46,261 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)] === [2024-06-04 15:27:46,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:46,262 INFO L85 PathProgramCache]: Analyzing trace with hash 870732411, now seen corresponding path program 9 times [2024-06-04 15:27:46,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:46,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849404713] [2024-06-04 15:27:46,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:46,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:46,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:47,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:47,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:47,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849404713] [2024-06-04 15:27:47,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849404713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:47,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:47,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:27:47,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123348422] [2024-06-04 15:27:47,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:47,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:27:47,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:47,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:27:47,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:27:47,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:27:47,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 230 transitions, 1781 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:47,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:47,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:27:47,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:47,732 INFO L124 PetriNetUnfolderBase]: 549/1129 cut-off events. [2024-06-04 15:27:47,732 INFO L125 PetriNetUnfolderBase]: For 73838/73838 co-relation queries the response was YES. [2024-06-04 15:27:47,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5229 conditions, 1129 events. 549/1129 cut-off events. For 73838/73838 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 7014 event pairs, 103 based on Foata normal form. 2/1125 useless extension candidates. Maximal degree in co-relation 5102. Up to 998 conditions per place. [2024-06-04 15:27:47,742 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 214 selfloop transitions, 27 changer transitions 0/245 dead transitions. [2024-06-04 15:27:47,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 245 transitions, 2321 flow [2024-06-04 15:27:47,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:27:47,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:27:47,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-04 15:27:47,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-04 15:27:47,743 INFO L175 Difference]: Start difference. First operand has 308 places, 230 transitions, 1781 flow. Second operand 12 states and 153 transitions. [2024-06-04 15:27:47,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 245 transitions, 2321 flow [2024-06-04 15:27:47,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 245 transitions, 2253 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-04 15:27:47,961 INFO L231 Difference]: Finished difference. Result has 311 places, 231 transitions, 1797 flow [2024-06-04 15:27:47,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1713, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1797, PETRI_PLACES=311, PETRI_TRANSITIONS=231} [2024-06-04 15:27:47,961 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 279 predicate places. [2024-06-04 15:27:47,961 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 231 transitions, 1797 flow [2024-06-04 15:27:47,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:47,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:47,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:47,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-04 15:27:47,962 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)] === [2024-06-04 15:27:47,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:47,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1273940513, now seen corresponding path program 10 times [2024-06-04 15:27:47,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:47,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410311889] [2024-06-04 15:27:47,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:47,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:47,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:48,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:48,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:48,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410311889] [2024-06-04 15:27:48,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410311889] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:48,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:48,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:27:48,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819062392] [2024-06-04 15:27:48,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:48,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:27:48,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:48,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:27:48,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:27:49,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:27:49,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 231 transitions, 1797 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:49,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:49,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:27:49,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:49,330 INFO L124 PetriNetUnfolderBase]: 553/1139 cut-off events. [2024-06-04 15:27:49,331 INFO L125 PetriNetUnfolderBase]: For 75494/75494 co-relation queries the response was YES. [2024-06-04 15:27:49,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5290 conditions, 1139 events. 553/1139 cut-off events. For 75494/75494 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 7048 event pairs, 101 based on Foata normal form. 2/1139 useless extension candidates. Maximal degree in co-relation 5162. Up to 893 conditions per place. [2024-06-04 15:27:49,341 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 201 selfloop transitions, 45 changer transitions 0/250 dead transitions. [2024-06-04 15:27:49,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 250 transitions, 2563 flow [2024-06-04 15:27:49,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:27:49,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:27:49,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-04 15:27:49,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4049586776859504 [2024-06-04 15:27:49,342 INFO L175 Difference]: Start difference. First operand has 311 places, 231 transitions, 1797 flow. Second operand 11 states and 147 transitions. [2024-06-04 15:27:49,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 250 transitions, 2563 flow [2024-06-04 15:27:49,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 250 transitions, 2495 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-04 15:27:49,501 INFO L231 Difference]: Finished difference. Result has 313 places, 232 transitions, 1851 flow [2024-06-04 15:27:49,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1729, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1851, PETRI_PLACES=313, PETRI_TRANSITIONS=232} [2024-06-04 15:27:49,502 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 281 predicate places. [2024-06-04 15:27:49,502 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 232 transitions, 1851 flow [2024-06-04 15:27:49,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:49,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:49,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:49,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-04 15:27:49,502 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)] === [2024-06-04 15:27:49,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:49,502 INFO L85 PathProgramCache]: Analyzing trace with hash 8055215, now seen corresponding path program 11 times [2024-06-04 15:27:49,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:49,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629757366] [2024-06-04 15:27:49,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:49,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:49,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:50,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:50,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:50,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629757366] [2024-06-04 15:27:50,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629757366] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:50,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:50,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:27:50,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882807154] [2024-06-04 15:27:50,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:50,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:27:50,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:50,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:27:50,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:27:50,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:27:50,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 232 transitions, 1851 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:50,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:50,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:27:50,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:50,837 INFO L124 PetriNetUnfolderBase]: 557/1147 cut-off events. [2024-06-04 15:27:50,838 INFO L125 PetriNetUnfolderBase]: For 76978/76978 co-relation queries the response was YES. [2024-06-04 15:27:50,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5395 conditions, 1147 events. 557/1147 cut-off events. For 76978/76978 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7097 event pairs, 85 based on Foata normal form. 2/1147 useless extension candidates. Maximal degree in co-relation 5266. Up to 885 conditions per place. [2024-06-04 15:27:50,848 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 214 selfloop transitions, 34 changer transitions 0/252 dead transitions. [2024-06-04 15:27:50,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 252 transitions, 2417 flow [2024-06-04 15:27:50,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:27:50,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:27:50,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-04 15:27:50,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3884297520661157 [2024-06-04 15:27:50,850 INFO L175 Difference]: Start difference. First operand has 313 places, 232 transitions, 1851 flow. Second operand 11 states and 141 transitions. [2024-06-04 15:27:50,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 252 transitions, 2417 flow [2024-06-04 15:27:51,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 252 transitions, 2305 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-04 15:27:51,030 INFO L231 Difference]: Finished difference. Result has 315 places, 233 transitions, 1842 flow [2024-06-04 15:27:51,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1739, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1842, PETRI_PLACES=315, PETRI_TRANSITIONS=233} [2024-06-04 15:27:51,030 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 283 predicate places. [2024-06-04 15:27:51,031 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 233 transitions, 1842 flow [2024-06-04 15:27:51,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:51,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:51,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:51,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-04 15:27:51,031 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)] === [2024-06-04 15:27:51,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:51,031 INFO L85 PathProgramCache]: Analyzing trace with hash 825499025, now seen corresponding path program 1 times [2024-06-04 15:27:51,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:51,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738541122] [2024-06-04 15:27:51,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:51,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:51,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:52,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:52,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:52,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738541122] [2024-06-04 15:27:52,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738541122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:52,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:52,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:27:52,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555219231] [2024-06-04 15:27:52,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:52,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:27:52,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:52,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:27:52,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:27:52,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:27:52,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 233 transitions, 1842 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:52,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:52,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:27:52,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:52,812 INFO L124 PetriNetUnfolderBase]: 576/1193 cut-off events. [2024-06-04 15:27:52,812 INFO L125 PetriNetUnfolderBase]: For 108907/108907 co-relation queries the response was YES. [2024-06-04 15:27:52,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5611 conditions, 1193 events. 576/1193 cut-off events. For 108907/108907 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 7428 event pairs, 133 based on Foata normal form. 8/1197 useless extension candidates. Maximal degree in co-relation 5481. Up to 1035 conditions per place. [2024-06-04 15:27:52,822 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 220 selfloop transitions, 25 changer transitions 9/258 dead transitions. [2024-06-04 15:27:52,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 258 transitions, 2506 flow [2024-06-04 15:27:52,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 15:27:52,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 15:27:52,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 163 transitions. [2024-06-04 15:27:52,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37995337995337997 [2024-06-04 15:27:52,823 INFO L175 Difference]: Start difference. First operand has 315 places, 233 transitions, 1842 flow. Second operand 13 states and 163 transitions. [2024-06-04 15:27:52,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 258 transitions, 2506 flow [2024-06-04 15:27:53,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 258 transitions, 2419 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-04 15:27:53,023 INFO L231 Difference]: Finished difference. Result has 324 places, 239 transitions, 1880 flow [2024-06-04 15:27:53,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1755, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1880, PETRI_PLACES=324, PETRI_TRANSITIONS=239} [2024-06-04 15:27:53,023 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 292 predicate places. [2024-06-04 15:27:53,023 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 239 transitions, 1880 flow [2024-06-04 15:27:53,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:53,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:53,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:53,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-04 15:27:53,024 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)] === [2024-06-04 15:27:53,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:53,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1534780013, now seen corresponding path program 2 times [2024-06-04 15:27:53,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:53,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193256333] [2024-06-04 15:27:53,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:53,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:53,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:54,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:54,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:54,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193256333] [2024-06-04 15:27:54,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193256333] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:54,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:54,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:27:54,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435868797] [2024-06-04 15:27:54,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:54,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:27:54,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:54,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:27:54,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:27:54,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:27:54,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 239 transitions, 1880 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:54,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:54,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:27:54,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:54,609 INFO L124 PetriNetUnfolderBase]: 589/1223 cut-off events. [2024-06-04 15:27:54,609 INFO L125 PetriNetUnfolderBase]: For 141553/141553 co-relation queries the response was YES. [2024-06-04 15:27:54,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6627 conditions, 1223 events. 589/1223 cut-off events. For 141553/141553 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 7577 event pairs, 138 based on Foata normal form. 6/1227 useless extension candidates. Maximal degree in co-relation 6491. Up to 983 conditions per place. [2024-06-04 15:27:54,620 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 211 selfloop transitions, 36 changer transitions 9/260 dead transitions. [2024-06-04 15:27:54,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 260 transitions, 2758 flow [2024-06-04 15:27:54,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:27:54,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:27:54,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 158 transitions. [2024-06-04 15:27:54,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.398989898989899 [2024-06-04 15:27:54,620 INFO L175 Difference]: Start difference. First operand has 324 places, 239 transitions, 1880 flow. Second operand 12 states and 158 transitions. [2024-06-04 15:27:54,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 260 transitions, 2758 flow [2024-06-04 15:27:55,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 260 transitions, 2714 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-04 15:27:55,009 INFO L231 Difference]: Finished difference. Result has 326 places, 234 transitions, 1867 flow [2024-06-04 15:27:55,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1838, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1867, PETRI_PLACES=326, PETRI_TRANSITIONS=234} [2024-06-04 15:27:55,009 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 294 predicate places. [2024-06-04 15:27:55,009 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 234 transitions, 1867 flow [2024-06-04 15:27:55,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:55,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:55,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:55,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-04 15:27:55,010 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)] === [2024-06-04 15:27:55,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:55,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1129690507, now seen corresponding path program 3 times [2024-06-04 15:27:55,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:55,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973580571] [2024-06-04 15:27:55,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:55,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:55,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:56,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:56,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:56,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973580571] [2024-06-04 15:27:56,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973580571] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:56,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:56,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:27:56,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530926639] [2024-06-04 15:27:56,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:56,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:27:56,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:56,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:27:56,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:27:56,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:27:56,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 234 transitions, 1867 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:56,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:56,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:27:56,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:56,745 INFO L124 PetriNetUnfolderBase]: 583/1209 cut-off events. [2024-06-04 15:27:56,746 INFO L125 PetriNetUnfolderBase]: For 152943/152943 co-relation queries the response was YES. [2024-06-04 15:27:56,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6638 conditions, 1209 events. 583/1209 cut-off events. For 152943/152943 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 7474 event pairs, 131 based on Foata normal form. 8/1215 useless extension candidates. Maximal degree in co-relation 6503. Up to 1028 conditions per place. [2024-06-04 15:27:56,755 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 198 selfloop transitions, 38 changer transitions 13/253 dead transitions. [2024-06-04 15:27:56,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 253 transitions, 2473 flow [2024-06-04 15:27:56,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:27:56,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:27:56,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 155 transitions. [2024-06-04 15:27:56,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39141414141414144 [2024-06-04 15:27:56,756 INFO L175 Difference]: Start difference. First operand has 326 places, 234 transitions, 1867 flow. Second operand 12 states and 155 transitions. [2024-06-04 15:27:56,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 253 transitions, 2473 flow [2024-06-04 15:27:57,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 253 transitions, 2395 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-04 15:27:57,123 INFO L231 Difference]: Finished difference. Result has 321 places, 227 transitions, 1817 flow [2024-06-04 15:27:57,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1789, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1817, PETRI_PLACES=321, PETRI_TRANSITIONS=227} [2024-06-04 15:27:57,123 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 289 predicate places. [2024-06-04 15:27:57,123 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 227 transitions, 1817 flow [2024-06-04 15:27:57,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:57,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:57,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:57,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-04 15:27:57,123 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)] === [2024-06-04 15:27:57,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:57,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1385338547, now seen corresponding path program 12 times [2024-06-04 15:27:57,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:57,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543729660] [2024-06-04 15:27:57,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:57,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:57,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:57,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:57,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:57,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543729660] [2024-06-04 15:27:57,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543729660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:57,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:57,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:27:57,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352928240] [2024-06-04 15:27:57,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:57,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:27:57,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:57,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:27:57,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:27:58,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:27:58,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 227 transitions, 1817 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:58,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:58,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:27:58,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:58,388 INFO L124 PetriNetUnfolderBase]: 563/1171 cut-off events. [2024-06-04 15:27:58,388 INFO L125 PetriNetUnfolderBase]: For 119814/119814 co-relation queries the response was YES. [2024-06-04 15:27:58,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6436 conditions, 1171 events. 563/1171 cut-off events. For 119814/119814 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 7259 event pairs, 142 based on Foata normal form. 2/1167 useless extension candidates. Maximal degree in co-relation 6304. Up to 945 conditions per place. [2024-06-04 15:27:58,398 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 189 selfloop transitions, 47 changer transitions 0/240 dead transitions. [2024-06-04 15:27:58,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 240 transitions, 2343 flow [2024-06-04 15:27:58,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:27:58,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:27:58,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-04 15:27:58,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40771349862258954 [2024-06-04 15:27:58,399 INFO L175 Difference]: Start difference. First operand has 321 places, 227 transitions, 1817 flow. Second operand 11 states and 148 transitions. [2024-06-04 15:27:58,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 240 transitions, 2343 flow [2024-06-04 15:27:58,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 240 transitions, 2249 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-04 15:27:58,739 INFO L231 Difference]: Finished difference. Result has 317 places, 228 transitions, 1851 flow [2024-06-04 15:27:58,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1723, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1851, PETRI_PLACES=317, PETRI_TRANSITIONS=228} [2024-06-04 15:27:58,740 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 285 predicate places. [2024-06-04 15:27:58,740 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 228 transitions, 1851 flow [2024-06-04 15:27:58,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:58,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:58,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:58,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-04 15:27:58,740 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)] === [2024-06-04 15:27:58,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:58,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1392432945, now seen corresponding path program 13 times [2024-06-04 15:27:58,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:58,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177410548] [2024-06-04 15:27:58,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:58,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:58,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:59,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:59,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:59,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177410548] [2024-06-04 15:27:59,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177410548] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:59,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:59,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:27:59,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910478274] [2024-06-04 15:27:59,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:59,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:27:59,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:59,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:27:59,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:27:59,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:27:59,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 228 transitions, 1851 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:59,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:59,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:27:59,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:00,179 INFO L124 PetriNetUnfolderBase]: 574/1192 cut-off events. [2024-06-04 15:28:00,179 INFO L125 PetriNetUnfolderBase]: For 129394/129394 co-relation queries the response was YES. [2024-06-04 15:28:00,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6799 conditions, 1192 events. 574/1192 cut-off events. For 129394/129394 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 7394 event pairs, 143 based on Foata normal form. 2/1188 useless extension candidates. Maximal degree in co-relation 6668. Up to 927 conditions per place. [2024-06-04 15:28:00,190 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 191 selfloop transitions, 49 changer transitions 0/244 dead transitions. [2024-06-04 15:28:00,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 244 transitions, 2629 flow [2024-06-04 15:28:00,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:28:00,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:28:00,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 152 transitions. [2024-06-04 15:28:00,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.418732782369146 [2024-06-04 15:28:00,191 INFO L175 Difference]: Start difference. First operand has 317 places, 228 transitions, 1851 flow. Second operand 11 states and 152 transitions. [2024-06-04 15:28:00,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 244 transitions, 2629 flow [2024-06-04 15:28:00,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 244 transitions, 2511 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-04 15:28:00,561 INFO L231 Difference]: Finished difference. Result has 319 places, 230 transitions, 1897 flow [2024-06-04 15:28:00,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1733, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1897, PETRI_PLACES=319, PETRI_TRANSITIONS=230} [2024-06-04 15:28:00,561 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 287 predicate places. [2024-06-04 15:28:00,561 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 230 transitions, 1897 flow [2024-06-04 15:28:00,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:00,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:00,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:00,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-04 15:28:00,562 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)] === [2024-06-04 15:28:00,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:00,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1552518887, now seen corresponding path program 14 times [2024-06-04 15:28:00,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:00,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351260028] [2024-06-04 15:28:00,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:00,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:00,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:01,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:01,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:01,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351260028] [2024-06-04 15:28:01,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351260028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:01,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:01,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:28:01,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373551293] [2024-06-04 15:28:01,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:01,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:28:01,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:01,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:28:01,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:28:01,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:28:01,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 230 transitions, 1897 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:01,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:01,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:28:01,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:01,906 INFO L124 PetriNetUnfolderBase]: 571/1187 cut-off events. [2024-06-04 15:28:01,906 INFO L125 PetriNetUnfolderBase]: For 120728/120728 co-relation queries the response was YES. [2024-06-04 15:28:01,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6546 conditions, 1187 events. 571/1187 cut-off events. For 120728/120728 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 7391 event pairs, 144 based on Foata normal form. 2/1183 useless extension candidates. Maximal degree in co-relation 6414. Up to 961 conditions per place. [2024-06-04 15:28:01,916 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 188 selfloop transitions, 50 changer transitions 0/242 dead transitions. [2024-06-04 15:28:01,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 242 transitions, 2399 flow [2024-06-04 15:28:01,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:28:01,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:28:01,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 158 transitions. [2024-06-04 15:28:01,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.398989898989899 [2024-06-04 15:28:01,917 INFO L175 Difference]: Start difference. First operand has 319 places, 230 transitions, 1897 flow. Second operand 12 states and 158 transitions. [2024-06-04 15:28:01,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 242 transitions, 2399 flow [2024-06-04 15:28:02,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 242 transitions, 2287 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-04 15:28:02,240 INFO L231 Difference]: Finished difference. Result has 324 places, 230 transitions, 1889 flow [2024-06-04 15:28:02,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1785, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1889, PETRI_PLACES=324, PETRI_TRANSITIONS=230} [2024-06-04 15:28:02,240 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 292 predicate places. [2024-06-04 15:28:02,240 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 230 transitions, 1889 flow [2024-06-04 15:28:02,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:02,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:02,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:02,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-04 15:28:02,241 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)] === [2024-06-04 15:28:02,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:02,241 INFO L85 PathProgramCache]: Analyzing trace with hash 527058663, now seen corresponding path program 15 times [2024-06-04 15:28:02,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:02,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274424424] [2024-06-04 15:28:02,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:02,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:02,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:03,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:03,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:03,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274424424] [2024-06-04 15:28:03,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274424424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:03,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:03,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:28:03,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437570769] [2024-06-04 15:28:03,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:03,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:28:03,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:03,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:28:03,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:28:03,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:28:03,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 230 transitions, 1889 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:03,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:03,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:28:03,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:03,616 INFO L124 PetriNetUnfolderBase]: 575/1195 cut-off events. [2024-06-04 15:28:03,616 INFO L125 PetriNetUnfolderBase]: For 122636/122636 co-relation queries the response was YES. [2024-06-04 15:28:03,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6614 conditions, 1195 events. 575/1195 cut-off events. For 122636/122636 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 7419 event pairs, 146 based on Foata normal form. 2/1191 useless extension candidates. Maximal degree in co-relation 6480. Up to 969 conditions per place. [2024-06-04 15:28:03,627 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 189 selfloop transitions, 50 changer transitions 0/243 dead transitions. [2024-06-04 15:28:03,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 243 transitions, 2425 flow [2024-06-04 15:28:03,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:28:03,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:28:03,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-04 15:28:03,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39944903581267216 [2024-06-04 15:28:03,628 INFO L175 Difference]: Start difference. First operand has 324 places, 230 transitions, 1889 flow. Second operand 11 states and 145 transitions. [2024-06-04 15:28:03,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 243 transitions, 2425 flow [2024-06-04 15:28:04,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 243 transitions, 2319 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-04 15:28:04,006 INFO L231 Difference]: Finished difference. Result has 324 places, 231 transitions, 1921 flow [2024-06-04 15:28:04,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1783, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1921, PETRI_PLACES=324, PETRI_TRANSITIONS=231} [2024-06-04 15:28:04,006 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 292 predicate places. [2024-06-04 15:28:04,006 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 231 transitions, 1921 flow [2024-06-04 15:28:04,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:04,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:04,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:04,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-04 15:28:04,007 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)] === [2024-06-04 15:28:04,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:04,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1158026221, now seen corresponding path program 16 times [2024-06-04 15:28:04,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:04,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068288791] [2024-06-04 15:28:04,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:04,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:04,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:05,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:05,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:05,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068288791] [2024-06-04 15:28:05,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068288791] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:05,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:05,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:28:05,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642906120] [2024-06-04 15:28:05,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:05,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:28:05,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:05,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:28:05,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:28:05,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:28:05,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 231 transitions, 1921 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:05,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:05,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:28:05,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:05,569 INFO L124 PetriNetUnfolderBase]: 579/1201 cut-off events. [2024-06-04 15:28:05,569 INFO L125 PetriNetUnfolderBase]: For 125502/125502 co-relation queries the response was YES. [2024-06-04 15:28:05,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6719 conditions, 1201 events. 579/1201 cut-off events. For 125502/125502 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 7499 event pairs, 129 based on Foata normal form. 2/1193 useless extension candidates. Maximal degree in co-relation 6584. Up to 903 conditions per place. [2024-06-04 15:28:05,580 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 174 selfloop transitions, 67 changer transitions 0/245 dead transitions. [2024-06-04 15:28:05,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 245 transitions, 2465 flow [2024-06-04 15:28:05,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:28:05,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:28:05,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 149 transitions. [2024-06-04 15:28:05,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41046831955922863 [2024-06-04 15:28:05,581 INFO L175 Difference]: Start difference. First operand has 324 places, 231 transitions, 1921 flow. Second operand 11 states and 149 transitions. [2024-06-04 15:28:05,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 245 transitions, 2465 flow [2024-06-04 15:28:05,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 245 transitions, 2337 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-04 15:28:05,926 INFO L231 Difference]: Finished difference. Result has 326 places, 232 transitions, 1967 flow [2024-06-04 15:28:05,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1793, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1967, PETRI_PLACES=326, PETRI_TRANSITIONS=232} [2024-06-04 15:28:05,926 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 294 predicate places. [2024-06-04 15:28:05,927 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 232 transitions, 1967 flow [2024-06-04 15:28:05,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:05,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:05,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:05,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-04 15:28:05,927 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)] === [2024-06-04 15:28:05,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:05,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1300129291, now seen corresponding path program 17 times [2024-06-04 15:28:05,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:05,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417495920] [2024-06-04 15:28:05,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:05,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:05,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:06,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:06,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:06,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417495920] [2024-06-04 15:28:06,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417495920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:06,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:06,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:28:06,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24023008] [2024-06-04 15:28:06,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:06,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:28:06,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:06,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:28:06,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:28:07,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:28:07,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 232 transitions, 1967 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:07,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:07,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:28:07,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:07,402 INFO L124 PetriNetUnfolderBase]: 583/1209 cut-off events. [2024-06-04 15:28:07,402 INFO L125 PetriNetUnfolderBase]: For 127977/127977 co-relation queries the response was YES. [2024-06-04 15:28:07,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6817 conditions, 1209 events. 583/1209 cut-off events. For 127977/127977 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 7532 event pairs, 131 based on Foata normal form. 2/1201 useless extension candidates. Maximal degree in co-relation 6681. Up to 776 conditions per place. [2024-06-04 15:28:07,411 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 172 selfloop transitions, 72 changer transitions 0/248 dead transitions. [2024-06-04 15:28:07,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 248 transitions, 2739 flow [2024-06-04 15:28:07,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:28:07,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:28:07,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 151 transitions. [2024-06-04 15:28:07,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41597796143250687 [2024-06-04 15:28:07,412 INFO L175 Difference]: Start difference. First operand has 326 places, 232 transitions, 1967 flow. Second operand 11 states and 151 transitions. [2024-06-04 15:28:07,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 248 transitions, 2739 flow [2024-06-04 15:28:07,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 248 transitions, 2575 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-04 15:28:07,721 INFO L231 Difference]: Finished difference. Result has 328 places, 233 transitions, 1987 flow [2024-06-04 15:28:07,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1803, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1987, PETRI_PLACES=328, PETRI_TRANSITIONS=233} [2024-06-04 15:28:07,721 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 296 predicate places. [2024-06-04 15:28:07,721 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 233 transitions, 1987 flow [2024-06-04 15:28:07,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:07,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:07,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:07,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-04 15:28:07,722 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)] === [2024-06-04 15:28:07,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:07,722 INFO L85 PathProgramCache]: Analyzing trace with hash -2042257931, now seen corresponding path program 18 times [2024-06-04 15:28:07,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:07,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969035807] [2024-06-04 15:28:07,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:07,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:07,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:08,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:08,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:08,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969035807] [2024-06-04 15:28:08,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969035807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:08,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:08,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:28:08,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626095593] [2024-06-04 15:28:08,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:08,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:28:08,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:08,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:28:08,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:28:08,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:28:08,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 233 transitions, 1987 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:08,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:08,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:28:08,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:08,918 INFO L124 PetriNetUnfolderBase]: 587/1219 cut-off events. [2024-06-04 15:28:08,918 INFO L125 PetriNetUnfolderBase]: For 130628/130628 co-relation queries the response was YES. [2024-06-04 15:28:08,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6896 conditions, 1219 events. 587/1219 cut-off events. For 130628/130628 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 7592 event pairs, 152 based on Foata normal form. 2/1215 useless extension candidates. Maximal degree in co-relation 6759. Up to 993 conditions per place. [2024-06-04 15:28:08,930 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 191 selfloop transitions, 51 changer transitions 0/246 dead transitions. [2024-06-04 15:28:08,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 246 transitions, 2535 flow [2024-06-04 15:28:08,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:28:08,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:28:08,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-04 15:28:08,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4049586776859504 [2024-06-04 15:28:08,930 INFO L175 Difference]: Start difference. First operand has 328 places, 233 transitions, 1987 flow. Second operand 11 states and 147 transitions. [2024-06-04 15:28:08,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 246 transitions, 2535 flow [2024-06-04 15:28:09,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 246 transitions, 2335 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-06-04 15:28:09,260 INFO L231 Difference]: Finished difference. Result has 329 places, 234 transitions, 1933 flow [2024-06-04 15:28:09,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1794, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1933, PETRI_PLACES=329, PETRI_TRANSITIONS=234} [2024-06-04 15:28:09,260 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 297 predicate places. [2024-06-04 15:28:09,260 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 234 transitions, 1933 flow [2024-06-04 15:28:09,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:09,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:09,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:09,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-04 15:28:09,261 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)] === [2024-06-04 15:28:09,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:09,261 INFO L85 PathProgramCache]: Analyzing trace with hash 2058769955, now seen corresponding path program 19 times [2024-06-04 15:28:09,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:09,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927674645] [2024-06-04 15:28:09,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:09,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:09,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:10,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:10,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:10,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927674645] [2024-06-04 15:28:10,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927674645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:10,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:10,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:28:10,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448716272] [2024-06-04 15:28:10,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:10,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:28:10,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:10,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:28:10,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:28:10,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:28:10,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 234 transitions, 1933 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:10,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:10,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:28:10,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:10,590 INFO L124 PetriNetUnfolderBase]: 591/1227 cut-off events. [2024-06-04 15:28:10,590 INFO L125 PetriNetUnfolderBase]: For 132450/132450 co-relation queries the response was YES. [2024-06-04 15:28:10,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6787 conditions, 1227 events. 591/1227 cut-off events. For 132450/132450 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 7661 event pairs, 154 based on Foata normal form. 2/1223 useless extension candidates. Maximal degree in co-relation 6651. Up to 1001 conditions per place. [2024-06-04 15:28:10,601 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 191 selfloop transitions, 52 changer transitions 0/247 dead transitions. [2024-06-04 15:28:10,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 247 transitions, 2478 flow [2024-06-04 15:28:10,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:28:10,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:28:10,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-04 15:28:10,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39669421487603307 [2024-06-04 15:28:10,602 INFO L175 Difference]: Start difference. First operand has 329 places, 234 transitions, 1933 flow. Second operand 11 states and 144 transitions. [2024-06-04 15:28:10,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 247 transitions, 2478 flow [2024-06-04 15:28:10,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 247 transitions, 2316 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-04 15:28:10,970 INFO L231 Difference]: Finished difference. Result has 330 places, 235 transitions, 1914 flow [2024-06-04 15:28:10,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1771, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1914, PETRI_PLACES=330, PETRI_TRANSITIONS=235} [2024-06-04 15:28:10,971 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 298 predicate places. [2024-06-04 15:28:10,971 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 235 transitions, 1914 flow [2024-06-04 15:28:10,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:10,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:10,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:10,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-04 15:28:10,971 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)] === [2024-06-04 15:28:10,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:10,971 INFO L85 PathProgramCache]: Analyzing trace with hash 2053263425, now seen corresponding path program 20 times [2024-06-04 15:28:10,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:10,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220481958] [2024-06-04 15:28:10,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:10,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:10,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:11,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:11,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:11,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220481958] [2024-06-04 15:28:11,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220481958] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:11,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:11,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:28:11,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005737647] [2024-06-04 15:28:11,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:11,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:28:11,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:11,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:28:11,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:28:11,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:28:11,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 235 transitions, 1914 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:11,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:11,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:28:11,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:12,321 INFO L124 PetriNetUnfolderBase]: 595/1235 cut-off events. [2024-06-04 15:28:12,321 INFO L125 PetriNetUnfolderBase]: For 134870/134870 co-relation queries the response was YES. [2024-06-04 15:28:12,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6771 conditions, 1235 events. 595/1235 cut-off events. For 134870/134870 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 7725 event pairs, 154 based on Foata normal form. 2/1231 useless extension candidates. Maximal degree in co-relation 6635. Up to 956 conditions per place. [2024-06-04 15:28:12,332 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 191 selfloop transitions, 55 changer transitions 0/250 dead transitions. [2024-06-04 15:28:12,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 250 transitions, 2693 flow [2024-06-04 15:28:12,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:28:12,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:28:12,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-04 15:28:12,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40771349862258954 [2024-06-04 15:28:12,333 INFO L175 Difference]: Start difference. First operand has 330 places, 235 transitions, 1914 flow. Second operand 11 states and 148 transitions. [2024-06-04 15:28:12,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 250 transitions, 2693 flow [2024-06-04 15:28:12,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 250 transitions, 2561 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-04 15:28:12,718 INFO L231 Difference]: Finished difference. Result has 332 places, 236 transitions, 1931 flow [2024-06-04 15:28:12,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1782, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1931, PETRI_PLACES=332, PETRI_TRANSITIONS=236} [2024-06-04 15:28:12,718 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 300 predicate places. [2024-06-04 15:28:12,719 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 236 transitions, 1931 flow [2024-06-04 15:28:12,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:12,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:12,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:12,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-04 15:28:12,719 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)] === [2024-06-04 15:28:12,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:12,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1501313305, now seen corresponding path program 21 times [2024-06-04 15:28:12,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:12,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816206768] [2024-06-04 15:28:12,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:12,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:12,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:13,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:13,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:13,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816206768] [2024-06-04 15:28:13,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816206768] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:13,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:13,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:28:13,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436200413] [2024-06-04 15:28:13,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:13,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:28:13,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:13,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:28:13,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:28:13,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:28:13,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 236 transitions, 1931 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:13,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:13,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:28:13,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:14,018 INFO L124 PetriNetUnfolderBase]: 592/1230 cut-off events. [2024-06-04 15:28:14,018 INFO L125 PetriNetUnfolderBase]: For 124432/124432 co-relation queries the response was YES. [2024-06-04 15:28:14,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6488 conditions, 1230 events. 592/1230 cut-off events. For 124432/124432 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 7694 event pairs, 155 based on Foata normal form. 2/1226 useless extension candidates. Maximal degree in co-relation 6351. Up to 1004 conditions per place. [2024-06-04 15:28:14,029 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 182 selfloop transitions, 62 changer transitions 0/248 dead transitions. [2024-06-04 15:28:14,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 248 transitions, 2445 flow [2024-06-04 15:28:14,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:28:14,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:28:14,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-04 15:28:14,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-04 15:28:14,030 INFO L175 Difference]: Start difference. First operand has 332 places, 236 transitions, 1931 flow. Second operand 12 states and 154 transitions. [2024-06-04 15:28:14,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 248 transitions, 2445 flow [2024-06-04 15:28:14,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 248 transitions, 2233 flow, removed 30 selfloop flow, removed 10 redundant places. [2024-06-04 15:28:14,435 INFO L231 Difference]: Finished difference. Result has 334 places, 236 transitions, 1847 flow [2024-06-04 15:28:14,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1719, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1847, PETRI_PLACES=334, PETRI_TRANSITIONS=236} [2024-06-04 15:28:14,436 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 302 predicate places. [2024-06-04 15:28:14,436 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 236 transitions, 1847 flow [2024-06-04 15:28:14,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:14,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:14,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:14,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-04 15:28:14,436 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)] === [2024-06-04 15:28:14,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:14,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1818431493, now seen corresponding path program 4 times [2024-06-04 15:28:14,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:14,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606201631] [2024-06-04 15:28:14,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:14,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:14,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:15,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:15,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:15,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606201631] [2024-06-04 15:28:15,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606201631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:15,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:15,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:28:15,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313304404] [2024-06-04 15:28:15,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:15,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:28:15,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:15,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:28:15,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:28:15,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:28:15,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 236 transitions, 1847 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:15,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:15,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:28:15,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:16,055 INFO L124 PetriNetUnfolderBase]: 604/1262 cut-off events. [2024-06-04 15:28:16,055 INFO L125 PetriNetUnfolderBase]: For 161027/161027 co-relation queries the response was YES. [2024-06-04 15:28:16,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6492 conditions, 1262 events. 604/1262 cut-off events. For 161027/161027 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7950 event pairs, 163 based on Foata normal form. 8/1264 useless extension candidates. Maximal degree in co-relation 6355. Up to 1008 conditions per place. [2024-06-04 15:28:16,067 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 191 selfloop transitions, 47 changer transitions 9/251 dead transitions. [2024-06-04 15:28:16,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 251 transitions, 2431 flow [2024-06-04 15:28:16,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:28:16,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:28:16,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 160 transitions. [2024-06-04 15:28:16,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40404040404040403 [2024-06-04 15:28:16,068 INFO L175 Difference]: Start difference. First operand has 334 places, 236 transitions, 1847 flow. Second operand 12 states and 160 transitions. [2024-06-04 15:28:16,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 251 transitions, 2431 flow [2024-06-04 15:28:16,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 251 transitions, 2297 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 15:28:16,481 INFO L231 Difference]: Finished difference. Result has 335 places, 233 transitions, 1793 flow [2024-06-04 15:28:16,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1713, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1793, PETRI_PLACES=335, PETRI_TRANSITIONS=233} [2024-06-04 15:28:16,481 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 303 predicate places. [2024-06-04 15:28:16,481 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 233 transitions, 1793 flow [2024-06-04 15:28:16,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:16,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:16,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:16,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-04 15:28:16,482 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)] === [2024-06-04 15:28:16,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:16,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1818757923, now seen corresponding path program 5 times [2024-06-04 15:28:16,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:16,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973840975] [2024-06-04 15:28:16,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:16,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:16,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:17,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:17,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:17,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973840975] [2024-06-04 15:28:17,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973840975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:17,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:17,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:28:17,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400429213] [2024-06-04 15:28:17,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:17,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:28:17,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:17,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:28:17,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:28:17,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:28:17,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 233 transitions, 1793 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:17,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:17,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:28:17,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:17,954 INFO L124 PetriNetUnfolderBase]: 595/1247 cut-off events. [2024-06-04 15:28:17,954 INFO L125 PetriNetUnfolderBase]: For 150644/150644 co-relation queries the response was YES. [2024-06-04 15:28:17,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6389 conditions, 1247 events. 595/1247 cut-off events. For 150644/150644 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 7844 event pairs, 142 based on Foata normal form. 6/1243 useless extension candidates. Maximal degree in co-relation 6251. Up to 946 conditions per place. [2024-06-04 15:28:17,966 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 172 selfloop transitions, 60 changer transitions 12/248 dead transitions. [2024-06-04 15:28:17,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 248 transitions, 2353 flow [2024-06-04 15:28:17,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:28:17,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:28:17,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 159 transitions. [2024-06-04 15:28:17,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4015151515151515 [2024-06-04 15:28:17,966 INFO L175 Difference]: Start difference. First operand has 335 places, 233 transitions, 1793 flow. Second operand 12 states and 159 transitions. [2024-06-04 15:28:17,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 248 transitions, 2353 flow [2024-06-04 15:28:18,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 248 transitions, 2255 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 15:28:18,408 INFO L231 Difference]: Finished difference. Result has 333 places, 229 transitions, 1793 flow [2024-06-04 15:28:18,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1695, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1793, PETRI_PLACES=333, PETRI_TRANSITIONS=229} [2024-06-04 15:28:18,408 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 301 predicate places. [2024-06-04 15:28:18,408 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 229 transitions, 1793 flow [2024-06-04 15:28:18,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:18,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:18,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:18,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-04 15:28:18,408 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)] === [2024-06-04 15:28:18,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:18,409 INFO L85 PathProgramCache]: Analyzing trace with hash 800010049, now seen corresponding path program 6 times [2024-06-04 15:28:18,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:18,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911363174] [2024-06-04 15:28:18,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:18,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:18,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:19,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:19,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:19,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911363174] [2024-06-04 15:28:19,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911363174] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:19,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:19,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:28:19,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784864333] [2024-06-04 15:28:19,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:19,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:28:19,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:19,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:28:19,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:28:19,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:28:19,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 229 transitions, 1793 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:19,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:19,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:28:19,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:19,913 INFO L124 PetriNetUnfolderBase]: 609/1273 cut-off events. [2024-06-04 15:28:19,913 INFO L125 PetriNetUnfolderBase]: For 196513/196513 co-relation queries the response was YES. [2024-06-04 15:28:19,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7513 conditions, 1273 events. 609/1273 cut-off events. For 196513/196513 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 7999 event pairs, 152 based on Foata normal form. 6/1269 useless extension candidates. Maximal degree in co-relation 7376. Up to 926 conditions per place. [2024-06-04 15:28:19,924 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 169 selfloop transitions, 69 changer transitions 6/248 dead transitions. [2024-06-04 15:28:19,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 248 transitions, 2645 flow [2024-06-04 15:28:19,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:28:19,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:28:19,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 164 transitions. [2024-06-04 15:28:19,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41414141414141414 [2024-06-04 15:28:19,925 INFO L175 Difference]: Start difference. First operand has 333 places, 229 transitions, 1793 flow. Second operand 12 states and 164 transitions. [2024-06-04 15:28:19,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 248 transitions, 2645 flow [2024-06-04 15:28:20,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 248 transitions, 2499 flow, removed 13 selfloop flow, removed 11 redundant places. [2024-06-04 15:28:20,578 INFO L231 Difference]: Finished difference. Result has 327 places, 227 transitions, 1790 flow [2024-06-04 15:28:20,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1661, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1790, PETRI_PLACES=327, PETRI_TRANSITIONS=227} [2024-06-04 15:28:20,578 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 295 predicate places. [2024-06-04 15:28:20,578 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 227 transitions, 1790 flow [2024-06-04 15:28:20,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:20,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:20,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:20,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-04 15:28:20,579 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:20,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:20,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1801505827, now seen corresponding path program 7 times [2024-06-04 15:28:20,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:20,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901954597] [2024-06-04 15:28:20,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:20,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:20,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:21,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:21,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:21,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901954597] [2024-06-04 15:28:21,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901954597] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:21,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:21,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:28:21,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697998229] [2024-06-04 15:28:21,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:21,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:28:21,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:21,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:28:21,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:28:21,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:28:21,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 227 transitions, 1790 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:21,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:21,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:28:21,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:21,993 INFO L124 PetriNetUnfolderBase]: 585/1221 cut-off events. [2024-06-04 15:28:21,993 INFO L125 PetriNetUnfolderBase]: For 154672/154672 co-relation queries the response was YES. [2024-06-04 15:28:22,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6290 conditions, 1221 events. 585/1221 cut-off events. For 154672/154672 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 7642 event pairs, 146 based on Foata normal form. 8/1219 useless extension candidates. Maximal degree in co-relation 6156. Up to 926 conditions per place. [2024-06-04 15:28:22,003 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 160 selfloop transitions, 65 changer transitions 13/242 dead transitions. [2024-06-04 15:28:22,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 242 transitions, 2352 flow [2024-06-04 15:28:22,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:28:22,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:28:22,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 159 transitions. [2024-06-04 15:28:22,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4015151515151515 [2024-06-04 15:28:22,004 INFO L175 Difference]: Start difference. First operand has 327 places, 227 transitions, 1790 flow. Second operand 12 states and 159 transitions. [2024-06-04 15:28:22,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 242 transitions, 2352 flow [2024-06-04 15:28:22,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 242 transitions, 2212 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 15:28:22,443 INFO L231 Difference]: Finished difference. Result has 326 places, 222 transitions, 1751 flow [2024-06-04 15:28:22,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1650, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1751, PETRI_PLACES=326, PETRI_TRANSITIONS=222} [2024-06-04 15:28:22,443 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 294 predicate places. [2024-06-04 15:28:22,444 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 222 transitions, 1751 flow [2024-06-04 15:28:22,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:22,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:22,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:22,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-04 15:28:22,444 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)] === [2024-06-04 15:28:22,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:22,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1235400699, now seen corresponding path program 8 times [2024-06-04 15:28:22,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:22,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55028135] [2024-06-04 15:28:22,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:22,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:22,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:23,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:23,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:23,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55028135] [2024-06-04 15:28:23,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55028135] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:23,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:23,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:28:23,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347754881] [2024-06-04 15:28:23,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:23,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:28:23,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:23,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:28:23,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:28:23,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:28:23,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 222 transitions, 1751 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:23,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:23,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:28:23,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:24,053 INFO L124 PetriNetUnfolderBase]: 578/1212 cut-off events. [2024-06-04 15:28:24,053 INFO L125 PetriNetUnfolderBase]: For 151797/151797 co-relation queries the response was YES. [2024-06-04 15:28:24,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6221 conditions, 1212 events. 578/1212 cut-off events. For 151797/151797 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 7555 event pairs, 165 based on Foata normal form. 8/1214 useless extension candidates. Maximal degree in co-relation 6088. Up to 968 conditions per place. [2024-06-04 15:28:24,063 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 167 selfloop transitions, 57 changer transitions 9/237 dead transitions. [2024-06-04 15:28:24,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 237 transitions, 2303 flow [2024-06-04 15:28:24,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:28:24,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:28:24,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 158 transitions. [2024-06-04 15:28:24,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.398989898989899 [2024-06-04 15:28:24,064 INFO L175 Difference]: Start difference. First operand has 326 places, 222 transitions, 1751 flow. Second operand 12 states and 158 transitions. [2024-06-04 15:28:24,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 237 transitions, 2303 flow [2024-06-04 15:28:24,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 237 transitions, 2157 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-04 15:28:24,446 INFO L231 Difference]: Finished difference. Result has 319 places, 219 transitions, 1709 flow [2024-06-04 15:28:24,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1609, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1709, PETRI_PLACES=319, PETRI_TRANSITIONS=219} [2024-06-04 15:28:24,446 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 287 predicate places. [2024-06-04 15:28:24,446 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 219 transitions, 1709 flow [2024-06-04 15:28:24,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:24,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:24,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:24,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-04 15:28:24,447 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)] === [2024-06-04 15:28:24,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:24,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1235074269, now seen corresponding path program 9 times [2024-06-04 15:28:24,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:24,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487511690] [2024-06-04 15:28:24,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:24,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:24,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:25,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:25,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:25,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487511690] [2024-06-04 15:28:25,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487511690] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:25,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:25,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:28:25,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203205805] [2024-06-04 15:28:25,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:25,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:28:25,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:25,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:28:25,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:28:25,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:28:25,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 219 transitions, 1709 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:25,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:25,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:28:25,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:25,844 INFO L124 PetriNetUnfolderBase]: 569/1193 cut-off events. [2024-06-04 15:28:25,844 INFO L125 PetriNetUnfolderBase]: For 130782/130782 co-relation queries the response was YES. [2024-06-04 15:28:25,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6041 conditions, 1193 events. 569/1193 cut-off events. For 130782/130782 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 7456 event pairs, 140 based on Foata normal form. 6/1189 useless extension candidates. Maximal degree in co-relation 5911. Up to 906 conditions per place. [2024-06-04 15:28:25,854 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 142 selfloop transitions, 76 changer transitions 12/234 dead transitions. [2024-06-04 15:28:25,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 234 transitions, 2237 flow [2024-06-04 15:28:25,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:28:25,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:28:25,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 157 transitions. [2024-06-04 15:28:25,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39646464646464646 [2024-06-04 15:28:25,856 INFO L175 Difference]: Start difference. First operand has 319 places, 219 transitions, 1709 flow. Second operand 12 states and 157 transitions. [2024-06-04 15:28:25,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 234 transitions, 2237 flow [2024-06-04 15:28:26,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 234 transitions, 2119 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 15:28:26,200 INFO L231 Difference]: Finished difference. Result has 317 places, 215 transitions, 1721 flow [2024-06-04 15:28:26,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1591, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1721, PETRI_PLACES=317, PETRI_TRANSITIONS=215} [2024-06-04 15:28:26,200 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 285 predicate places. [2024-06-04 15:28:26,200 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 215 transitions, 1721 flow [2024-06-04 15:28:26,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:26,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:26,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:26,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-04 15:28:26,201 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)] === [2024-06-04 15:28:26,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:26,201 INFO L85 PathProgramCache]: Analyzing trace with hash -418151389, now seen corresponding path program 10 times [2024-06-04 15:28:26,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:26,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522632749] [2024-06-04 15:28:26,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:26,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:26,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:27,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:27,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:27,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522632749] [2024-06-04 15:28:27,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522632749] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:27,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:27,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:28:27,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081704755] [2024-06-04 15:28:27,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:27,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:28:27,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:27,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:28:27,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:28:27,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:28:27,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 215 transitions, 1721 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:27,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:27,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:28:27,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:27,743 INFO L124 PetriNetUnfolderBase]: 565/1188 cut-off events. [2024-06-04 15:28:27,744 INFO L125 PetriNetUnfolderBase]: For 141127/141127 co-relation queries the response was YES. [2024-06-04 15:28:27,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6058 conditions, 1188 events. 565/1188 cut-off events. For 141127/141127 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 7370 event pairs, 212 based on Foata normal form. 8/1194 useless extension candidates. Maximal degree in co-relation 5929. Up to 1064 conditions per place. [2024-06-04 15:28:27,754 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 202 selfloop transitions, 15 changer transitions 9/230 dead transitions. [2024-06-04 15:28:27,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 230 transitions, 2255 flow [2024-06-04 15:28:27,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:28:27,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:28:27,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-04 15:28:27,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37373737373737376 [2024-06-04 15:28:27,755 INFO L175 Difference]: Start difference. First operand has 317 places, 215 transitions, 1721 flow. Second operand 12 states and 148 transitions. [2024-06-04 15:28:27,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 230 transitions, 2255 flow [2024-06-04 15:28:28,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 230 transitions, 2087 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-04 15:28:28,071 INFO L231 Difference]: Finished difference. Result has 311 places, 212 transitions, 1573 flow [2024-06-04 15:28:28,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1557, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1573, PETRI_PLACES=311, PETRI_TRANSITIONS=212} [2024-06-04 15:28:28,071 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 279 predicate places. [2024-06-04 15:28:28,071 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 212 transitions, 1573 flow [2024-06-04 15:28:28,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:28,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:28,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:28,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-04 15:28:28,072 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:28,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:28,072 INFO L85 PathProgramCache]: Analyzing trace with hash -417824959, now seen corresponding path program 11 times [2024-06-04 15:28:28,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:28,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178454280] [2024-06-04 15:28:28,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:28,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:28,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:29,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:29,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:29,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178454280] [2024-06-04 15:28:29,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178454280] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:29,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:29,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:28:29,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612724012] [2024-06-04 15:28:29,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:29,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:28:29,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:29,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:28:29,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:28:29,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:28:29,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 212 transitions, 1573 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:29,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:29,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:28:29,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:29,519 INFO L124 PetriNetUnfolderBase]: 556/1175 cut-off events. [2024-06-04 15:28:29,519 INFO L125 PetriNetUnfolderBase]: For 121137/121137 co-relation queries the response was YES. [2024-06-04 15:28:29,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5781 conditions, 1175 events. 556/1175 cut-off events. For 121137/121137 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 7287 event pairs, 208 based on Foata normal form. 6/1179 useless extension candidates. Maximal degree in co-relation 5655. Up to 1054 conditions per place. [2024-06-04 15:28:29,528 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 199 selfloop transitions, 12 changer transitions 12/227 dead transitions. [2024-06-04 15:28:29,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 227 transitions, 2085 flow [2024-06-04 15:28:29,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:28:29,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:28:29,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-04 15:28:29,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3686868686868687 [2024-06-04 15:28:29,528 INFO L175 Difference]: Start difference. First operand has 311 places, 212 transitions, 1573 flow. Second operand 12 states and 146 transitions. [2024-06-04 15:28:29,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 227 transitions, 2085 flow [2024-06-04 15:28:29,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 227 transitions, 2051 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 15:28:29,831 INFO L231 Difference]: Finished difference. Result has 309 places, 208 transitions, 1542 flow [2024-06-04 15:28:29,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1539, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1542, PETRI_PLACES=309, PETRI_TRANSITIONS=208} [2024-06-04 15:28:29,831 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 277 predicate places. [2024-06-04 15:28:29,832 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 208 transitions, 1542 flow [2024-06-04 15:28:29,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:29,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:29,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:29,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-04 15:28:29,832 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:29,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:29,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1603496739, now seen corresponding path program 12 times [2024-06-04 15:28:29,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:29,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014770510] [2024-06-04 15:28:29,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:29,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:29,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:30,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:30,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:30,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014770510] [2024-06-04 15:28:30,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014770510] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:30,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:30,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:28:30,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890774612] [2024-06-04 15:28:30,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:30,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:28:30,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:30,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:28:30,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:28:30,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:28:30,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 208 transitions, 1542 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:30,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:30,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:28:30,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:31,260 INFO L124 PetriNetUnfolderBase]: 570/1201 cut-off events. [2024-06-04 15:28:31,260 INFO L125 PetriNetUnfolderBase]: For 157555/157555 co-relation queries the response was YES. [2024-06-04 15:28:31,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6740 conditions, 1201 events. 570/1201 cut-off events. For 157555/157555 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 7439 event pairs, 220 based on Foata normal form. 6/1205 useless extension candidates. Maximal degree in co-relation 6615. Up to 1031 conditions per place. [2024-06-04 15:28:31,271 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 201 selfloop transitions, 16 changer transitions 6/227 dead transitions. [2024-06-04 15:28:31,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 227 transitions, 2310 flow [2024-06-04 15:28:31,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:28:31,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:28:31,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-04 15:28:31,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3838383838383838 [2024-06-04 15:28:31,274 INFO L175 Difference]: Start difference. First operand has 309 places, 208 transitions, 1542 flow. Second operand 12 states and 152 transitions. [2024-06-04 15:28:31,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 227 transitions, 2310 flow [2024-06-04 15:28:31,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 227 transitions, 2266 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-04 15:28:31,705 INFO L231 Difference]: Finished difference. Result has 304 places, 206 transitions, 1531 flow [2024-06-04 15:28:31,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1508, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1531, PETRI_PLACES=304, PETRI_TRANSITIONS=206} [2024-06-04 15:28:31,706 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 272 predicate places. [2024-06-04 15:28:31,706 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 206 transitions, 1531 flow [2024-06-04 15:28:31,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:31,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:31,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:31,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-04 15:28:31,707 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:31,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:31,707 INFO L85 PathProgramCache]: Analyzing trace with hash 546043239, now seen corresponding path program 13 times [2024-06-04 15:28:31,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:31,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086128049] [2024-06-04 15:28:31,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:31,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:31,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:32,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:32,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:32,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086128049] [2024-06-04 15:28:32,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086128049] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:32,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:32,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:28:32,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217374451] [2024-06-04 15:28:32,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:32,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:28:32,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:32,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:28:32,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:28:32,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:28:32,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 206 transitions, 1531 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:32,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:32,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:28:32,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:33,219 INFO L124 PetriNetUnfolderBase]: 546/1149 cut-off events. [2024-06-04 15:28:33,220 INFO L125 PetriNetUnfolderBase]: For 124241/124241 co-relation queries the response was YES. [2024-06-04 15:28:33,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5656 conditions, 1149 events. 546/1149 cut-off events. For 124241/124241 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 7077 event pairs, 212 based on Foata normal form. 8/1155 useless extension candidates. Maximal degree in co-relation 5533. Up to 1031 conditions per place. [2024-06-04 15:28:33,228 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 193 selfloop transitions, 13 changer transitions 11/221 dead transitions. [2024-06-04 15:28:33,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 221 transitions, 2041 flow [2024-06-04 15:28:33,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:28:33,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:28:33,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-04 15:28:33,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3712121212121212 [2024-06-04 15:28:33,229 INFO L175 Difference]: Start difference. First operand has 304 places, 206 transitions, 1531 flow. Second operand 12 states and 147 transitions. [2024-06-04 15:28:33,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 221 transitions, 2041 flow [2024-06-04 15:28:33,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 221 transitions, 2007 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 15:28:33,512 INFO L231 Difference]: Finished difference. Result has 303 places, 202 transitions, 1501 flow [2024-06-04 15:28:33,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1497, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1501, PETRI_PLACES=303, PETRI_TRANSITIONS=202} [2024-06-04 15:28:33,512 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 271 predicate places. [2024-06-04 15:28:33,513 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 202 transitions, 1501 flow [2024-06-04 15:28:33,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:33,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:33,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:33,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-04 15:28:33,513 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:33,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:33,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1974394689, now seen corresponding path program 14 times [2024-06-04 15:28:33,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:33,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551525549] [2024-06-04 15:28:33,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:33,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:33,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:34,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:34,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:34,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551525549] [2024-06-04 15:28:34,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551525549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:34,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:34,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:28:34,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351147930] [2024-06-04 15:28:34,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:34,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:28:34,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:34,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:28:34,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:28:34,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:28:34,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 202 transitions, 1501 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:34,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:34,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:28:34,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:34,949 INFO L124 PetriNetUnfolderBase]: 529/1118 cut-off events. [2024-06-04 15:28:34,949 INFO L125 PetriNetUnfolderBase]: For 101837/101837 co-relation queries the response was YES. [2024-06-04 15:28:34,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5237 conditions, 1118 events. 529/1118 cut-off events. For 101837/101837 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 6813 event pairs, 203 based on Foata normal form. 6/1122 useless extension candidates. Maximal degree in co-relation 5115. Up to 1000 conditions per place. [2024-06-04 15:28:34,959 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 189 selfloop transitions, 10 changer transitions 15/218 dead transitions. [2024-06-04 15:28:34,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 218 transitions, 1995 flow [2024-06-04 15:28:34,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:28:34,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:28:34,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-04 15:28:34,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3661616161616162 [2024-06-04 15:28:34,960 INFO L175 Difference]: Start difference. First operand has 303 places, 202 transitions, 1501 flow. Second operand 12 states and 145 transitions. [2024-06-04 15:28:34,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 218 transitions, 1995 flow [2024-06-04 15:28:35,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 218 transitions, 1957 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-04 15:28:35,202 INFO L231 Difference]: Finished difference. Result has 298 places, 197 transitions, 1461 flow [2024-06-04 15:28:35,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1465, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1461, PETRI_PLACES=298, PETRI_TRANSITIONS=197} [2024-06-04 15:28:35,202 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 266 predicate places. [2024-06-04 15:28:35,202 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 197 transitions, 1461 flow [2024-06-04 15:28:35,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:35,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:35,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:35,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-04 15:28:35,203 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:35,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:35,203 INFO L85 PathProgramCache]: Analyzing trace with hash -698363613, now seen corresponding path program 22 times [2024-06-04 15:28:35,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:35,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745024693] [2024-06-04 15:28:35,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:35,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:35,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:36,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:36,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:36,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745024693] [2024-06-04 15:28:36,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745024693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:36,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:36,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:28:36,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026254033] [2024-06-04 15:28:36,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:36,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:28:36,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:36,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:28:36,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:28:36,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:28:36,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 197 transitions, 1461 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:36,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:36,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:28:36,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:36,593 INFO L124 PetriNetUnfolderBase]: 513/1075 cut-off events. [2024-06-04 15:28:36,594 INFO L125 PetriNetUnfolderBase]: For 82887/82887 co-relation queries the response was YES. [2024-06-04 15:28:36,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5052 conditions, 1075 events. 513/1075 cut-off events. For 82887/82887 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 6446 event pairs, 131 based on Foata normal form. 2/1075 useless extension candidates. Maximal degree in co-relation 4932. Up to 972 conditions per place. [2024-06-04 15:28:36,602 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 185 selfloop transitions, 25 changer transitions 0/214 dead transitions. [2024-06-04 15:28:36,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 214 transitions, 1944 flow [2024-06-04 15:28:36,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:28:36,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:28:36,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-04 15:28:36,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-04 15:28:36,603 INFO L175 Difference]: Start difference. First operand has 298 places, 197 transitions, 1461 flow. Second operand 12 states and 153 transitions. [2024-06-04 15:28:36,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 214 transitions, 1944 flow [2024-06-04 15:28:36,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 214 transitions, 1914 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-04 15:28:36,840 INFO L231 Difference]: Finished difference. Result has 291 places, 198 transitions, 1510 flow [2024-06-04 15:28:36,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1431, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1510, PETRI_PLACES=291, PETRI_TRANSITIONS=198} [2024-06-04 15:28:36,840 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 259 predicate places. [2024-06-04 15:28:36,840 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 198 transitions, 1510 flow [2024-06-04 15:28:36,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:36,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:36,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:36,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-04 15:28:36,841 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:36,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:36,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1916434893, now seen corresponding path program 23 times [2024-06-04 15:28:36,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:36,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893772590] [2024-06-04 15:28:36,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:36,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:36,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:37,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:37,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:37,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893772590] [2024-06-04 15:28:37,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893772590] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:37,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:37,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:28:37,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475105663] [2024-06-04 15:28:37,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:37,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:28:37,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:37,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:28:37,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:28:37,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:28:37,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 198 transitions, 1510 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:37,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:37,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:28:37,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:38,237 INFO L124 PetriNetUnfolderBase]: 517/1083 cut-off events. [2024-06-04 15:28:38,237 INFO L125 PetriNetUnfolderBase]: For 78423/78423 co-relation queries the response was YES. [2024-06-04 15:28:38,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5093 conditions, 1083 events. 517/1083 cut-off events. For 78423/78423 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 6499 event pairs, 129 based on Foata normal form. 2/1083 useless extension candidates. Maximal degree in co-relation 4976. Up to 966 conditions per place. [2024-06-04 15:28:38,246 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 186 selfloop transitions, 26 changer transitions 0/216 dead transitions. [2024-06-04 15:28:38,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 216 transitions, 2001 flow [2024-06-04 15:28:38,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:28:38,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:28:38,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 155 transitions. [2024-06-04 15:28:38,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39141414141414144 [2024-06-04 15:28:38,246 INFO L175 Difference]: Start difference. First operand has 291 places, 198 transitions, 1510 flow. Second operand 12 states and 155 transitions. [2024-06-04 15:28:38,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 216 transitions, 2001 flow [2024-06-04 15:28:38,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 216 transitions, 1933 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-04 15:28:38,445 INFO L231 Difference]: Finished difference. Result has 293 places, 199 transitions, 1525 flow [2024-06-04 15:28:38,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1442, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1525, PETRI_PLACES=293, PETRI_TRANSITIONS=199} [2024-06-04 15:28:38,446 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 261 predicate places. [2024-06-04 15:28:38,446 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 199 transitions, 1525 flow [2024-06-04 15:28:38,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:38,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:38,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:38,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-04 15:28:38,446 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:38,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:38,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1205947525, now seen corresponding path program 15 times [2024-06-04 15:28:38,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:38,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957871004] [2024-06-04 15:28:38,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:38,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:38,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:39,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:39,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:39,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957871004] [2024-06-04 15:28:39,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957871004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:39,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:39,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:28:39,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866762021] [2024-06-04 15:28:39,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:39,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:28:39,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:39,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:28:39,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:28:39,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:28:39,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 199 transitions, 1525 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:39,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:39,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:28:39,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:39,914 INFO L124 PetriNetUnfolderBase]: 507/1064 cut-off events. [2024-06-04 15:28:39,915 INFO L125 PetriNetUnfolderBase]: For 71190/71190 co-relation queries the response was YES. [2024-06-04 15:28:39,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4261 conditions, 1064 events. 507/1064 cut-off events. For 71190/71190 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 6424 event pairs, 125 based on Foata normal form. 8/1069 useless extension candidates. Maximal degree in co-relation 4143. Up to 888 conditions per place. [2024-06-04 15:28:39,923 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 160 selfloop transitions, 41 changer transitions 12/217 dead transitions. [2024-06-04 15:28:39,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 217 transitions, 2001 flow [2024-06-04 15:28:39,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 15:28:39,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 15:28:39,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 168 transitions. [2024-06-04 15:28:39,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3916083916083916 [2024-06-04 15:28:39,924 INFO L175 Difference]: Start difference. First operand has 293 places, 199 transitions, 1525 flow. Second operand 13 states and 168 transitions. [2024-06-04 15:28:39,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 217 transitions, 2001 flow [2024-06-04 15:28:40,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 217 transitions, 1929 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-04 15:28:40,045 INFO L231 Difference]: Finished difference. Result has 297 places, 193 transitions, 1477 flow [2024-06-04 15:28:40,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1453, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1477, PETRI_PLACES=297, PETRI_TRANSITIONS=193} [2024-06-04 15:28:40,045 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 265 predicate places. [2024-06-04 15:28:40,045 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 193 transitions, 1477 flow [2024-06-04 15:28:40,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:40,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:40,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:40,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-04 15:28:40,046 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:40,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:40,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1205507393, now seen corresponding path program 24 times [2024-06-04 15:28:40,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:40,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693022728] [2024-06-04 15:28:40,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:40,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:40,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:40,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:40,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:40,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693022728] [2024-06-04 15:28:40,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693022728] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:40,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:40,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:28:40,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378098330] [2024-06-04 15:28:40,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:40,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:28:40,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:40,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:28:40,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:28:41,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:28:41,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 193 transitions, 1477 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:41,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:41,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:28:41,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:41,367 INFO L124 PetriNetUnfolderBase]: 500/1050 cut-off events. [2024-06-04 15:28:41,367 INFO L125 PetriNetUnfolderBase]: For 71925/71925 co-relation queries the response was YES. [2024-06-04 15:28:41,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4194 conditions, 1050 events. 500/1050 cut-off events. For 71925/71925 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 6276 event pairs, 141 based on Foata normal form. 8/1056 useless extension candidates. Maximal degree in co-relation 4075. Up to 925 conditions per place. [2024-06-04 15:28:41,375 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 178 selfloop transitions, 23 changer transitions 8/213 dead transitions. [2024-06-04 15:28:41,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 213 transitions, 1976 flow [2024-06-04 15:28:41,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:28:41,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:28:41,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 155 transitions. [2024-06-04 15:28:41,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39141414141414144 [2024-06-04 15:28:41,376 INFO L175 Difference]: Start difference. First operand has 297 places, 193 transitions, 1477 flow. Second operand 12 states and 155 transitions. [2024-06-04 15:28:41,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 213 transitions, 1976 flow [2024-06-04 15:28:41,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 213 transitions, 1860 flow, removed 16 selfloop flow, removed 13 redundant places. [2024-06-04 15:28:41,498 INFO L231 Difference]: Finished difference. Result has 289 places, 191 transitions, 1406 flow [2024-06-04 15:28:41,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1369, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1406, PETRI_PLACES=289, PETRI_TRANSITIONS=191} [2024-06-04 15:28:41,498 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 257 predicate places. [2024-06-04 15:28:41,498 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 191 transitions, 1406 flow [2024-06-04 15:28:41,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:41,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:41,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:41,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-04 15:28:41,499 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:41,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:41,499 INFO L85 PathProgramCache]: Analyzing trace with hash 47279613, now seen corresponding path program 25 times [2024-06-04 15:28:41,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:41,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155260528] [2024-06-04 15:28:41,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:41,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:41,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:42,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:42,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:42,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155260528] [2024-06-04 15:28:42,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155260528] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:42,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:42,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:28:42,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227344431] [2024-06-04 15:28:42,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:42,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:28:42,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:42,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:28:42,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:28:42,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:28:42,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 191 transitions, 1406 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:42,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:42,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:28:42,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:42,891 INFO L124 PetriNetUnfolderBase]: 482/1012 cut-off events. [2024-06-04 15:28:42,891 INFO L125 PetriNetUnfolderBase]: For 34851/34851 co-relation queries the response was YES. [2024-06-04 15:28:42,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3701 conditions, 1012 events. 482/1012 cut-off events. For 34851/34851 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 6075 event pairs, 129 based on Foata normal form. 2/1012 useless extension candidates. Maximal degree in co-relation 3588. Up to 906 conditions per place. [2024-06-04 15:28:42,897 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 180 selfloop transitions, 25 changer transitions 0/209 dead transitions. [2024-06-04 15:28:42,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 209 transitions, 1860 flow [2024-06-04 15:28:42,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:28:42,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:28:42,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-04 15:28:42,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-04 15:28:42,898 INFO L175 Difference]: Start difference. First operand has 289 places, 191 transitions, 1406 flow. Second operand 12 states and 153 transitions. [2024-06-04 15:28:42,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 209 transitions, 1860 flow [2024-06-04 15:28:42,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 209 transitions, 1798 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-04 15:28:42,980 INFO L231 Difference]: Finished difference. Result has 288 places, 191 transitions, 1398 flow [2024-06-04 15:28:42,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1344, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1398, PETRI_PLACES=288, PETRI_TRANSITIONS=191} [2024-06-04 15:28:42,980 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 256 predicate places. [2024-06-04 15:28:42,981 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 191 transitions, 1398 flow [2024-06-04 15:28:42,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:42,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:42,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:42,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-04 15:28:42,981 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:42,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:42,981 INFO L85 PathProgramCache]: Analyzing trace with hash 739297833, now seen corresponding path program 1 times [2024-06-04 15:28:42,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:42,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580892773] [2024-06-04 15:28:42,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:42,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:42,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:44,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:44,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:44,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580892773] [2024-06-04 15:28:44,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580892773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:44,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:44,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:28:44,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970242206] [2024-06-04 15:28:44,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:44,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:28:44,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:44,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:28:44,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:28:44,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:28:44,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 191 transitions, 1398 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:44,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:44,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:28:44,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:44,734 INFO L124 PetriNetUnfolderBase]: 505/1065 cut-off events. [2024-06-04 15:28:44,734 INFO L125 PetriNetUnfolderBase]: For 76868/76868 co-relation queries the response was YES. [2024-06-04 15:28:44,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4353 conditions, 1065 events. 505/1065 cut-off events. For 76868/76868 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 6380 event pairs, 150 based on Foata normal form. 6/1069 useless extension candidates. Maximal degree in co-relation 4240. Up to 819 conditions per place. [2024-06-04 15:28:44,742 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 166 selfloop transitions, 28 changer transitions 15/213 dead transitions. [2024-06-04 15:28:44,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 213 transitions, 2052 flow [2024-06-04 15:28:44,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:28:44,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:28:44,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 158 transitions. [2024-06-04 15:28:44,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.398989898989899 [2024-06-04 15:28:44,743 INFO L175 Difference]: Start difference. First operand has 288 places, 191 transitions, 1398 flow. Second operand 12 states and 158 transitions. [2024-06-04 15:28:44,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 213 transitions, 2052 flow [2024-06-04 15:28:44,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 213 transitions, 1923 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-04 15:28:44,862 INFO L231 Difference]: Finished difference. Result has 288 places, 184 transitions, 1282 flow [2024-06-04 15:28:44,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1269, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1282, PETRI_PLACES=288, PETRI_TRANSITIONS=184} [2024-06-04 15:28:44,862 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 256 predicate places. [2024-06-04 15:28:44,862 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 184 transitions, 1282 flow [2024-06-04 15:28:44,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:44,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:44,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:44,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-04 15:28:44,863 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:44,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:44,863 INFO L85 PathProgramCache]: Analyzing trace with hash 910000263, now seen corresponding path program 2 times [2024-06-04 15:28:44,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:44,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008034210] [2024-06-04 15:28:44,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:44,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:44,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:45,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:45,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:45,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008034210] [2024-06-04 15:28:45,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008034210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:45,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:45,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:28:45,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043525525] [2024-06-04 15:28:45,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:45,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:28:45,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:45,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:28:45,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:28:46,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:28:46,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 184 transitions, 1282 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:46,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:46,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:28:46,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:46,544 INFO L124 PetriNetUnfolderBase]: 466/988 cut-off events. [2024-06-04 15:28:46,544 INFO L125 PetriNetUnfolderBase]: For 52640/52640 co-relation queries the response was YES. [2024-06-04 15:28:46,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3466 conditions, 988 events. 466/988 cut-off events. For 52640/52640 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 5894 event pairs, 135 based on Foata normal form. 6/992 useless extension candidates. Maximal degree in co-relation 3352. Up to 819 conditions per place. [2024-06-04 15:28:46,551 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 155 selfloop transitions, 24 changer transitions 19/202 dead transitions. [2024-06-04 15:28:46,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 202 transitions, 1720 flow [2024-06-04 15:28:46,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:28:46,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:28:46,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-04 15:28:46,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3813131313131313 [2024-06-04 15:28:46,552 INFO L175 Difference]: Start difference. First operand has 288 places, 184 transitions, 1282 flow. Second operand 12 states and 151 transitions. [2024-06-04 15:28:46,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 202 transitions, 1720 flow [2024-06-04 15:28:46,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 202 transitions, 1652 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-06-04 15:28:46,634 INFO L231 Difference]: Finished difference. Result has 280 places, 175 transitions, 1191 flow [2024-06-04 15:28:46,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1214, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1191, PETRI_PLACES=280, PETRI_TRANSITIONS=175} [2024-06-04 15:28:46,635 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 248 predicate places. [2024-06-04 15:28:46,635 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 175 transitions, 1191 flow [2024-06-04 15:28:46,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:46,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:46,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:46,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-04 15:28:46,635 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:46,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:46,636 INFO L85 PathProgramCache]: Analyzing trace with hash 832516487, now seen corresponding path program 3 times [2024-06-04 15:28:46,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:46,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571005125] [2024-06-04 15:28:46,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:46,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:46,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:47,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:47,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:47,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571005125] [2024-06-04 15:28:47,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571005125] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:47,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:47,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:28:47,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957652750] [2024-06-04 15:28:47,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:47,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:28:47,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:47,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:28:47,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:28:47,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:28:47,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 175 transitions, 1191 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:47,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:47,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:28:47,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:48,258 INFO L124 PetriNetUnfolderBase]: 446/948 cut-off events. [2024-06-04 15:28:48,258 INFO L125 PetriNetUnfolderBase]: For 48224/48224 co-relation queries the response was YES. [2024-06-04 15:28:48,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3290 conditions, 948 events. 446/948 cut-off events. For 48224/48224 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 5568 event pairs, 133 based on Foata normal form. 6/952 useless extension candidates. Maximal degree in co-relation 3180. Up to 799 conditions per place. [2024-06-04 15:28:48,264 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 152 selfloop transitions, 20 changer transitions 17/193 dead transitions. [2024-06-04 15:28:48,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 193 transitions, 1611 flow [2024-06-04 15:28:48,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:28:48,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:28:48,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-04 15:28:48,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3838383838383838 [2024-06-04 15:28:48,265 INFO L175 Difference]: Start difference. First operand has 280 places, 175 transitions, 1191 flow. Second operand 12 states and 152 transitions. [2024-06-04 15:28:48,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 193 transitions, 1611 flow [2024-06-04 15:28:48,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 193 transitions, 1549 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-04 15:28:48,340 INFO L231 Difference]: Finished difference. Result has 269 places, 167 transitions, 1118 flow [2024-06-04 15:28:48,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1129, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1118, PETRI_PLACES=269, PETRI_TRANSITIONS=167} [2024-06-04 15:28:48,341 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 237 predicate places. [2024-06-04 15:28:48,341 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 167 transitions, 1118 flow [2024-06-04 15:28:48,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:48,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:48,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:48,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-04 15:28:48,341 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:48,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:48,342 INFO L85 PathProgramCache]: Analyzing trace with hash -2002440859, now seen corresponding path program 4 times [2024-06-04 15:28:48,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:48,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15208991] [2024-06-04 15:28:48,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:48,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:48,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:49,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:49,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:49,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15208991] [2024-06-04 15:28:49,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15208991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:49,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:49,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:28:49,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80185858] [2024-06-04 15:28:49,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:49,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:28:49,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:49,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:28:49,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:28:49,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:28:49,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 167 transitions, 1118 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:49,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:49,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:28:49,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:49,971 INFO L124 PetriNetUnfolderBase]: 430/912 cut-off events. [2024-06-04 15:28:49,971 INFO L125 PetriNetUnfolderBase]: For 46071/46071 co-relation queries the response was YES. [2024-06-04 15:28:49,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3164 conditions, 912 events. 430/912 cut-off events. For 46071/46071 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 5286 event pairs, 125 based on Foata normal form. 6/916 useless extension candidates. Maximal degree in co-relation 3056. Up to 723 conditions per place. [2024-06-04 15:28:49,977 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 147 selfloop transitions, 18 changer transitions 18/187 dead transitions. [2024-06-04 15:28:49,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 187 transitions, 1530 flow [2024-06-04 15:28:49,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:28:49,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:28:49,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-04 15:28:49,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-04 15:28:49,978 INFO L175 Difference]: Start difference. First operand has 269 places, 167 transitions, 1118 flow. Second operand 12 states and 154 transitions. [2024-06-04 15:28:49,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 187 transitions, 1530 flow [2024-06-04 15:28:50,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 187 transitions, 1455 flow, removed 3 selfloop flow, removed 14 redundant places. [2024-06-04 15:28:50,037 INFO L231 Difference]: Finished difference. Result has 260 places, 159 transitions, 1038 flow [2024-06-04 15:28:50,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1043, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1038, PETRI_PLACES=260, PETRI_TRANSITIONS=159} [2024-06-04 15:28:50,038 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 228 predicate places. [2024-06-04 15:28:50,038 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 159 transitions, 1038 flow [2024-06-04 15:28:50,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:50,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:50,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:50,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-04 15:28:50,038 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:50,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:50,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1868869053, now seen corresponding path program 5 times [2024-06-04 15:28:50,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:50,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873631468] [2024-06-04 15:28:50,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:50,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:50,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:51,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:51,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:51,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873631468] [2024-06-04 15:28:51,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873631468] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:51,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:51,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:28:51,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046996677] [2024-06-04 15:28:51,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:51,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:28:51,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:51,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:28:51,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:28:51,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:28:51,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 159 transitions, 1038 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:51,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:51,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:28:51,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:51,909 INFO L124 PetriNetUnfolderBase]: 408/866 cut-off events. [2024-06-04 15:28:51,909 INFO L125 PetriNetUnfolderBase]: For 43828/43828 co-relation queries the response was YES. [2024-06-04 15:28:51,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3008 conditions, 866 events. 408/866 cut-off events. For 43828/43828 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4944 event pairs, 125 based on Foata normal form. 6/870 useless extension candidates. Maximal degree in co-relation 2902. Up to 743 conditions per place. [2024-06-04 15:28:51,915 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 142 selfloop transitions, 16 changer transitions 15/177 dead transitions. [2024-06-04 15:28:51,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 177 transitions, 1426 flow [2024-06-04 15:28:51,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:28:51,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:28:51,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-04 15:28:51,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37373737373737376 [2024-06-04 15:28:51,915 INFO L175 Difference]: Start difference. First operand has 260 places, 159 transitions, 1038 flow. Second operand 12 states and 148 transitions. [2024-06-04 15:28:51,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 177 transitions, 1426 flow [2024-06-04 15:28:51,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 177 transitions, 1380 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-04 15:28:51,979 INFO L231 Difference]: Finished difference. Result has 251 places, 153 transitions, 991 flow [2024-06-04 15:28:51,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=992, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=991, PETRI_PLACES=251, PETRI_TRANSITIONS=153} [2024-06-04 15:28:51,979 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 219 predicate places. [2024-06-04 15:28:51,979 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 153 transitions, 991 flow [2024-06-04 15:28:51,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:51,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:51,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:51,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-04 15:28:51,979 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:51,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:51,980 INFO L85 PathProgramCache]: Analyzing trace with hash -137390167, now seen corresponding path program 6 times [2024-06-04 15:28:51,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:51,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932342755] [2024-06-04 15:28:51,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:51,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:51,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:53,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:53,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:53,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932342755] [2024-06-04 15:28:53,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932342755] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:53,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:53,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:28:53,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980450588] [2024-06-04 15:28:53,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:53,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:28:53,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:53,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:28:53,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:28:53,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:28:53,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 153 transitions, 991 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:53,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:53,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:28:53,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:53,501 INFO L124 PetriNetUnfolderBase]: 394/840 cut-off events. [2024-06-04 15:28:53,501 INFO L125 PetriNetUnfolderBase]: For 39814/39814 co-relation queries the response was YES. [2024-06-04 15:28:53,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2896 conditions, 840 events. 394/840 cut-off events. For 39814/39814 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4759 event pairs, 121 based on Foata normal form. 6/844 useless extension candidates. Maximal degree in co-relation 2794. Up to 715 conditions per place. [2024-06-04 15:28:53,507 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 136 selfloop transitions, 8 changer transitions 24/172 dead transitions. [2024-06-04 15:28:53,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 172 transitions, 1371 flow [2024-06-04 15:28:53,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:28:53,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:28:53,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-04 15:28:53,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37373737373737376 [2024-06-04 15:28:53,508 INFO L175 Difference]: Start difference. First operand has 251 places, 153 transitions, 991 flow. Second operand 12 states and 148 transitions. [2024-06-04 15:28:53,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 172 transitions, 1371 flow [2024-06-04 15:28:53,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 172 transitions, 1312 flow, removed 4 selfloop flow, removed 15 redundant places. [2024-06-04 15:28:53,558 INFO L231 Difference]: Finished difference. Result has 240 places, 142 transitions, 888 flow [2024-06-04 15:28:53,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=932, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=888, PETRI_PLACES=240, PETRI_TRANSITIONS=142} [2024-06-04 15:28:53,558 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 208 predicate places. [2024-06-04 15:28:53,558 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 142 transitions, 888 flow [2024-06-04 15:28:53,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:53,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:53,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:53,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-04 15:28:53,559 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:53,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:53,559 INFO L85 PathProgramCache]: Analyzing trace with hash 2101619881, now seen corresponding path program 7 times [2024-06-04 15:28:53,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:53,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988622825] [2024-06-04 15:28:53,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:53,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:53,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:54,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:54,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:54,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988622825] [2024-06-04 15:28:54,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988622825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:54,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:54,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:28:54,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499088005] [2024-06-04 15:28:54,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:54,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:28:54,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:54,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:28:54,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:28:54,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:28:54,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 142 transitions, 888 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:54,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:54,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:28:54,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:55,094 INFO L124 PetriNetUnfolderBase]: 372/790 cut-off events. [2024-06-04 15:28:55,095 INFO L125 PetriNetUnfolderBase]: For 36949/36949 co-relation queries the response was YES. [2024-06-04 15:28:55,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2703 conditions, 790 events. 372/790 cut-off events. For 36949/36949 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4372 event pairs, 101 based on Foata normal form. 6/794 useless extension candidates. Maximal degree in co-relation 2604. Up to 600 conditions per place. [2024-06-04 15:28:55,099 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 112 selfloop transitions, 30 changer transitions 16/162 dead transitions. [2024-06-04 15:28:55,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 162 transitions, 1252 flow [2024-06-04 15:28:55,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:28:55,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:28:55,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-04 15:28:55,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-04 15:28:55,100 INFO L175 Difference]: Start difference. First operand has 240 places, 142 transitions, 888 flow. Second operand 12 states and 154 transitions. [2024-06-04 15:28:55,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 162 transitions, 1252 flow [2024-06-04 15:28:55,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 162 transitions, 1213 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-04 15:28:55,145 INFO L231 Difference]: Finished difference. Result has 224 places, 132 transitions, 858 flow [2024-06-04 15:28:55,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=849, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=858, PETRI_PLACES=224, PETRI_TRANSITIONS=132} [2024-06-04 15:28:55,145 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 192 predicate places. [2024-06-04 15:28:55,146 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 132 transitions, 858 flow [2024-06-04 15:28:55,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:55,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:55,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:55,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-04 15:28:55,146 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:55,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:55,146 INFO L85 PathProgramCache]: Analyzing trace with hash 2101792861, now seen corresponding path program 8 times [2024-06-04 15:28:55,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:55,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085143429] [2024-06-04 15:28:55,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:55,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:55,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:56,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:56,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:56,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085143429] [2024-06-04 15:28:56,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085143429] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:56,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:56,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:28:56,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21531893] [2024-06-04 15:28:56,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:56,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:28:56,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:56,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:28:56,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:28:56,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:28:56,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 132 transitions, 858 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:56,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:56,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:28:56,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:56,742 INFO L124 PetriNetUnfolderBase]: 341/733 cut-off events. [2024-06-04 15:28:56,742 INFO L125 PetriNetUnfolderBase]: For 32370/32370 co-relation queries the response was YES. [2024-06-04 15:28:56,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2551 conditions, 733 events. 341/733 cut-off events. For 32370/32370 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3987 event pairs, 103 based on Foata normal form. 6/737 useless extension candidates. Maximal degree in co-relation 2457. Up to 592 conditions per place. [2024-06-04 15:28:56,747 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 107 selfloop transitions, 24 changer transitions 16/151 dead transitions. [2024-06-04 15:28:56,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 151 transitions, 1198 flow [2024-06-04 15:28:56,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:28:56,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:28:56,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-04 15:28:56,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3813131313131313 [2024-06-04 15:28:56,748 INFO L175 Difference]: Start difference. First operand has 224 places, 132 transitions, 858 flow. Second operand 12 states and 151 transitions. [2024-06-04 15:28:56,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 151 transitions, 1198 flow [2024-06-04 15:28:56,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 151 transitions, 1120 flow, removed 5 selfloop flow, removed 18 redundant places. [2024-06-04 15:28:56,795 INFO L231 Difference]: Finished difference. Result has 210 places, 124 transitions, 796 flow [2024-06-04 15:28:56,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=780, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=796, PETRI_PLACES=210, PETRI_TRANSITIONS=124} [2024-06-04 15:28:56,795 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 178 predicate places. [2024-06-04 15:28:56,795 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 124 transitions, 796 flow [2024-06-04 15:28:56,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:56,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:56,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:56,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-04 15:28:56,795 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:56,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:56,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1426248773, now seen corresponding path program 9 times [2024-06-04 15:28:56,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:56,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61369541] [2024-06-04 15:28:56,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:56,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:56,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:57,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:57,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:57,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61369541] [2024-06-04 15:28:57,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61369541] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:57,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:57,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:28:57,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424241912] [2024-06-04 15:28:57,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:57,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:28:57,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:57,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:28:57,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:28:58,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:28:58,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 124 transitions, 796 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:58,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:58,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:28:58,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:58,350 INFO L124 PetriNetUnfolderBase]: 325/701 cut-off events. [2024-06-04 15:28:58,350 INFO L125 PetriNetUnfolderBase]: For 28937/28937 co-relation queries the response was YES. [2024-06-04 15:28:58,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2411 conditions, 701 events. 325/701 cut-off events. For 28937/28937 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3771 event pairs, 92 based on Foata normal form. 6/705 useless extension candidates. Maximal degree in co-relation 2321. Up to 530 conditions per place. [2024-06-04 15:28:58,354 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 99 selfloop transitions, 18 changer transitions 24/145 dead transitions. [2024-06-04 15:28:58,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 145 transitions, 1128 flow [2024-06-04 15:28:58,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:28:58,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:28:58,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-04 15:28:58,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3838383838383838 [2024-06-04 15:28:58,355 INFO L175 Difference]: Start difference. First operand has 210 places, 124 transitions, 796 flow. Second operand 12 states and 152 transitions. [2024-06-04 15:28:58,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 145 transitions, 1128 flow [2024-06-04 15:28:58,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 145 transitions, 1068 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-04 15:28:58,390 INFO L231 Difference]: Finished difference. Result has 199 places, 111 transitions, 717 flow [2024-06-04 15:28:58,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=736, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=717, PETRI_PLACES=199, PETRI_TRANSITIONS=111} [2024-06-04 15:28:58,394 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 167 predicate places. [2024-06-04 15:28:58,394 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 111 transitions, 717 flow [2024-06-04 15:28:58,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:58,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:58,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:58,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-04 15:28:58,395 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:58,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:58,395 INFO L85 PathProgramCache]: Analyzing trace with hash 13078997, now seen corresponding path program 10 times [2024-06-04 15:28:58,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:58,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411270010] [2024-06-04 15:28:58,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:58,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:58,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:59,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:59,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:59,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411270010] [2024-06-04 15:28:59,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411270010] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:59,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:59,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:28:59,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519575698] [2024-06-04 15:28:59,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:59,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:28:59,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:59,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:28:59,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:28:59,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:28:59,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 111 transitions, 717 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:59,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:59,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:28:59,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:00,053 INFO L124 PetriNetUnfolderBase]: 288/630 cut-off events. [2024-06-04 15:29:00,053 INFO L125 PetriNetUnfolderBase]: For 24944/24944 co-relation queries the response was YES. [2024-06-04 15:29:00,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2176 conditions, 630 events. 288/630 cut-off events. For 24944/24944 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3292 event pairs, 85 based on Foata normal form. 6/634 useless extension candidates. Maximal degree in co-relation 2091. Up to 476 conditions per place. [2024-06-04 15:29:00,056 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 92 selfloop transitions, 12 changer transitions 25/133 dead transitions. [2024-06-04 15:29:00,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 133 transitions, 1027 flow [2024-06-04 15:29:00,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:29:00,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:29:00,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-04 15:29:00,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3838383838383838 [2024-06-04 15:29:00,057 INFO L175 Difference]: Start difference. First operand has 199 places, 111 transitions, 717 flow. Second operand 12 states and 152 transitions. [2024-06-04 15:29:00,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 133 transitions, 1027 flow [2024-06-04 15:29:00,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 133 transitions, 973 flow, removed 9 selfloop flow, removed 15 redundant places. [2024-06-04 15:29:00,086 INFO L231 Difference]: Finished difference. Result has 181 places, 99 transitions, 627 flow [2024-06-04 15:29:00,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=663, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=627, PETRI_PLACES=181, PETRI_TRANSITIONS=99} [2024-06-04 15:29:00,087 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 149 predicate places. [2024-06-04 15:29:00,087 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 99 transitions, 627 flow [2024-06-04 15:29:00,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:00,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:00,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:00,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-04 15:29:00,087 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:00,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:00,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1046737945, now seen corresponding path program 11 times [2024-06-04 15:29:00,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:00,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790558873] [2024-06-04 15:29:00,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:00,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:00,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:01,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:01,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:01,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790558873] [2024-06-04 15:29:01,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790558873] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:01,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:01,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:29:01,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021076263] [2024-06-04 15:29:01,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:01,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:29:01,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:01,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:29:01,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:29:01,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:29:01,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 99 transitions, 627 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:01,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:01,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:29:01,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:01,559 INFO L124 PetriNetUnfolderBase]: 255/567 cut-off events. [2024-06-04 15:29:01,559 INFO L125 PetriNetUnfolderBase]: For 19161/19161 co-relation queries the response was YES. [2024-06-04 15:29:01,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1934 conditions, 567 events. 255/567 cut-off events. For 19161/19161 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2860 event pairs, 46 based on Foata normal form. 6/571 useless extension candidates. Maximal degree in co-relation 1857. Up to 311 conditions per place. [2024-06-04 15:29:01,562 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 64 selfloop transitions, 3 changer transitions 51/122 dead transitions. [2024-06-04 15:29:01,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 122 transitions, 917 flow [2024-06-04 15:29:01,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:29:01,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:29:01,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-04 15:29:01,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3813131313131313 [2024-06-04 15:29:01,563 INFO L175 Difference]: Start difference. First operand has 181 places, 99 transitions, 627 flow. Second operand 12 states and 151 transitions. [2024-06-04 15:29:01,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 122 transitions, 917 flow [2024-06-04 15:29:01,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 122 transitions, 877 flow, removed 8 selfloop flow, removed 13 redundant places. [2024-06-04 15:29:01,589 INFO L231 Difference]: Finished difference. Result has 165 places, 70 transitions, 425 flow [2024-06-04 15:29:01,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=587, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=425, PETRI_PLACES=165, PETRI_TRANSITIONS=70} [2024-06-04 15:29:01,590 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 133 predicate places. [2024-06-04 15:29:01,590 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 70 transitions, 425 flow [2024-06-04 15:29:01,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:01,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:01,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:01,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-04 15:29:01,590 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:01,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:01,591 INFO L85 PathProgramCache]: Analyzing trace with hash -4177015, now seen corresponding path program 12 times [2024-06-04 15:29:01,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:01,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55125042] [2024-06-04 15:29:01,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:01,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:01,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:02,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:02,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:02,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55125042] [2024-06-04 15:29:02,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55125042] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:02,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:02,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:29:02,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733452985] [2024-06-04 15:29:02,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:02,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:29:02,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:02,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:29:02,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:29:03,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:29:03,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 70 transitions, 425 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:03,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:03,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:29:03,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:03,232 INFO L124 PetriNetUnfolderBase]: 162/358 cut-off events. [2024-06-04 15:29:03,232 INFO L125 PetriNetUnfolderBase]: For 14472/14472 co-relation queries the response was YES. [2024-06-04 15:29:03,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1280 conditions, 358 events. 162/358 cut-off events. For 14472/14472 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1553 event pairs, 41 based on Foata normal form. 6/363 useless extension candidates. Maximal degree in co-relation 1210. Up to 236 conditions per place. [2024-06-04 15:29:03,234 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 48 selfloop transitions, 19 changer transitions 13/84 dead transitions. [2024-06-04 15:29:03,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 84 transitions, 615 flow [2024-06-04 15:29:03,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:29:03,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:29:03,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-04 15:29:03,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-04 15:29:03,235 INFO L175 Difference]: Start difference. First operand has 165 places, 70 transitions, 425 flow. Second operand 12 states and 143 transitions. [2024-06-04 15:29:03,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 84 transitions, 615 flow [2024-06-04 15:29:03,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 84 transitions, 560 flow, removed 14 selfloop flow, removed 23 redundant places. [2024-06-04 15:29:03,243 INFO L231 Difference]: Finished difference. Result has 120 places, 66 transitions, 391 flow [2024-06-04 15:29:03,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=391, PETRI_PLACES=120, PETRI_TRANSITIONS=66} [2024-06-04 15:29:03,243 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 88 predicate places. [2024-06-04 15:29:03,243 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 66 transitions, 391 flow [2024-06-04 15:29:03,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:03,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:03,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:03,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-04 15:29:03,244 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:03,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:03,244 INFO L85 PathProgramCache]: Analyzing trace with hash -702200867, now seen corresponding path program 13 times [2024-06-04 15:29:03,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:03,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115978359] [2024-06-04 15:29:03,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:03,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:03,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:04,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:04,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:04,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115978359] [2024-06-04 15:29:04,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115978359] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:04,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:04,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:29:04,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571268739] [2024-06-04 15:29:04,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:04,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:29:04,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:04,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:29:04,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:29:04,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:29:04,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 66 transitions, 391 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:04,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:04,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:29:04,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:04,659 INFO L124 PetriNetUnfolderBase]: 151/337 cut-off events. [2024-06-04 15:29:04,660 INFO L125 PetriNetUnfolderBase]: For 8377/8381 co-relation queries the response was YES. [2024-06-04 15:29:04,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1154 conditions, 337 events. 151/337 cut-off events. For 8377/8381 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1442 event pairs, 35 based on Foata normal form. 10/346 useless extension candidates. Maximal degree in co-relation 1102. Up to 196 conditions per place. [2024-06-04 15:29:04,661 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 46 selfloop transitions, 18 changer transitions 13/81 dead transitions. [2024-06-04 15:29:04,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 81 transitions, 577 flow [2024-06-04 15:29:04,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:29:04,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:29:04,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-04 15:29:04,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3661616161616162 [2024-06-04 15:29:04,662 INFO L175 Difference]: Start difference. First operand has 120 places, 66 transitions, 391 flow. Second operand 12 states and 145 transitions. [2024-06-04 15:29:04,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 81 transitions, 577 flow [2024-06-04 15:29:04,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 81 transitions, 527 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 15:29:04,668 INFO L231 Difference]: Finished difference. Result has 114 places, 61 transitions, 357 flow [2024-06-04 15:29:04,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=357, PETRI_PLACES=114, PETRI_TRANSITIONS=61} [2024-06-04 15:29:04,668 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 82 predicate places. [2024-06-04 15:29:04,668 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 61 transitions, 357 flow [2024-06-04 15:29:04,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:04,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:04,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:04,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-04 15:29:04,669 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:04,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:04,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1712977399, now seen corresponding path program 14 times [2024-06-04 15:29:04,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:04,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569061957] [2024-06-04 15:29:04,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:04,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:04,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:05,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:05,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:05,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569061957] [2024-06-04 15:29:05,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569061957] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:05,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:05,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:29:05,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548060921] [2024-06-04 15:29:05,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:05,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:29:05,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:05,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:29:05,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:29:06,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:29:06,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 61 transitions, 357 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:06,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:06,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:29:06,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:06,208 INFO L124 PetriNetUnfolderBase]: 136/306 cut-off events. [2024-06-04 15:29:06,208 INFO L125 PetriNetUnfolderBase]: For 7442/7446 co-relation queries the response was YES. [2024-06-04 15:29:06,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1058 conditions, 306 events. 136/306 cut-off events. For 7442/7446 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1243 event pairs, 35 based on Foata normal form. 10/315 useless extension candidates. Maximal degree in co-relation 1008. Up to 192 conditions per place. [2024-06-04 15:29:06,209 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 41 selfloop transitions, 15 changer transitions 15/75 dead transitions. [2024-06-04 15:29:06,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 75 transitions, 529 flow [2024-06-04 15:29:06,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:29:06,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:29:06,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-04 15:29:06,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35858585858585856 [2024-06-04 15:29:06,210 INFO L175 Difference]: Start difference. First operand has 114 places, 61 transitions, 357 flow. Second operand 12 states and 142 transitions. [2024-06-04 15:29:06,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 75 transitions, 529 flow [2024-06-04 15:29:06,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 75 transitions, 485 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-04 15:29:06,216 INFO L231 Difference]: Finished difference. Result has 107 places, 55 transitions, 319 flow [2024-06-04 15:29:06,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=319, PETRI_PLACES=107, PETRI_TRANSITIONS=55} [2024-06-04 15:29:06,217 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 75 predicate places. [2024-06-04 15:29:06,217 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 55 transitions, 319 flow [2024-06-04 15:29:06,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:06,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:06,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:06,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-04 15:29:06,217 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:06,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:06,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1006688777, now seen corresponding path program 15 times [2024-06-04 15:29:06,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:06,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748009025] [2024-06-04 15:29:06,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:06,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:06,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:07,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:07,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:07,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748009025] [2024-06-04 15:29:07,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748009025] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:07,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:07,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:29:07,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884069887] [2024-06-04 15:29:07,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:07,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:29:07,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:07,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:29:07,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:29:07,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:29:07,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 55 transitions, 319 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:07,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:07,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:29:07,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:08,004 INFO L124 PetriNetUnfolderBase]: 123/277 cut-off events. [2024-06-04 15:29:08,004 INFO L125 PetriNetUnfolderBase]: For 6218/6222 co-relation queries the response was YES. [2024-06-04 15:29:08,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 955 conditions, 277 events. 123/277 cut-off events. For 6218/6222 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1073 event pairs, 33 based on Foata normal form. 10/286 useless extension candidates. Maximal degree in co-relation 908. Up to 174 conditions per place. [2024-06-04 15:29:08,005 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 35 selfloop transitions, 17 changer transitions 13/69 dead transitions. [2024-06-04 15:29:08,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 69 transitions, 479 flow [2024-06-04 15:29:08,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:29:08,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:29:08,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-04 15:29:08,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3560606060606061 [2024-06-04 15:29:08,006 INFO L175 Difference]: Start difference. First operand has 107 places, 55 transitions, 319 flow. Second operand 12 states and 141 transitions. [2024-06-04 15:29:08,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 69 transitions, 479 flow [2024-06-04 15:29:08,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 69 transitions, 433 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-06-04 15:29:08,011 INFO L231 Difference]: Finished difference. Result has 99 places, 51 transitions, 292 flow [2024-06-04 15:29:08,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=292, PETRI_PLACES=99, PETRI_TRANSITIONS=51} [2024-06-04 15:29:08,011 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 67 predicate places. [2024-06-04 15:29:08,011 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 51 transitions, 292 flow [2024-06-04 15:29:08,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:08,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:08,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:08,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-04 15:29:08,012 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:08,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:08,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1011752073, now seen corresponding path program 16 times [2024-06-04 15:29:08,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:08,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290852679] [2024-06-04 15:29:08,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:08,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:08,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:09,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:09,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:09,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290852679] [2024-06-04 15:29:09,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290852679] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:09,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:09,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:29:09,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296539019] [2024-06-04 15:29:09,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:09,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:29:09,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:09,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:29:09,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:29:09,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:29:09,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 51 transitions, 292 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:09,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:09,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:29:09,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:09,707 INFO L124 PetriNetUnfolderBase]: 112/256 cut-off events. [2024-06-04 15:29:09,707 INFO L125 PetriNetUnfolderBase]: For 5474/5478 co-relation queries the response was YES. [2024-06-04 15:29:09,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 881 conditions, 256 events. 112/256 cut-off events. For 5474/5478 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 950 event pairs, 29 based on Foata normal form. 10/265 useless extension candidates. Maximal degree in co-relation 836. Up to 148 conditions per place. [2024-06-04 15:29:09,708 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 31 selfloop transitions, 15 changer transitions 16/66 dead transitions. [2024-06-04 15:29:09,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 66 transitions, 448 flow [2024-06-04 15:29:09,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:29:09,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:29:09,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-04 15:29:09,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3560606060606061 [2024-06-04 15:29:09,709 INFO L175 Difference]: Start difference. First operand has 99 places, 51 transitions, 292 flow. Second operand 12 states and 141 transitions. [2024-06-04 15:29:09,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 66 transitions, 448 flow [2024-06-04 15:29:09,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 66 transitions, 406 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-04 15:29:09,713 INFO L231 Difference]: Finished difference. Result has 93 places, 46 transitions, 261 flow [2024-06-04 15:29:09,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=261, PETRI_PLACES=93, PETRI_TRANSITIONS=46} [2024-06-04 15:29:09,713 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 61 predicate places. [2024-06-04 15:29:09,713 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 46 transitions, 261 flow [2024-06-04 15:29:09,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:09,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:09,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:09,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-04 15:29:09,714 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:09,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:09,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1121979947, now seen corresponding path program 17 times [2024-06-04 15:29:09,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:09,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726426233] [2024-06-04 15:29:09,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:09,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:09,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:11,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:11,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:11,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726426233] [2024-06-04 15:29:11,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726426233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:11,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:11,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:29:11,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064541336] [2024-06-04 15:29:11,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:11,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:29:11,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:11,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:29:11,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:29:11,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:29:11,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 46 transitions, 261 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:11,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:11,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:29:11,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:11,517 INFO L124 PetriNetUnfolderBase]: 97/227 cut-off events. [2024-06-04 15:29:11,517 INFO L125 PetriNetUnfolderBase]: For 4440/4440 co-relation queries the response was YES. [2024-06-04 15:29:11,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 780 conditions, 227 events. 97/227 cut-off events. For 4440/4440 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 792 event pairs, 23 based on Foata normal form. 6/232 useless extension candidates. Maximal degree in co-relation 738. Up to 119 conditions per place. [2024-06-04 15:29:11,518 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 27 selfloop transitions, 12 changer transitions 15/58 dead transitions. [2024-06-04 15:29:11,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 58 transitions, 395 flow [2024-06-04 15:29:11,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:29:11,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:29:11,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-04 15:29:11,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3526170798898072 [2024-06-04 15:29:11,518 INFO L175 Difference]: Start difference. First operand has 93 places, 46 transitions, 261 flow. Second operand 11 states and 128 transitions. [2024-06-04 15:29:11,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 58 transitions, 395 flow [2024-06-04 15:29:11,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 58 transitions, 355 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-04 15:29:11,521 INFO L231 Difference]: Finished difference. Result has 84 places, 39 transitions, 216 flow [2024-06-04 15:29:11,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=216, PETRI_PLACES=84, PETRI_TRANSITIONS=39} [2024-06-04 15:29:11,521 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 52 predicate places. [2024-06-04 15:29:11,521 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 39 transitions, 216 flow [2024-06-04 15:29:11,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:11,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:11,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:11,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-04 15:29:11,522 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:11,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:11,522 INFO L85 PathProgramCache]: Analyzing trace with hash 886072005, now seen corresponding path program 18 times [2024-06-04 15:29:11,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:11,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609678423] [2024-06-04 15:29:11,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:11,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:11,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:12,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:12,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:12,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609678423] [2024-06-04 15:29:12,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609678423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:12,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:12,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:29:12,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748134417] [2024-06-04 15:29:12,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:12,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:29:12,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:12,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:29:12,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:29:12,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:29:12,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 39 transitions, 216 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:12,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:12,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:29:12,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:12,946 INFO L124 PetriNetUnfolderBase]: 77/183 cut-off events. [2024-06-04 15:29:12,946 INFO L125 PetriNetUnfolderBase]: For 3258/3266 co-relation queries the response was YES. [2024-06-04 15:29:12,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 636 conditions, 183 events. 77/183 cut-off events. For 3258/3266 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 573 event pairs, 21 based on Foata normal form. 14/196 useless extension candidates. Maximal degree in co-relation 598. Up to 96 conditions per place. [2024-06-04 15:29:12,947 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 25 selfloop transitions, 10 changer transitions 14/53 dead transitions. [2024-06-04 15:29:12,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 53 transitions, 344 flow [2024-06-04 15:29:12,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:29:12,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:29:12,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-04 15:29:12,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-06-04 15:29:12,947 INFO L175 Difference]: Start difference. First operand has 84 places, 39 transitions, 216 flow. Second operand 12 states and 138 transitions. [2024-06-04 15:29:12,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 53 transitions, 344 flow [2024-06-04 15:29:12,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 53 transitions, 307 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-04 15:29:12,949 INFO L231 Difference]: Finished difference. Result has 74 places, 34 transitions, 179 flow [2024-06-04 15:29:12,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=179, PETRI_PLACES=74, PETRI_TRANSITIONS=34} [2024-06-04 15:29:12,950 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 42 predicate places. [2024-06-04 15:29:12,950 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 34 transitions, 179 flow [2024-06-04 15:29:12,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:12,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:12,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:12,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-04 15:29:12,950 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:12,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:12,950 INFO L85 PathProgramCache]: Analyzing trace with hash -602639847, now seen corresponding path program 19 times [2024-06-04 15:29:12,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:12,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041327194] [2024-06-04 15:29:12,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:12,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:12,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:14,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:14,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:14,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041327194] [2024-06-04 15:29:14,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041327194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:14,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:14,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:29:14,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386454787] [2024-06-04 15:29:14,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:14,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:29:14,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:14,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:29:14,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:29:14,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:29:14,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 34 transitions, 179 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:14,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:14,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:29:14,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:14,527 INFO L124 PetriNetUnfolderBase]: 65/157 cut-off events. [2024-06-04 15:29:14,528 INFO L125 PetriNetUnfolderBase]: For 1980/1984 co-relation queries the response was YES. [2024-06-04 15:29:14,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 533 conditions, 157 events. 65/157 cut-off events. For 1980/1984 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 448 event pairs, 19 based on Foata normal form. 10/166 useless extension candidates. Maximal degree in co-relation 500. Up to 78 conditions per place. [2024-06-04 15:29:14,529 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 21 selfloop transitions, 10 changer transitions 13/48 dead transitions. [2024-06-04 15:29:14,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 48 transitions, 297 flow [2024-06-04 15:29:14,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:29:14,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:29:14,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-04 15:29:14,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3434343434343434 [2024-06-04 15:29:14,530 INFO L175 Difference]: Start difference. First operand has 74 places, 34 transitions, 179 flow. Second operand 12 states and 136 transitions. [2024-06-04 15:29:14,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 48 transitions, 297 flow [2024-06-04 15:29:14,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 48 transitions, 269 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 15:29:14,531 INFO L231 Difference]: Finished difference. Result has 68 places, 30 transitions, 155 flow [2024-06-04 15:29:14,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=155, PETRI_PLACES=68, PETRI_TRANSITIONS=30} [2024-06-04 15:29:14,532 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 36 predicate places. [2024-06-04 15:29:14,532 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 30 transitions, 155 flow [2024-06-04 15:29:14,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:14,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:14,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:14,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-04 15:29:14,532 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:14,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:14,532 INFO L85 PathProgramCache]: Analyzing trace with hash 218375099, now seen corresponding path program 20 times [2024-06-04 15:29:14,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:14,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572061911] [2024-06-04 15:29:14,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:14,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:14,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:15,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:15,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:15,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572061911] [2024-06-04 15:29:15,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572061911] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:15,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:15,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:29:15,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760054459] [2024-06-04 15:29:15,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:15,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:29:15,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:15,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:29:15,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:29:15,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:29:15,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 30 transitions, 155 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:15,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:15,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:29:15,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:15,889 INFO L124 PetriNetUnfolderBase]: 54/136 cut-off events. [2024-06-04 15:29:15,889 INFO L125 PetriNetUnfolderBase]: For 1558/1558 co-relation queries the response was YES. [2024-06-04 15:29:15,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 459 conditions, 136 events. 54/136 cut-off events. For 1558/1558 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 350 event pairs, 6 based on Foata normal form. 6/141 useless extension candidates. Maximal degree in co-relation 428. Up to 38 conditions per place. [2024-06-04 15:29:15,890 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 19 selfloop transitions, 8 changer transitions 14/45 dead transitions. [2024-06-04 15:29:15,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 45 transitions, 269 flow [2024-06-04 15:29:15,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:29:15,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:29:15,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-04 15:29:15,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-04 15:29:15,890 INFO L175 Difference]: Start difference. First operand has 68 places, 30 transitions, 155 flow. Second operand 12 states and 135 transitions. [2024-06-04 15:29:15,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 45 transitions, 269 flow [2024-06-04 15:29:15,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 45 transitions, 241 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-04 15:29:15,892 INFO L231 Difference]: Finished difference. Result has 62 places, 24 transitions, 117 flow [2024-06-04 15:29:15,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=117, PETRI_PLACES=62, PETRI_TRANSITIONS=24} [2024-06-04 15:29:15,892 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 30 predicate places. [2024-06-04 15:29:15,892 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 24 transitions, 117 flow [2024-06-04 15:29:15,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:15,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:15,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:15,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-04 15:29:15,893 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:29:15,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:15,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1528861527, now seen corresponding path program 21 times [2024-06-04 15:29:15,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:15,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782428111] [2024-06-04 15:29:15,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:15,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:15,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:16,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:16,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:16,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782428111] [2024-06-04 15:29:16,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782428111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:16,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:16,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:29:16,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522221275] [2024-06-04 15:29:16,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:16,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:29:16,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:16,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:29:16,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:29:17,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 15:29:17,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 24 transitions, 117 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:17,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:17,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 15:29:17,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:17,277 INFO L124 PetriNetUnfolderBase]: 23/67 cut-off events. [2024-06-04 15:29:17,278 INFO L125 PetriNetUnfolderBase]: For 526/526 co-relation queries the response was YES. [2024-06-04 15:29:17,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 67 events. 23/67 cut-off events. For 526/526 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 95 event pairs, 0 based on Foata normal form. 6/72 useless extension candidates. Maximal degree in co-relation 178. Up to 24 conditions per place. [2024-06-04 15:29:17,278 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 0 selfloop transitions, 0 changer transitions 33/33 dead transitions. [2024-06-04 15:29:17,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 33 transitions, 167 flow [2024-06-04 15:29:17,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:29:17,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:29:17,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-04 15:29:17,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3181818181818182 [2024-06-04 15:29:17,279 INFO L175 Difference]: Start difference. First operand has 62 places, 24 transitions, 117 flow. Second operand 12 states and 126 transitions. [2024-06-04 15:29:17,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 33 transitions, 167 flow [2024-06-04 15:29:17,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 33 transitions, 131 flow, removed 1 selfloop flow, removed 18 redundant places. [2024-06-04 15:29:17,279 INFO L231 Difference]: Finished difference. Result has 46 places, 0 transitions, 0 flow [2024-06-04 15:29:17,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=46, PETRI_TRANSITIONS=0} [2024-06-04 15:29:17,280 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 14 predicate places. [2024-06-04 15:29:17,280 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 0 transitions, 0 flow [2024-06-04 15:29:17,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:17,282 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-04 15:29:17,284 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-04 15:29:17,285 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-04 15:29:17,285 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-04 15:29:17,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-04 15:29:17,286 INFO L445 BasicCegarLoop]: Path program histogram: [26, 25, 21, 15, 12, 9, 7, 7, 5, 5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:17,288 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-04 15:29:17,288 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-04 15:29:17,291 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-04 15:29:17,291 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-04 15:29:17,291 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.06 03:29:17 BasicIcfg [2024-06-04 15:29:17,291 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-04 15:29:17,292 INFO L158 Benchmark]: Toolchain (without parser) took 217653.66ms. Allocated memory was 216.0MB in the beginning and 926.9MB in the end (delta: 710.9MB). Free memory was 183.3MB in the beginning and 860.8MB in the end (delta: -677.5MB). Peak memory consumption was 33.4MB. Max. memory is 16.1GB. [2024-06-04 15:29:17,292 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 134.2MB. Free memory is still 100.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-04 15:29:17,292 INFO L158 Benchmark]: Witness Parser took 0.09ms. Allocated memory is still 216.0MB. Free memory is still 184.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-04 15:29:17,292 INFO L158 Benchmark]: CACSL2BoogieTranslator took 555.48ms. Allocated memory is still 216.0MB. Free memory was 183.3MB in the beginning and 149.7MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-06-04 15:29:17,292 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.84ms. Allocated memory is still 216.0MB. Free memory was 149.7MB in the beginning and 147.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-04 15:29:17,292 INFO L158 Benchmark]: Boogie Preprocessor took 45.95ms. Allocated memory is still 216.0MB. Free memory was 147.6MB in the beginning and 144.4MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-04 15:29:17,292 INFO L158 Benchmark]: RCFGBuilder took 538.23ms. Allocated memory is still 216.0MB. Free memory was 144.4MB in the beginning and 176.3MB in the end (delta: -31.9MB). Peak memory consumption was 51.0MB. Max. memory is 16.1GB. [2024-06-04 15:29:17,293 INFO L158 Benchmark]: TraceAbstraction took 216446.39ms. Allocated memory was 216.0MB in the beginning and 926.9MB in the end (delta: 710.9MB). Free memory was 175.3MB in the beginning and 860.8MB in the end (delta: -685.5MB). Peak memory consumption was 24.3MB. Max. memory is 16.1GB. [2024-06-04 15:29:17,293 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 134.2MB. Free memory is still 100.1MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.09ms. Allocated memory is still 216.0MB. Free memory is still 184.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 555.48ms. Allocated memory is still 216.0MB. Free memory was 183.3MB in the beginning and 149.7MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.84ms. Allocated memory is still 216.0MB. Free memory was 149.7MB in the beginning and 147.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.95ms. Allocated memory is still 216.0MB. Free memory was 147.6MB in the beginning and 144.4MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 538.23ms. Allocated memory is still 216.0MB. Free memory was 144.4MB in the beginning and 176.3MB in the end (delta: -31.9MB). Peak memory consumption was 51.0MB. Max. memory is 16.1GB. * TraceAbstraction took 216446.39ms. Allocated memory was 216.0MB in the beginning and 926.9MB in the end (delta: 710.9MB). Free memory was 175.3MB in the beginning and 860.8MB in the end (delta: -685.5MB). Peak memory consumption was 24.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 818]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 819]: 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, 53 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: 216.4s, OverallIterations: 156, TraceHistogramMax: 1, PathProgramHistogramMax: 26, EmptinessCheckTime: 0.0s, AutomataDifference: 78.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10530 SdHoareTripleChecker+Valid, 34.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8873 mSDsluCounter, 5796 SdHoareTripleChecker+Invalid, 30.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5249 mSDsCounter, 1884 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 64630 IncrementalHoareTripleChecker+Invalid, 66514 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1884 mSolverCounterUnsat, 547 mSDtfsCounter, 64630 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1775 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1775 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4030 ImplicationChecksByTransitivity, 49.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2090occurred in iteration=87, InterpolantAutomatonStates: 1600, 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, 0.8s SatisfiabilityAnalysisTime, 135.9s InterpolantComputationTime, 2866 NumberOfCodeBlocks, 2866 NumberOfCodeBlocksAsserted, 156 NumberOfCheckSat, 2710 ConstructedInterpolants, 0 QuantifiedInterpolants, 125895 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 156 InterpolantComputations, 156 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! [2024-06-04 15:29:17,331 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE