./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi000_tso.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/protection/rfi000_tso.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb4cb34f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/rfi000_tso.i ./goblint.2024-06-19_11-23-25.files/protection/rfi000_tso.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-eb4cb34-m [2024-06-21 15:43:02,400 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-21 15:43:02,490 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-21 15:43:02,496 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-21 15:43:02,497 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-21 15:43:02,532 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-21 15:43:02,534 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-21 15:43:02,535 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-21 15:43:02,535 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-21 15:43:02,539 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-21 15:43:02,539 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-21 15:43:02,540 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-21 15:43:02,541 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-21 15:43:02,542 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-21 15:43:02,542 INFO L153 SettingsManager]: * Use SBE=true [2024-06-21 15:43:02,542 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-21 15:43:02,543 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-21 15:43:02,543 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-21 15:43:02,543 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-21 15:43:02,543 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-21 15:43:02,544 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-21 15:43:02,544 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-21 15:43:02,544 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-21 15:43:02,545 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-21 15:43:02,545 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-21 15:43:02,545 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-21 15:43:02,545 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-21 15:43:02,546 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-21 15:43:02,546 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-21 15:43:02,547 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-21 15:43:02,548 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-21 15:43:02,548 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-21 15:43:02,548 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 15:43:02,548 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-21 15:43:02,548 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-21 15:43:02,549 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-21 15:43:02,549 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-21 15:43:02,549 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-21 15:43:02,549 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-21 15:43:02,549 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-21 15:43:02,550 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-21 15:43:02,550 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-21 15:43:02,550 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-21 15:43:02,550 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-21 15:43:02,809 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-21 15:43:02,837 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-21 15:43:02,839 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-21 15:43:02,840 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-21 15:43:02,841 INFO L274 PluginConnector]: CDTParser initialized [2024-06-21 15:43:02,841 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi000_tso.i [2024-06-21 15:43:04,073 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-21 15:43:04,343 INFO L384 CDTParser]: Found 1 translation units. [2024-06-21 15:43:04,344 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi000_tso.i [2024-06-21 15:43:04,357 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04230611d/fb8f2fe090cc4d439d9b924465138c2d/FLAG848d35bd4 [2024-06-21 15:43:04,369 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04230611d/fb8f2fe090cc4d439d9b924465138c2d [2024-06-21 15:43:04,371 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-21 15:43:04,372 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-21 15:43:04,374 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/rfi000_tso.yml/witness.yml [2024-06-21 15:43:04,526 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-21 15:43:04,528 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-21 15:43:04,531 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-21 15:43:04,531 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-21 15:43:04,536 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-21 15:43:04,537 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 03:43:04" (1/2) ... [2024-06-21 15:43:04,538 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b51831b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 03:43:04, skipping insertion in model container [2024-06-21 15:43:04,538 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 03:43:04" (1/2) ... [2024-06-21 15:43:04,540 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@33920641 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 03:43:04, skipping insertion in model container [2024-06-21 15:43:04,540 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 03:43:04" (2/2) ... [2024-06-21 15:43:04,541 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b51831b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 03:43:04, skipping insertion in model container [2024-06-21 15:43:04,541 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 03:43:04" (2/2) ... [2024-06-21 15:43:04,541 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-21 15:43:04,610 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-21 15:43:04,612 INFO L97 edCorrectnessWitness]: Location invariant before [L829-L829] ((((((((((((((! multithreaded || y$r_buff1_thd0 == (_Bool)0) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2))) && (! multithreaded || y$read_delayed_var == 0) [2024-06-21 15:43:04,612 INFO L97 edCorrectnessWitness]: Location invariant before [L830-L830] ((((((((((((((! multithreaded || y$r_buff1_thd0 == (_Bool)0) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2))) && (! multithreaded || y$read_delayed_var == 0) [2024-06-21 15:43:04,612 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-21 15:43:04,613 INFO L106 edCorrectnessWitness]: ghost_update [L827-L827] multithreaded = 1; [2024-06-21 15:43:04,661 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-21 15:43:05,127 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 15:43:05,141 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-21 15:43:05,238 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 15:43:05,283 INFO L206 MainTranslator]: Completed translation [2024-06-21 15:43:05,285 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 03:43:05 WrapperNode [2024-06-21 15:43:05,285 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-21 15:43:05,290 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-21 15:43:05,290 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-21 15:43:05,291 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-21 15:43:05,299 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 21.06 03:43:05" (1/1) ... [2024-06-21 15:43:05,327 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 21.06 03:43:05" (1/1) ... [2024-06-21 15:43:05,360 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 176 [2024-06-21 15:43:05,367 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-21 15:43:05,368 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-21 15:43:05,368 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-21 15:43:05,368 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-21 15:43:05,377 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 03:43:05" (1/1) ... [2024-06-21 15:43:05,377 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 03:43:05" (1/1) ... [2024-06-21 15:43:05,380 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 03:43:05" (1/1) ... [2024-06-21 15:43:05,398 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]. [2024-06-21 15:43:05,399 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 03:43:05" (1/1) ... [2024-06-21 15:43:05,399 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 03:43:05" (1/1) ... [2024-06-21 15:43:05,408 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 03:43:05" (1/1) ... [2024-06-21 15:43:05,413 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 03:43:05" (1/1) ... [2024-06-21 15:43:05,415 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 03:43:05" (1/1) ... [2024-06-21 15:43:05,416 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 03:43:05" (1/1) ... [2024-06-21 15:43:05,419 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-21 15:43:05,420 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-21 15:43:05,420 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-21 15:43:05,420 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-21 15:43:05,421 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 03:43:05" (1/1) ... [2024-06-21 15:43:05,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 15:43:05,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-21 15:43:05,464 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-21 15:43:05,466 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 [2024-06-21 15:43:05,495 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-21 15:43:05,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-21 15:43:05,495 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-21 15:43:05,496 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-21 15:43:05,496 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-21 15:43:05,496 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-21 15:43:05,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-21 15:43:05,496 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-21 15:43:05,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-21 15:43:05,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-21 15:43:05,498 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-21 15:43:05,628 INFO L244 CfgBuilder]: Building ICFG [2024-06-21 15:43:05,630 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-21 15:43:05,970 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-21 15:43:05,970 INFO L293 CfgBuilder]: Performing block encoding [2024-06-21 15:43:06,211 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-21 15:43:06,211 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-21 15:43:06,213 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 03:43:06 BoogieIcfgContainer [2024-06-21 15:43:06,213 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-21 15:43:06,216 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-21 15:43:06,216 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-21 15:43:06,219 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-21 15:43:06,219 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 03:43:04" (1/4) ... [2024-06-21 15:43:06,221 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b391eb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 03:43:06, skipping insertion in model container [2024-06-21 15:43:06,222 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 03:43:04" (2/4) ... [2024-06-21 15:43:06,222 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b391eb8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 03:43:06, skipping insertion in model container [2024-06-21 15:43:06,222 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 03:43:05" (3/4) ... [2024-06-21 15:43:06,227 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b391eb8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 03:43:06, skipping insertion in model container [2024-06-21 15:43:06,227 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 03:43:06" (4/4) ... [2024-06-21 15:43:06,228 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi000_tso.i [2024-06-21 15:43:06,244 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-21 15:43:06,244 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-21 15:43:06,244 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-21 15:43:06,285 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-21 15:43:06,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 70 flow [2024-06-21 15:43:06,350 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2024-06-21 15:43:06,351 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 15:43:06,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 29 events. 0/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 39 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-21 15:43:06,354 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 31 transitions, 70 flow [2024-06-21 15:43:06,357 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 52 flow [2024-06-21 15:43:06,372 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-21 15:43:06,384 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;@4a53b4e5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-21 15:43:06,385 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-21 15:43:06,391 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-21 15:43:06,391 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-21 15:43:06,392 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 15:43:06,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:06,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-21 15:43:06,393 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)] === [2024-06-21 15:43:06,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:06,398 INFO L85 PathProgramCache]: Analyzing trace with hash 402762543, now seen corresponding path program 1 times [2024-06-21 15:43:06,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:06,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071265294] [2024-06-21 15:43:06,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:06,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:06,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:07,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:07,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:07,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071265294] [2024-06-21 15:43:07,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071265294] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:07,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:07,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-21 15:43:07,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946230398] [2024-06-21 15:43:07,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:07,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-21 15:43:07,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:07,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-21 15:43:07,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-21 15:43:07,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-21 15:43:07,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:07,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:07,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-21 15:43:07,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:07,542 INFO L124 PetriNetUnfolderBase]: 216/386 cut-off events. [2024-06-21 15:43:07,542 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-21 15:43:07,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 787 conditions, 386 events. 216/386 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1374 event pairs, 133 based on Foata normal form. 1/381 useless extension candidates. Maximal degree in co-relation 776. Up to 378 conditions per place. [2024-06-21 15:43:07,550 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 23 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2024-06-21 15:43:07,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 119 flow [2024-06-21 15:43:07,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 15:43:07,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 15:43:07,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2024-06-21 15:43:07,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5268817204301075 [2024-06-21 15:43:07,563 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 52 flow. Second operand 3 states and 49 transitions. [2024-06-21 15:43:07,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 119 flow [2024-06-21 15:43:07,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-21 15:43:07,568 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 71 flow [2024-06-21 15:43:07,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2024-06-21 15:43:07,573 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-06-21 15:43:07,573 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 71 flow [2024-06-21 15:43:07,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:07,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:07,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:07,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-21 15:43:07,575 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)] === [2024-06-21 15:43:07,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:07,576 INFO L85 PathProgramCache]: Analyzing trace with hash 508095192, now seen corresponding path program 1 times [2024-06-21 15:43:07,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:07,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573294948] [2024-06-21 15:43:07,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:07,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:07,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:08,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:08,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:08,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573294948] [2024-06-21 15:43:08,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573294948] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:08,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:08,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-21 15:43:08,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557874131] [2024-06-21 15:43:08,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:08,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 15:43:08,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:08,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 15:43:08,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-21 15:43:08,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-21 15:43:08,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:08,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:08,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-21 15:43:08,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:08,176 INFO L124 PetriNetUnfolderBase]: 213/381 cut-off events. [2024-06-21 15:43:08,177 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2024-06-21 15:43:08,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 877 conditions, 381 events. 213/381 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1343 event pairs, 109 based on Foata normal form. 2/382 useless extension candidates. Maximal degree in co-relation 865. Up to 364 conditions per place. [2024-06-21 15:43:08,180 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 27 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2024-06-21 15:43:08,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 161 flow [2024-06-21 15:43:08,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 15:43:08,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 15:43:08,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 62 transitions. [2024-06-21 15:43:08,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-21 15:43:08,182 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 71 flow. Second operand 4 states and 62 transitions. [2024-06-21 15:43:08,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 161 flow [2024-06-21 15:43:08,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 158 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-21 15:43:08,184 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 95 flow [2024-06-21 15:43:08,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=95, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2024-06-21 15:43:08,185 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2024-06-21 15:43:08,186 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 95 flow [2024-06-21 15:43:08,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:08,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:08,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:08,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-21 15:43:08,187 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:43:08,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:08,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1428917206, now seen corresponding path program 1 times [2024-06-21 15:43:08,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:08,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696300213] [2024-06-21 15:43:08,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:08,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:08,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:08,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:08,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:08,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696300213] [2024-06-21 15:43:08,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696300213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:08,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:08,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 15:43:08,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802935223] [2024-06-21 15:43:08,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:08,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 15:43:08,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:08,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 15:43:08,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-21 15:43:08,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-21 15:43:08,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 95 flow. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:08,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:08,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-21 15:43:08,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:08,779 INFO L124 PetriNetUnfolderBase]: 215/385 cut-off events. [2024-06-21 15:43:08,779 INFO L125 PetriNetUnfolderBase]: For 224/224 co-relation queries the response was YES. [2024-06-21 15:43:08,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 972 conditions, 385 events. 215/385 cut-off events. For 224/224 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1359 event pairs, 53 based on Foata normal form. 6/390 useless extension candidates. Maximal degree in co-relation 958. Up to 320 conditions per place. [2024-06-21 15:43:08,784 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 37 selfloop transitions, 11 changer transitions 0/51 dead transitions. [2024-06-21 15:43:08,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 51 transitions, 261 flow [2024-06-21 15:43:08,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 15:43:08,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 15:43:08,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 83 transitions. [2024-06-21 15:43:08,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.535483870967742 [2024-06-21 15:43:08,788 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 95 flow. Second operand 5 states and 83 transitions. [2024-06-21 15:43:08,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 51 transitions, 261 flow [2024-06-21 15:43:08,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 51 transitions, 252 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-21 15:43:08,792 INFO L231 Difference]: Finished difference. Result has 39 places, 35 transitions, 162 flow [2024-06-21 15:43:08,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=162, PETRI_PLACES=39, PETRI_TRANSITIONS=35} [2024-06-21 15:43:08,794 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2024-06-21 15:43:08,795 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 35 transitions, 162 flow [2024-06-21 15:43:08,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:08,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:08,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:08,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-21 15:43:08,796 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)] === [2024-06-21 15:43:08,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:08,797 INFO L85 PathProgramCache]: Analyzing trace with hash 342448371, now seen corresponding path program 1 times [2024-06-21 15:43:08,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:08,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113225637] [2024-06-21 15:43:08,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:08,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:08,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:09,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:09,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:09,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113225637] [2024-06-21 15:43:09,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113225637] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:09,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:09,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 15:43:09,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570632614] [2024-06-21 15:43:09,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:09,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 15:43:09,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:09,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 15:43:09,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-21 15:43:09,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-21 15:43:09,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 35 transitions, 162 flow. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:09,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:09,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-21 15:43:09,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:09,891 INFO L124 PetriNetUnfolderBase]: 216/388 cut-off events. [2024-06-21 15:43:09,892 INFO L125 PetriNetUnfolderBase]: For 484/484 co-relation queries the response was YES. [2024-06-21 15:43:09,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1168 conditions, 388 events. 216/388 cut-off events. For 484/484 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1382 event pairs, 28 based on Foata normal form. 6/393 useless extension candidates. Maximal degree in co-relation 1151. Up to 297 conditions per place. [2024-06-21 15:43:09,895 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 37 selfloop transitions, 13 changer transitions 0/53 dead transitions. [2024-06-21 15:43:09,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 53 transitions, 312 flow [2024-06-21 15:43:09,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 15:43:09,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 15:43:09,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 92 transitions. [2024-06-21 15:43:09,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4946236559139785 [2024-06-21 15:43:09,897 INFO L175 Difference]: Start difference. First operand has 39 places, 35 transitions, 162 flow. Second operand 6 states and 92 transitions. [2024-06-21 15:43:09,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 53 transitions, 312 flow [2024-06-21 15:43:09,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 53 transitions, 308 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-21 15:43:09,901 INFO L231 Difference]: Finished difference. Result has 44 places, 35 transitions, 187 flow [2024-06-21 15:43:09,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=187, PETRI_PLACES=44, PETRI_TRANSITIONS=35} [2024-06-21 15:43:09,902 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 14 predicate places. [2024-06-21 15:43:09,902 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 35 transitions, 187 flow [2024-06-21 15:43:09,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:09,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:09,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:09,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-21 15:43:09,903 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)] === [2024-06-21 15:43:09,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:09,904 INFO L85 PathProgramCache]: Analyzing trace with hash -157977323, now seen corresponding path program 1 times [2024-06-21 15:43:09,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:09,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422998916] [2024-06-21 15:43:09,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:09,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:09,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:10,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:10,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:10,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422998916] [2024-06-21 15:43:10,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422998916] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:10,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:10,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 15:43:10,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160453356] [2024-06-21 15:43:10,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:10,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 15:43:10,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:10,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 15:43:10,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-21 15:43:10,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:43:10,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 35 transitions, 187 flow. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 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) [2024-06-21 15:43:10,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:10,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:43:10,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:10,573 INFO L124 PetriNetUnfolderBase]: 214/385 cut-off events. [2024-06-21 15:43:10,573 INFO L125 PetriNetUnfolderBase]: For 686/686 co-relation queries the response was YES. [2024-06-21 15:43:10,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1264 conditions, 385 events. 214/385 cut-off events. For 686/686 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1369 event pairs, 77 based on Foata normal form. 1/385 useless extension candidates. Maximal degree in co-relation 1243. Up to 374 conditions per place. [2024-06-21 15:43:10,576 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 32 selfloop transitions, 6 changer transitions 0/40 dead transitions. [2024-06-21 15:43:10,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 40 transitions, 275 flow [2024-06-21 15:43:10,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 15:43:10,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 15:43:10,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 55 transitions. [2024-06-21 15:43:10,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-21 15:43:10,578 INFO L175 Difference]: Start difference. First operand has 44 places, 35 transitions, 187 flow. Second operand 5 states and 55 transitions. [2024-06-21 15:43:10,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 40 transitions, 275 flow [2024-06-21 15:43:10,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 40 transitions, 244 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-21 15:43:10,582 INFO L231 Difference]: Finished difference. Result has 45 places, 35 transitions, 173 flow [2024-06-21 15:43:10,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=173, PETRI_PLACES=45, PETRI_TRANSITIONS=35} [2024-06-21 15:43:10,582 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 15 predicate places. [2024-06-21 15:43:10,583 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 35 transitions, 173 flow [2024-06-21 15:43:10,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 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) [2024-06-21 15:43:10,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:10,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:10,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-21 15:43:10,584 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)] === [2024-06-21 15:43:10,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:10,584 INFO L85 PathProgramCache]: Analyzing trace with hash -613427755, now seen corresponding path program 1 times [2024-06-21 15:43:10,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:10,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785297654] [2024-06-21 15:43:10,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:10,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:10,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:11,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:11,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:11,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785297654] [2024-06-21 15:43:11,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785297654] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:11,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:11,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 15:43:11,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947233253] [2024-06-21 15:43:11,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:11,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 15:43:11,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:11,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 15:43:11,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-21 15:43:11,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:43:11,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 35 transitions, 173 flow. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:11,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:11,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:43:11,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:11,292 INFO L124 PetriNetUnfolderBase]: 212/382 cut-off events. [2024-06-21 15:43:11,293 INFO L125 PetriNetUnfolderBase]: For 810/810 co-relation queries the response was YES. [2024-06-21 15:43:11,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1242 conditions, 382 events. 212/382 cut-off events. For 810/810 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1363 event pairs, 76 based on Foata normal form. 1/382 useless extension candidates. Maximal degree in co-relation 1219. Up to 368 conditions per place. [2024-06-21 15:43:11,298 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 33 selfloop transitions, 8 changer transitions 0/43 dead transitions. [2024-06-21 15:43:11,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 43 transitions, 277 flow [2024-06-21 15:43:11,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 15:43:11,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 15:43:11,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 63 transitions. [2024-06-21 15:43:11,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-21 15:43:11,301 INFO L175 Difference]: Start difference. First operand has 45 places, 35 transitions, 173 flow. Second operand 6 states and 63 transitions. [2024-06-21 15:43:11,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 43 transitions, 277 flow [2024-06-21 15:43:11,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 43 transitions, 262 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-21 15:43:11,305 INFO L231 Difference]: Finished difference. Result has 47 places, 37 transitions, 191 flow [2024-06-21 15:43:11,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=191, PETRI_PLACES=47, PETRI_TRANSITIONS=37} [2024-06-21 15:43:11,307 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2024-06-21 15:43:11,308 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 37 transitions, 191 flow [2024-06-21 15:43:11,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:11,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:11,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:11,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-21 15:43:11,309 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)] === [2024-06-21 15:43:11,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:11,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1498775064, now seen corresponding path program 1 times [2024-06-21 15:43:11,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:11,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282935124] [2024-06-21 15:43:11,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:11,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:11,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:11,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:11,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:11,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282935124] [2024-06-21 15:43:11,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282935124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:11,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:11,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 15:43:11,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308066782] [2024-06-21 15:43:11,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:11,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 15:43:11,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:11,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 15:43:11,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-21 15:43:11,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:43:11,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 37 transitions, 191 flow. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:11,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:11,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:43:11,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:12,071 INFO L124 PetriNetUnfolderBase]: 211/381 cut-off events. [2024-06-21 15:43:12,072 INFO L125 PetriNetUnfolderBase]: For 1022/1022 co-relation queries the response was YES. [2024-06-21 15:43:12,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1310 conditions, 381 events. 211/381 cut-off events. For 1022/1022 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1340 event pairs, 53 based on Foata normal form. 3/383 useless extension candidates. Maximal degree in co-relation 1287. Up to 318 conditions per place. [2024-06-21 15:43:12,075 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 36 selfloop transitions, 13 changer transitions 0/51 dead transitions. [2024-06-21 15:43:12,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 51 transitions, 342 flow [2024-06-21 15:43:12,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 15:43:12,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 15:43:12,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 73 transitions. [2024-06-21 15:43:12,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3924731182795699 [2024-06-21 15:43:12,077 INFO L175 Difference]: Start difference. First operand has 47 places, 37 transitions, 191 flow. Second operand 6 states and 73 transitions. [2024-06-21 15:43:12,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 51 transitions, 342 flow [2024-06-21 15:43:12,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 51 transitions, 325 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-21 15:43:12,081 INFO L231 Difference]: Finished difference. Result has 49 places, 39 transitions, 222 flow [2024-06-21 15:43:12,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=222, PETRI_PLACES=49, PETRI_TRANSITIONS=39} [2024-06-21 15:43:12,082 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 19 predicate places. [2024-06-21 15:43:12,083 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 39 transitions, 222 flow [2024-06-21 15:43:12,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:12,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:12,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:12,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-21 15:43:12,084 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)] === [2024-06-21 15:43:12,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:12,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1268182826, now seen corresponding path program 2 times [2024-06-21 15:43:12,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:12,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137577870] [2024-06-21 15:43:12,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:12,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:12,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:12,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:12,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:12,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137577870] [2024-06-21 15:43:12,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137577870] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:12,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:12,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 15:43:12,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082459554] [2024-06-21 15:43:12,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:12,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 15:43:12,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:12,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 15:43:12,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-21 15:43:12,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:43:12,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 39 transitions, 222 flow. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:12,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:12,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:43:12,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:12,888 INFO L124 PetriNetUnfolderBase]: 206/373 cut-off events. [2024-06-21 15:43:12,888 INFO L125 PetriNetUnfolderBase]: For 1294/1294 co-relation queries the response was YES. [2024-06-21 15:43:12,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1343 conditions, 373 events. 206/373 cut-off events. For 1294/1294 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1308 event pairs, 66 based on Foata normal form. 1/370 useless extension candidates. Maximal degree in co-relation 1319. Up to 311 conditions per place. [2024-06-21 15:43:12,891 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 31 selfloop transitions, 14 changer transitions 0/47 dead transitions. [2024-06-21 15:43:12,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 47 transitions, 330 flow [2024-06-21 15:43:12,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 15:43:12,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 15:43:12,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 70 transitions. [2024-06-21 15:43:12,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-21 15:43:12,896 INFO L175 Difference]: Start difference. First operand has 49 places, 39 transitions, 222 flow. Second operand 6 states and 70 transitions. [2024-06-21 15:43:12,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 47 transitions, 330 flow [2024-06-21 15:43:12,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 47 transitions, 315 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-21 15:43:12,901 INFO L231 Difference]: Finished difference. Result has 52 places, 39 transitions, 240 flow [2024-06-21 15:43:12,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=240, PETRI_PLACES=52, PETRI_TRANSITIONS=39} [2024-06-21 15:43:12,903 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 22 predicate places. [2024-06-21 15:43:12,903 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 39 transitions, 240 flow [2024-06-21 15:43:12,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:12,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:12,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:12,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-21 15:43:12,904 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)] === [2024-06-21 15:43:12,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:12,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1503922118, now seen corresponding path program 1 times [2024-06-21 15:43:12,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:12,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459026530] [2024-06-21 15:43:12,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:12,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:12,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:13,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:13,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:13,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459026530] [2024-06-21 15:43:13,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459026530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:13,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:13,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 15:43:13,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12727132] [2024-06-21 15:43:13,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:13,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 15:43:13,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:13,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 15:43:13,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 15:43:13,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:43:13,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 240 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:13,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:13,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:43:13,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:13,819 INFO L124 PetriNetUnfolderBase]: 204/368 cut-off events. [2024-06-21 15:43:13,820 INFO L125 PetriNetUnfolderBase]: For 1526/1526 co-relation queries the response was YES. [2024-06-21 15:43:13,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1378 conditions, 368 events. 204/368 cut-off events. For 1526/1526 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1297 event pairs, 71 based on Foata normal form. 1/368 useless extension candidates. Maximal degree in co-relation 1353. Up to 351 conditions per place. [2024-06-21 15:43:13,823 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 36 selfloop transitions, 10 changer transitions 0/48 dead transitions. [2024-06-21 15:43:13,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 48 transitions, 358 flow [2024-06-21 15:43:13,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 15:43:13,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 15:43:13,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 71 transitions. [2024-06-21 15:43:13,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3271889400921659 [2024-06-21 15:43:13,824 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 240 flow. Second operand 7 states and 71 transitions. [2024-06-21 15:43:13,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 48 transitions, 358 flow [2024-06-21 15:43:13,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 48 transitions, 312 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-21 15:43:13,828 INFO L231 Difference]: Finished difference. Result has 53 places, 41 transitions, 233 flow [2024-06-21 15:43:13,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=233, PETRI_PLACES=53, PETRI_TRANSITIONS=41} [2024-06-21 15:43:13,829 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 23 predicate places. [2024-06-21 15:43:13,829 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 41 transitions, 233 flow [2024-06-21 15:43:13,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:13,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:13,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:13,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-21 15:43:13,830 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)] === [2024-06-21 15:43:13,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:13,830 INFO L85 PathProgramCache]: Analyzing trace with hash 782614784, now seen corresponding path program 1 times [2024-06-21 15:43:13,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:13,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687554434] [2024-06-21 15:43:13,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:13,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:13,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:14,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:14,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:14,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687554434] [2024-06-21 15:43:14,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687554434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:14,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:14,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 15:43:14,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790823810] [2024-06-21 15:43:14,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:14,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 15:43:14,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:14,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 15:43:14,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-21 15:43:14,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:43:14,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 233 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:14,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:14,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:43:14,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:14,677 INFO L124 PetriNetUnfolderBase]: 213/384 cut-off events. [2024-06-21 15:43:14,677 INFO L125 PetriNetUnfolderBase]: For 1865/1865 co-relation queries the response was YES. [2024-06-21 15:43:14,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1449 conditions, 384 events. 213/384 cut-off events. For 1865/1865 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1378 event pairs, 56 based on Foata normal form. 3/385 useless extension candidates. Maximal degree in co-relation 1423. Up to 314 conditions per place. [2024-06-21 15:43:14,680 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 38 selfloop transitions, 20 changer transitions 0/60 dead transitions. [2024-06-21 15:43:14,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 60 transitions, 411 flow [2024-06-21 15:43:14,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 15:43:14,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 15:43:14,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-21 15:43:14,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37327188940092165 [2024-06-21 15:43:14,683 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 233 flow. Second operand 7 states and 81 transitions. [2024-06-21 15:43:14,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 60 transitions, 411 flow [2024-06-21 15:43:14,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 60 transitions, 388 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-21 15:43:14,686 INFO L231 Difference]: Finished difference. Result has 57 places, 49 transitions, 317 flow [2024-06-21 15:43:14,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=317, PETRI_PLACES=57, PETRI_TRANSITIONS=49} [2024-06-21 15:43:14,688 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 27 predicate places. [2024-06-21 15:43:14,689 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 49 transitions, 317 flow [2024-06-21 15:43:14,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:14,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:14,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:14,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-21 15:43:14,690 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)] === [2024-06-21 15:43:14,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:14,691 INFO L85 PathProgramCache]: Analyzing trace with hash 982983284, now seen corresponding path program 2 times [2024-06-21 15:43:14,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:14,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45239411] [2024-06-21 15:43:14,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:14,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:14,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:15,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:15,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:15,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45239411] [2024-06-21 15:43:15,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45239411] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:15,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:15,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 15:43:15,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074508685] [2024-06-21 15:43:15,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:15,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 15:43:15,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:15,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 15:43:15,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-21 15:43:15,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:43:15,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 49 transitions, 317 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:15,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:15,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:43:15,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:15,465 INFO L124 PetriNetUnfolderBase]: 216/390 cut-off events. [2024-06-21 15:43:15,465 INFO L125 PetriNetUnfolderBase]: For 2321/2324 co-relation queries the response was YES. [2024-06-21 15:43:15,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1667 conditions, 390 events. 216/390 cut-off events. For 2321/2324 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1373 event pairs, 63 based on Foata normal form. 1/388 useless extension candidates. Maximal degree in co-relation 1638. Up to 325 conditions per place. [2024-06-21 15:43:15,469 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 37 selfloop transitions, 19 changer transitions 0/58 dead transitions. [2024-06-21 15:43:15,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 58 transitions, 459 flow [2024-06-21 15:43:15,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 15:43:15,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 15:43:15,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-21 15:43:15,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35944700460829493 [2024-06-21 15:43:15,470 INFO L175 Difference]: Start difference. First operand has 57 places, 49 transitions, 317 flow. Second operand 7 states and 78 transitions. [2024-06-21 15:43:15,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 58 transitions, 459 flow [2024-06-21 15:43:15,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 58 transitions, 438 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-21 15:43:15,475 INFO L231 Difference]: Finished difference. Result has 62 places, 51 transitions, 357 flow [2024-06-21 15:43:15,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=357, PETRI_PLACES=62, PETRI_TRANSITIONS=51} [2024-06-21 15:43:15,475 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 32 predicate places. [2024-06-21 15:43:15,475 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 51 transitions, 357 flow [2024-06-21 15:43:15,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:15,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:15,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:15,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-21 15:43:15,476 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)] === [2024-06-21 15:43:15,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:15,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1093512524, now seen corresponding path program 3 times [2024-06-21 15:43:15,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:15,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092801390] [2024-06-21 15:43:15,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:15,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:15,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:15,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:15,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:15,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092801390] [2024-06-21 15:43:15,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092801390] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:15,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:15,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 15:43:15,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609471513] [2024-06-21 15:43:15,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:15,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 15:43:15,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:15,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 15:43:15,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-21 15:43:16,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:43:16,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 51 transitions, 357 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:16,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:16,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:43:16,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:16,284 INFO L124 PetriNetUnfolderBase]: 219/395 cut-off events. [2024-06-21 15:43:16,284 INFO L125 PetriNetUnfolderBase]: For 2856/2859 co-relation queries the response was YES. [2024-06-21 15:43:16,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1760 conditions, 395 events. 219/395 cut-off events. For 2856/2859 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1401 event pairs, 62 based on Foata normal form. 1/393 useless extension candidates. Maximal degree in co-relation 1729. Up to 311 conditions per place. [2024-06-21 15:43:16,288 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 35 selfloop transitions, 27 changer transitions 0/64 dead transitions. [2024-06-21 15:43:16,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 64 transitions, 559 flow [2024-06-21 15:43:16,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 15:43:16,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 15:43:16,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2024-06-21 15:43:16,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778801843317972 [2024-06-21 15:43:16,290 INFO L175 Difference]: Start difference. First operand has 62 places, 51 transitions, 357 flow. Second operand 7 states and 82 transitions. [2024-06-21 15:43:16,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 64 transitions, 559 flow [2024-06-21 15:43:16,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 64 transitions, 514 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-21 15:43:16,296 INFO L231 Difference]: Finished difference. Result has 65 places, 55 transitions, 422 flow [2024-06-21 15:43:16,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=422, PETRI_PLACES=65, PETRI_TRANSITIONS=55} [2024-06-21 15:43:16,298 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 35 predicate places. [2024-06-21 15:43:16,298 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 55 transitions, 422 flow [2024-06-21 15:43:16,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:16,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:16,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:16,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-21 15:43:16,299 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)] === [2024-06-21 15:43:16,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:16,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1093503596, now seen corresponding path program 1 times [2024-06-21 15:43:16,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:16,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272452783] [2024-06-21 15:43:16,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:16,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:16,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:17,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:17,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:17,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272452783] [2024-06-21 15:43:17,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272452783] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:17,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:17,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 15:43:17,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651977198] [2024-06-21 15:43:17,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:17,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 15:43:17,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:17,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 15:43:17,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 15:43:17,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:43:17,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 55 transitions, 422 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:17,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:17,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:43:17,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:17,960 INFO L124 PetriNetUnfolderBase]: 217/390 cut-off events. [2024-06-21 15:43:17,960 INFO L125 PetriNetUnfolderBase]: For 3237/3237 co-relation queries the response was YES. [2024-06-21 15:43:17,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1861 conditions, 390 events. 217/390 cut-off events. For 3237/3237 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1365 event pairs, 47 based on Foata normal form. 1/390 useless extension candidates. Maximal degree in co-relation 1828. Up to 366 conditions per place. [2024-06-21 15:43:17,964 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 52 selfloop transitions, 14 changer transitions 0/68 dead transitions. [2024-06-21 15:43:17,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 68 transitions, 622 flow [2024-06-21 15:43:17,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 15:43:17,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 15:43:17,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 81 transitions. [2024-06-21 15:43:17,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32661290322580644 [2024-06-21 15:43:17,966 INFO L175 Difference]: Start difference. First operand has 65 places, 55 transitions, 422 flow. Second operand 8 states and 81 transitions. [2024-06-21 15:43:17,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 68 transitions, 622 flow [2024-06-21 15:43:17,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 68 transitions, 583 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-21 15:43:17,975 INFO L231 Difference]: Finished difference. Result has 71 places, 59 transitions, 452 flow [2024-06-21 15:43:17,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=452, PETRI_PLACES=71, PETRI_TRANSITIONS=59} [2024-06-21 15:43:17,977 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 41 predicate places. [2024-06-21 15:43:17,977 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 59 transitions, 452 flow [2024-06-21 15:43:17,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:17,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:17,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:17,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-21 15:43:17,978 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)] === [2024-06-21 15:43:17,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:17,978 INFO L85 PathProgramCache]: Analyzing trace with hash -742615604, now seen corresponding path program 1 times [2024-06-21 15:43:17,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:17,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835913068] [2024-06-21 15:43:17,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:17,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:17,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:18,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:18,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:18,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835913068] [2024-06-21 15:43:18,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835913068] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:18,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:18,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 15:43:18,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396210553] [2024-06-21 15:43:18,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:18,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 15:43:18,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:18,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 15:43:18,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-21 15:43:18,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:43:18,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 59 transitions, 452 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:18,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:18,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:43:18,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:18,771 INFO L124 PetriNetUnfolderBase]: 223/401 cut-off events. [2024-06-21 15:43:18,771 INFO L125 PetriNetUnfolderBase]: For 3777/3777 co-relation queries the response was YES. [2024-06-21 15:43:18,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1996 conditions, 401 events. 223/401 cut-off events. For 3777/3777 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1429 event pairs, 55 based on Foata normal form. 2/401 useless extension candidates. Maximal degree in co-relation 1960. Up to 334 conditions per place. [2024-06-21 15:43:18,775 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 53 selfloop transitions, 20 changer transitions 0/75 dead transitions. [2024-06-21 15:43:18,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 75 transitions, 654 flow [2024-06-21 15:43:18,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 15:43:18,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 15:43:18,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-06-21 15:43:18,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3824884792626728 [2024-06-21 15:43:18,777 INFO L175 Difference]: Start difference. First operand has 71 places, 59 transitions, 452 flow. Second operand 7 states and 83 transitions. [2024-06-21 15:43:18,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 75 transitions, 654 flow [2024-06-21 15:43:18,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 75 transitions, 627 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-21 15:43:18,787 INFO L231 Difference]: Finished difference. Result has 73 places, 61 transitions, 492 flow [2024-06-21 15:43:18,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=492, PETRI_PLACES=73, PETRI_TRANSITIONS=61} [2024-06-21 15:43:18,788 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 43 predicate places. [2024-06-21 15:43:18,788 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 61 transitions, 492 flow [2024-06-21 15:43:18,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:18,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:18,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:18,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-21 15:43:18,789 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)] === [2024-06-21 15:43:18,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:18,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1173559012, now seen corresponding path program 2 times [2024-06-21 15:43:18,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:18,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768344959] [2024-06-21 15:43:18,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:18,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:18,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:19,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:19,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:19,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768344959] [2024-06-21 15:43:19,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768344959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:19,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:19,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 15:43:19,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699963822] [2024-06-21 15:43:19,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:19,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 15:43:19,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:19,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 15:43:19,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-21 15:43:19,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:43:19,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 61 transitions, 492 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:19,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:19,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:43:19,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:19,573 INFO L124 PetriNetUnfolderBase]: 229/411 cut-off events. [2024-06-21 15:43:19,573 INFO L125 PetriNetUnfolderBase]: For 4404/4404 co-relation queries the response was YES. [2024-06-21 15:43:19,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2146 conditions, 411 events. 229/411 cut-off events. For 4404/4404 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1482 event pairs, 55 based on Foata normal form. 2/411 useless extension candidates. Maximal degree in co-relation 2109. Up to 324 conditions per place. [2024-06-21 15:43:19,578 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 50 selfloop transitions, 23 changer transitions 0/75 dead transitions. [2024-06-21 15:43:19,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 75 transitions, 696 flow [2024-06-21 15:43:19,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 15:43:19,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 15:43:19,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-21 15:43:19,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37327188940092165 [2024-06-21 15:43:19,579 INFO L175 Difference]: Start difference. First operand has 73 places, 61 transitions, 492 flow. Second operand 7 states and 81 transitions. [2024-06-21 15:43:19,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 75 transitions, 696 flow [2024-06-21 15:43:19,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 75 transitions, 643 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-21 15:43:19,588 INFO L231 Difference]: Finished difference. Result has 75 places, 63 transitions, 517 flow [2024-06-21 15:43:19,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=439, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=517, PETRI_PLACES=75, PETRI_TRANSITIONS=63} [2024-06-21 15:43:19,589 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 45 predicate places. [2024-06-21 15:43:19,589 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 63 transitions, 517 flow [2024-06-21 15:43:19,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:19,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:19,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:19,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-21 15:43:19,590 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)] === [2024-06-21 15:43:19,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:19,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1173558795, now seen corresponding path program 1 times [2024-06-21 15:43:19,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:19,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860618295] [2024-06-21 15:43:19,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:19,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:19,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:20,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:20,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:20,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860618295] [2024-06-21 15:43:20,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860618295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:20,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:20,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 15:43:20,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546469879] [2024-06-21 15:43:20,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:20,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 15:43:20,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:20,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 15:43:20,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 15:43:20,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:43:20,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 63 transitions, 517 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:20,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:20,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:43:20,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:20,576 INFO L124 PetriNetUnfolderBase]: 238/426 cut-off events. [2024-06-21 15:43:20,576 INFO L125 PetriNetUnfolderBase]: For 5113/5113 co-relation queries the response was YES. [2024-06-21 15:43:20,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2267 conditions, 426 events. 238/426 cut-off events. For 5113/5113 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1564 event pairs, 53 based on Foata normal form. 3/427 useless extension candidates. Maximal degree in co-relation 2229. Up to 345 conditions per place. [2024-06-21 15:43:20,581 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 54 selfloop transitions, 23 changer transitions 0/79 dead transitions. [2024-06-21 15:43:20,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 79 transitions, 737 flow [2024-06-21 15:43:20,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 15:43:20,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 15:43:20,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-21 15:43:20,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36693548387096775 [2024-06-21 15:43:20,583 INFO L175 Difference]: Start difference. First operand has 75 places, 63 transitions, 517 flow. Second operand 8 states and 91 transitions. [2024-06-21 15:43:20,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 79 transitions, 737 flow [2024-06-21 15:43:20,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 79 transitions, 677 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-21 15:43:20,590 INFO L231 Difference]: Finished difference. Result has 78 places, 66 transitions, 543 flow [2024-06-21 15:43:20,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=543, PETRI_PLACES=78, PETRI_TRANSITIONS=66} [2024-06-21 15:43:20,591 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 48 predicate places. [2024-06-21 15:43:20,591 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 66 transitions, 543 flow [2024-06-21 15:43:20,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:20,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:20,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:20,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-21 15:43:20,592 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)] === [2024-06-21 15:43:20,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:20,593 INFO L85 PathProgramCache]: Analyzing trace with hash 573946055, now seen corresponding path program 2 times [2024-06-21 15:43:20,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:20,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648083127] [2024-06-21 15:43:20,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:20,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:20,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:21,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:21,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:21,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648083127] [2024-06-21 15:43:21,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648083127] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:21,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:21,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 15:43:21,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241712587] [2024-06-21 15:43:21,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:21,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 15:43:21,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:21,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 15:43:21,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 15:43:21,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:43:21,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 66 transitions, 543 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:21,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:21,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:43:21,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:21,646 INFO L124 PetriNetUnfolderBase]: 241/433 cut-off events. [2024-06-21 15:43:21,646 INFO L125 PetriNetUnfolderBase]: For 5511/5511 co-relation queries the response was YES. [2024-06-21 15:43:21,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2365 conditions, 433 events. 241/433 cut-off events. For 5511/5511 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1591 event pairs, 53 based on Foata normal form. 1/430 useless extension candidates. Maximal degree in co-relation 2326. Up to 364 conditions per place. [2024-06-21 15:43:21,650 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 55 selfloop transitions, 23 changer transitions 0/80 dead transitions. [2024-06-21 15:43:21,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 80 transitions, 775 flow [2024-06-21 15:43:21,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:43:21,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:43:21,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-21 15:43:21,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34050179211469533 [2024-06-21 15:43:21,653 INFO L175 Difference]: Start difference. First operand has 78 places, 66 transitions, 543 flow. Second operand 9 states and 95 transitions. [2024-06-21 15:43:21,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 80 transitions, 775 flow [2024-06-21 15:43:21,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 80 transitions, 705 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-21 15:43:21,664 INFO L231 Difference]: Finished difference. Result has 82 places, 70 transitions, 570 flow [2024-06-21 15:43:21,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=570, PETRI_PLACES=82, PETRI_TRANSITIONS=70} [2024-06-21 15:43:21,665 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 52 predicate places. [2024-06-21 15:43:21,665 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 70 transitions, 570 flow [2024-06-21 15:43:21,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:21,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:21,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:21,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-21 15:43:21,666 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)] === [2024-06-21 15:43:21,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:21,666 INFO L85 PathProgramCache]: Analyzing trace with hash 2134863833, now seen corresponding path program 3 times [2024-06-21 15:43:21,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:21,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922931672] [2024-06-21 15:43:21,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:21,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:21,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:22,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:22,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:22,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922931672] [2024-06-21 15:43:22,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922931672] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:22,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:22,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 15:43:22,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7593650] [2024-06-21 15:43:22,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:22,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 15:43:22,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:22,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 15:43:22,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 15:43:22,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:43:22,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 70 transitions, 570 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:22,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:22,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:43:22,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:22,602 INFO L124 PetriNetUnfolderBase]: 244/435 cut-off events. [2024-06-21 15:43:22,603 INFO L125 PetriNetUnfolderBase]: For 6025/6025 co-relation queries the response was YES. [2024-06-21 15:43:22,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2435 conditions, 435 events. 244/435 cut-off events. For 6025/6025 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1583 event pairs, 48 based on Foata normal form. 1/435 useless extension candidates. Maximal degree in co-relation 2394. Up to 415 conditions per place. [2024-06-21 15:43:22,607 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 66 selfloop transitions, 12 changer transitions 0/80 dead transitions. [2024-06-21 15:43:22,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 80 transitions, 771 flow [2024-06-21 15:43:22,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 15:43:22,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 15:43:22,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 79 transitions. [2024-06-21 15:43:22,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3185483870967742 [2024-06-21 15:43:22,609 INFO L175 Difference]: Start difference. First operand has 82 places, 70 transitions, 570 flow. Second operand 8 states and 79 transitions. [2024-06-21 15:43:22,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 80 transitions, 771 flow [2024-06-21 15:43:22,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 80 transitions, 725 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-21 15:43:22,619 INFO L231 Difference]: Finished difference. Result has 85 places, 72 transitions, 581 flow [2024-06-21 15:43:22,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=581, PETRI_PLACES=85, PETRI_TRANSITIONS=72} [2024-06-21 15:43:22,619 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 55 predicate places. [2024-06-21 15:43:22,619 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 72 transitions, 581 flow [2024-06-21 15:43:22,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:22,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:22,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:22,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-21 15:43:22,620 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)] === [2024-06-21 15:43:22,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:22,621 INFO L85 PathProgramCache]: Analyzing trace with hash 460851450, now seen corresponding path program 3 times [2024-06-21 15:43:22,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:22,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079208528] [2024-06-21 15:43:22,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:22,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:22,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:23,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:23,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:23,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079208528] [2024-06-21 15:43:23,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079208528] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:23,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:23,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 15:43:23,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227580395] [2024-06-21 15:43:23,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:23,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 15:43:23,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:23,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 15:43:23,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-21 15:43:23,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:43:23,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 72 transitions, 581 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:23,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:23,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:43:23,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:23,348 INFO L124 PetriNetUnfolderBase]: 245/439 cut-off events. [2024-06-21 15:43:23,348 INFO L125 PetriNetUnfolderBase]: For 6956/6959 co-relation queries the response was YES. [2024-06-21 15:43:23,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2478 conditions, 439 events. 245/439 cut-off events. For 6956/6959 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1626 event pairs, 64 based on Foata normal form. 2/438 useless extension candidates. Maximal degree in co-relation 2435. Up to 331 conditions per place. [2024-06-21 15:43:23,352 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 55 selfloop transitions, 28 changer transitions 0/85 dead transitions. [2024-06-21 15:43:23,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 85 transitions, 867 flow [2024-06-21 15:43:23,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 15:43:23,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 15:43:23,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-06-21 15:43:23,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3686635944700461 [2024-06-21 15:43:23,355 INFO L175 Difference]: Start difference. First operand has 85 places, 72 transitions, 581 flow. Second operand 7 states and 80 transitions. [2024-06-21 15:43:23,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 85 transitions, 867 flow [2024-06-21 15:43:23,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 85 transitions, 826 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-21 15:43:23,365 INFO L231 Difference]: Finished difference. Result has 86 places, 76 transitions, 661 flow [2024-06-21 15:43:23,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=661, PETRI_PLACES=86, PETRI_TRANSITIONS=76} [2024-06-21 15:43:23,366 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 56 predicate places. [2024-06-21 15:43:23,366 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 76 transitions, 661 flow [2024-06-21 15:43:23,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:23,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:23,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:23,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-21 15:43:23,367 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)] === [2024-06-21 15:43:23,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:23,368 INFO L85 PathProgramCache]: Analyzing trace with hash 415063925, now seen corresponding path program 4 times [2024-06-21 15:43:23,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:23,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741189769] [2024-06-21 15:43:23,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:23,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:23,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:24,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:24,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:24,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741189769] [2024-06-21 15:43:24,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741189769] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:24,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:24,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 15:43:24,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301711761] [2024-06-21 15:43:24,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:24,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 15:43:24,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:24,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 15:43:24,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-21 15:43:24,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:43:24,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 76 transitions, 661 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:24,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:24,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:43:24,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:24,293 INFO L124 PetriNetUnfolderBase]: 248/444 cut-off events. [2024-06-21 15:43:24,293 INFO L125 PetriNetUnfolderBase]: For 7485/7488 co-relation queries the response was YES. [2024-06-21 15:43:24,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2601 conditions, 444 events. 248/444 cut-off events. For 7485/7488 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1640 event pairs, 62 based on Foata normal form. 1/442 useless extension candidates. Maximal degree in co-relation 2557. Up to 332 conditions per place. [2024-06-21 15:43:24,298 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 50 selfloop transitions, 37 changer transitions 0/89 dead transitions. [2024-06-21 15:43:24,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 89 transitions, 951 flow [2024-06-21 15:43:24,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 15:43:24,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 15:43:24,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-21 15:43:24,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-21 15:43:24,300 INFO L175 Difference]: Start difference. First operand has 86 places, 76 transitions, 661 flow. Second operand 8 states and 92 transitions. [2024-06-21 15:43:24,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 89 transitions, 951 flow [2024-06-21 15:43:24,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 89 transitions, 904 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-06-21 15:43:24,314 INFO L231 Difference]: Finished difference. Result has 92 places, 80 transitions, 771 flow [2024-06-21 15:43:24,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=771, PETRI_PLACES=92, PETRI_TRANSITIONS=80} [2024-06-21 15:43:24,314 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 62 predicate places. [2024-06-21 15:43:24,314 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 80 transitions, 771 flow [2024-06-21 15:43:24,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:24,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:24,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:24,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-21 15:43:24,315 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)] === [2024-06-21 15:43:24,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:24,316 INFO L85 PathProgramCache]: Analyzing trace with hash 461128497, now seen corresponding path program 1 times [2024-06-21 15:43:24,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:24,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623099330] [2024-06-21 15:43:24,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:24,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:24,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:26,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:26,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:26,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623099330] [2024-06-21 15:43:26,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623099330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:26,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:26,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 15:43:26,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004316437] [2024-06-21 15:43:26,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:26,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 15:43:26,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:26,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 15:43:26,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 15:43:26,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:43:26,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 80 transitions, 771 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:26,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:26,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:43:26,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:26,442 INFO L124 PetriNetUnfolderBase]: 246/439 cut-off events. [2024-06-21 15:43:26,442 INFO L125 PetriNetUnfolderBase]: For 7898/7898 co-relation queries the response was YES. [2024-06-21 15:43:26,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2698 conditions, 439 events. 246/439 cut-off events. For 7898/7898 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1611 event pairs, 48 based on Foata normal form. 1/439 useless extension candidates. Maximal degree in co-relation 2651. Up to 416 conditions per place. [2024-06-21 15:43:26,447 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 73 selfloop transitions, 14 changer transitions 0/89 dead transitions. [2024-06-21 15:43:26,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 89 transitions, 968 flow [2024-06-21 15:43:26,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:43:26,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:43:26,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 87 transitions. [2024-06-21 15:43:26,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3118279569892473 [2024-06-21 15:43:26,449 INFO L175 Difference]: Start difference. First operand has 92 places, 80 transitions, 771 flow. Second operand 9 states and 87 transitions. [2024-06-21 15:43:26,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 89 transitions, 968 flow [2024-06-21 15:43:26,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 89 transitions, 908 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-21 15:43:26,461 INFO L231 Difference]: Finished difference. Result has 97 places, 80 transitions, 744 flow [2024-06-21 15:43:26,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=711, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=744, PETRI_PLACES=97, PETRI_TRANSITIONS=80} [2024-06-21 15:43:26,462 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 67 predicate places. [2024-06-21 15:43:26,462 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 80 transitions, 744 flow [2024-06-21 15:43:26,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:26,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:26,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:26,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-21 15:43:26,463 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)] === [2024-06-21 15:43:26,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:26,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1664398791, now seen corresponding path program 1 times [2024-06-21 15:43:26,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:26,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224995162] [2024-06-21 15:43:26,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:26,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:26,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:27,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:27,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:27,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224995162] [2024-06-21 15:43:27,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224995162] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:27,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:27,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 15:43:27,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649932689] [2024-06-21 15:43:27,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:27,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 15:43:27,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:27,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 15:43:27,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-21 15:43:27,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:43:27,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 80 transitions, 744 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:27,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:27,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:43:27,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:27,622 INFO L124 PetriNetUnfolderBase]: 250/447 cut-off events. [2024-06-21 15:43:27,623 INFO L125 PetriNetUnfolderBase]: For 8675/8675 co-relation queries the response was YES. [2024-06-21 15:43:27,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2741 conditions, 447 events. 250/447 cut-off events. For 8675/8675 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1675 event pairs, 27 based on Foata normal form. 2/448 useless extension candidates. Maximal degree in co-relation 2692. Up to 346 conditions per place. [2024-06-21 15:43:27,628 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 74 selfloop transitions, 17 changer transitions 0/93 dead transitions. [2024-06-21 15:43:27,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 93 transitions, 1005 flow [2024-06-21 15:43:27,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 15:43:27,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 15:43:27,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-21 15:43:27,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35944700460829493 [2024-06-21 15:43:27,629 INFO L175 Difference]: Start difference. First operand has 97 places, 80 transitions, 744 flow. Second operand 7 states and 78 transitions. [2024-06-21 15:43:27,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 93 transitions, 1005 flow [2024-06-21 15:43:27,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 93 transitions, 972 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-21 15:43:27,643 INFO L231 Difference]: Finished difference. Result has 96 places, 81 transitions, 755 flow [2024-06-21 15:43:27,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=711, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=755, PETRI_PLACES=96, PETRI_TRANSITIONS=81} [2024-06-21 15:43:27,644 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 66 predicate places. [2024-06-21 15:43:27,644 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 81 transitions, 755 flow [2024-06-21 15:43:27,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:27,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:27,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:27,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-21 15:43:27,645 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)] === [2024-06-21 15:43:27,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:27,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1664338341, now seen corresponding path program 2 times [2024-06-21 15:43:27,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:27,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867237396] [2024-06-21 15:43:27,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:27,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:27,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:28,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:28,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:28,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867237396] [2024-06-21 15:43:28,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867237396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:28,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:28,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 15:43:28,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746450106] [2024-06-21 15:43:28,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:28,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 15:43:28,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:28,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 15:43:28,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-21 15:43:28,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:43:28,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 81 transitions, 755 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:28,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:28,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:43:28,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:28,796 INFO L124 PetriNetUnfolderBase]: 247/442 cut-off events. [2024-06-21 15:43:28,796 INFO L125 PetriNetUnfolderBase]: For 8967/8967 co-relation queries the response was YES. [2024-06-21 15:43:28,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2736 conditions, 442 events. 247/442 cut-off events. For 8967/8967 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1645 event pairs, 46 based on Foata normal form. 2/443 useless extension candidates. Maximal degree in co-relation 2686. Up to 376 conditions per place. [2024-06-21 15:43:28,801 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 71 selfloop transitions, 18 changer transitions 0/91 dead transitions. [2024-06-21 15:43:28,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 91 transitions, 960 flow [2024-06-21 15:43:28,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 15:43:28,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 15:43:28,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-06-21 15:43:28,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3686635944700461 [2024-06-21 15:43:28,803 INFO L175 Difference]: Start difference. First operand has 96 places, 81 transitions, 755 flow. Second operand 7 states and 80 transitions. [2024-06-21 15:43:28,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 91 transitions, 960 flow [2024-06-21 15:43:28,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 91 transitions, 928 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-21 15:43:28,819 INFO L231 Difference]: Finished difference. Result has 99 places, 81 transitions, 763 flow [2024-06-21 15:43:28,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=723, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=763, PETRI_PLACES=99, PETRI_TRANSITIONS=81} [2024-06-21 15:43:28,819 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 69 predicate places. [2024-06-21 15:43:28,820 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 81 transitions, 763 flow [2024-06-21 15:43:28,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:28,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:28,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:28,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-21 15:43:28,820 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)] === [2024-06-21 15:43:28,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:28,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1187684261, now seen corresponding path program 1 times [2024-06-21 15:43:28,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:28,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336136361] [2024-06-21 15:43:28,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:28,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:28,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:29,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:29,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:29,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336136361] [2024-06-21 15:43:29,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336136361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:29,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:29,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 15:43:29,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441685870] [2024-06-21 15:43:29,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:29,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 15:43:29,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:29,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 15:43:29,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-21 15:43:29,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:43:29,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 81 transitions, 763 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:29,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:29,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:43:29,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:29,953 INFO L124 PetriNetUnfolderBase]: 245/439 cut-off events. [2024-06-21 15:43:29,953 INFO L125 PetriNetUnfolderBase]: For 9130/9130 co-relation queries the response was YES. [2024-06-21 15:43:29,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2728 conditions, 439 events. 245/439 cut-off events. For 9130/9130 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1640 event pairs, 43 based on Foata normal form. 1/439 useless extension candidates. Maximal degree in co-relation 2677. Up to 367 conditions per place. [2024-06-21 15:43:29,959 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 67 selfloop transitions, 22 changer transitions 0/91 dead transitions. [2024-06-21 15:43:29,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 91 transitions, 972 flow [2024-06-21 15:43:29,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 15:43:29,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 15:43:29,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2024-06-21 15:43:29,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778801843317972 [2024-06-21 15:43:29,960 INFO L175 Difference]: Start difference. First operand has 99 places, 81 transitions, 763 flow. Second operand 7 states and 82 transitions. [2024-06-21 15:43:29,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 91 transitions, 972 flow [2024-06-21 15:43:29,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 91 transitions, 918 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-21 15:43:29,980 INFO L231 Difference]: Finished difference. Result has 99 places, 81 transitions, 762 flow [2024-06-21 15:43:29,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=709, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=762, PETRI_PLACES=99, PETRI_TRANSITIONS=81} [2024-06-21 15:43:29,981 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 69 predicate places. [2024-06-21 15:43:29,981 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 81 transitions, 762 flow [2024-06-21 15:43:29,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:29,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:29,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:29,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-21 15:43:29,982 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)] === [2024-06-21 15:43:29,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:29,982 INFO L85 PathProgramCache]: Analyzing trace with hash -2020767277, now seen corresponding path program 2 times [2024-06-21 15:43:29,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:29,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236268743] [2024-06-21 15:43:29,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:29,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:30,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:30,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:30,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:30,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236268743] [2024-06-21 15:43:30,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236268743] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:30,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:30,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 15:43:30,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729692850] [2024-06-21 15:43:30,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:30,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 15:43:30,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:30,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 15:43:30,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-21 15:43:30,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:43:30,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 81 transitions, 762 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:30,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:30,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:43:30,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:31,304 INFO L124 PetriNetUnfolderBase]: 243/436 cut-off events. [2024-06-21 15:43:31,304 INFO L125 PetriNetUnfolderBase]: For 9479/9479 co-relation queries the response was YES. [2024-06-21 15:43:31,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2690 conditions, 436 events. 243/436 cut-off events. For 9479/9479 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1612 event pairs, 44 based on Foata normal form. 1/436 useless extension candidates. Maximal degree in co-relation 2639. Up to 367 conditions per place. [2024-06-21 15:43:31,309 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 70 selfloop transitions, 22 changer transitions 0/94 dead transitions. [2024-06-21 15:43:31,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 94 transitions, 988 flow [2024-06-21 15:43:31,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 15:43:31,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 15:43:31,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 84 transitions. [2024-06-21 15:43:31,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-21 15:43:31,312 INFO L175 Difference]: Start difference. First operand has 99 places, 81 transitions, 762 flow. Second operand 7 states and 84 transitions. [2024-06-21 15:43:31,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 94 transitions, 988 flow [2024-06-21 15:43:31,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 94 transitions, 932 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-21 15:43:31,330 INFO L231 Difference]: Finished difference. Result has 100 places, 81 transitions, 758 flow [2024-06-21 15:43:31,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=706, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=758, PETRI_PLACES=100, PETRI_TRANSITIONS=81} [2024-06-21 15:43:31,330 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 70 predicate places. [2024-06-21 15:43:31,330 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 81 transitions, 758 flow [2024-06-21 15:43:31,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:31,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:31,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:31,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-21 15:43:31,332 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)] === [2024-06-21 15:43:31,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:31,332 INFO L85 PathProgramCache]: Analyzing trace with hash -2020589461, now seen corresponding path program 1 times [2024-06-21 15:43:31,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:31,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088517858] [2024-06-21 15:43:31,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:31,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:31,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:31,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:31,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:31,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088517858] [2024-06-21 15:43:31,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088517858] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:31,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:31,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 15:43:31,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507597869] [2024-06-21 15:43:31,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:31,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 15:43:31,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:31,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 15:43:31,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 15:43:32,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:43:32,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 81 transitions, 758 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:32,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:32,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:43:32,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:32,269 INFO L124 PetriNetUnfolderBase]: 249/447 cut-off events. [2024-06-21 15:43:32,270 INFO L125 PetriNetUnfolderBase]: For 10629/10629 co-relation queries the response was YES. [2024-06-21 15:43:32,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2778 conditions, 447 events. 249/447 cut-off events. For 10629/10629 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1691 event pairs, 48 based on Foata normal form. 2/447 useless extension candidates. Maximal degree in co-relation 2726. Up to 352 conditions per place. [2024-06-21 15:43:32,275 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 68 selfloop transitions, 26 changer transitions 0/96 dead transitions. [2024-06-21 15:43:32,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 96 transitions, 1017 flow [2024-06-21 15:43:32,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 15:43:32,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 15:43:32,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-21 15:43:32,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-21 15:43:32,276 INFO L175 Difference]: Start difference. First operand has 100 places, 81 transitions, 758 flow. Second operand 8 states and 90 transitions. [2024-06-21 15:43:32,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 96 transitions, 1017 flow [2024-06-21 15:43:32,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 96 transitions, 915 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-21 15:43:32,297 INFO L231 Difference]: Finished difference. Result has 100 places, 83 transitions, 743 flow [2024-06-21 15:43:32,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=656, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=743, PETRI_PLACES=100, PETRI_TRANSITIONS=83} [2024-06-21 15:43:32,297 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 70 predicate places. [2024-06-21 15:43:32,297 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 83 transitions, 743 flow [2024-06-21 15:43:32,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:32,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:32,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:32,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-21 15:43:32,298 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)] === [2024-06-21 15:43:32,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:32,299 INFO L85 PathProgramCache]: Analyzing trace with hash -2020582951, now seen corresponding path program 2 times [2024-06-21 15:43:32,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:32,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615700298] [2024-06-21 15:43:32,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:32,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:32,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:32,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:32,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:32,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615700298] [2024-06-21 15:43:32,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615700298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:32,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:32,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 15:43:32,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039379765] [2024-06-21 15:43:32,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:32,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 15:43:32,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:32,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 15:43:32,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 15:43:32,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:43:32,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 83 transitions, 743 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:32,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:32,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:43:32,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:33,219 INFO L124 PetriNetUnfolderBase]: 265/473 cut-off events. [2024-06-21 15:43:33,220 INFO L125 PetriNetUnfolderBase]: For 12335/12335 co-relation queries the response was YES. [2024-06-21 15:43:33,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2981 conditions, 473 events. 265/473 cut-off events. For 12335/12335 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1804 event pairs, 48 based on Foata normal form. 2/473 useless extension candidates. Maximal degree in co-relation 2930. Up to 345 conditions per place. [2024-06-21 15:43:33,224 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 66 selfloop transitions, 33 changer transitions 0/101 dead transitions. [2024-06-21 15:43:33,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 101 transitions, 1100 flow [2024-06-21 15:43:33,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 15:43:33,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 15:43:33,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-21 15:43:33,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-21 15:43:33,228 INFO L175 Difference]: Start difference. First operand has 100 places, 83 transitions, 743 flow. Second operand 8 states and 92 transitions. [2024-06-21 15:43:33,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 101 transitions, 1100 flow [2024-06-21 15:43:33,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 101 transitions, 1029 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-21 15:43:33,250 INFO L231 Difference]: Finished difference. Result has 102 places, 87 transitions, 808 flow [2024-06-21 15:43:33,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=672, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=808, PETRI_PLACES=102, PETRI_TRANSITIONS=87} [2024-06-21 15:43:33,251 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 72 predicate places. [2024-06-21 15:43:33,251 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 87 transitions, 808 flow [2024-06-21 15:43:33,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:33,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:33,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:33,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-21 15:43:33,252 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)] === [2024-06-21 15:43:33,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:33,253 INFO L85 PathProgramCache]: Analyzing trace with hash -2020582703, now seen corresponding path program 1 times [2024-06-21 15:43:33,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:33,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094272251] [2024-06-21 15:43:33,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:33,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:33,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:34,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:34,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:34,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094272251] [2024-06-21 15:43:34,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094272251] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:34,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:34,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 15:43:34,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752259860] [2024-06-21 15:43:34,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:34,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 15:43:34,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:34,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 15:43:34,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 15:43:34,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:43:34,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 87 transitions, 808 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:34,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:34,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:43:34,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:34,650 INFO L124 PetriNetUnfolderBase]: 274/488 cut-off events. [2024-06-21 15:43:34,650 INFO L125 PetriNetUnfolderBase]: For 13642/13642 co-relation queries the response was YES. [2024-06-21 15:43:34,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3117 conditions, 488 events. 274/488 cut-off events. For 13642/13642 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1874 event pairs, 51 based on Foata normal form. 3/489 useless extension candidates. Maximal degree in co-relation 3065. Up to 396 conditions per place. [2024-06-21 15:43:34,655 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 75 selfloop transitions, 27 changer transitions 0/104 dead transitions. [2024-06-21 15:43:34,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 104 transitions, 1101 flow [2024-06-21 15:43:34,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:43:34,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:43:34,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-21 15:43:34,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36200716845878134 [2024-06-21 15:43:34,656 INFO L175 Difference]: Start difference. First operand has 102 places, 87 transitions, 808 flow. Second operand 9 states and 101 transitions. [2024-06-21 15:43:34,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 104 transitions, 1101 flow [2024-06-21 15:43:34,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 104 transitions, 1043 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-21 15:43:34,678 INFO L231 Difference]: Finished difference. Result has 107 places, 90 transitions, 858 flow [2024-06-21 15:43:34,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=858, PETRI_PLACES=107, PETRI_TRANSITIONS=90} [2024-06-21 15:43:34,679 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 77 predicate places. [2024-06-21 15:43:34,679 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 90 transitions, 858 flow [2024-06-21 15:43:34,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:34,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:34,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:34,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-21 15:43:34,680 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)] === [2024-06-21 15:43:34,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:34,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1546245701, now seen corresponding path program 3 times [2024-06-21 15:43:34,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:34,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863942184] [2024-06-21 15:43:34,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:34,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:34,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:35,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:35,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:35,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863942184] [2024-06-21 15:43:35,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863942184] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:35,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:35,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 15:43:35,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511094515] [2024-06-21 15:43:35,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:35,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 15:43:35,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:35,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 15:43:35,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 15:43:35,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:43:35,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 90 transitions, 858 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:35,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:35,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:43:35,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:35,567 INFO L124 PetriNetUnfolderBase]: 270/482 cut-off events. [2024-06-21 15:43:35,567 INFO L125 PetriNetUnfolderBase]: For 13138/13138 co-relation queries the response was YES. [2024-06-21 15:43:35,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3121 conditions, 482 events. 270/482 cut-off events. For 13138/13138 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1843 event pairs, 52 based on Foata normal form. 2/482 useless extension candidates. Maximal degree in co-relation 3067. Up to 407 conditions per place. [2024-06-21 15:43:35,571 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 80 selfloop transitions, 23 changer transitions 0/105 dead transitions. [2024-06-21 15:43:35,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 105 transitions, 1114 flow [2024-06-21 15:43:35,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 15:43:35,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 15:43:35,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-21 15:43:35,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-21 15:43:35,573 INFO L175 Difference]: Start difference. First operand has 107 places, 90 transitions, 858 flow. Second operand 8 states and 92 transitions. [2024-06-21 15:43:35,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 105 transitions, 1114 flow [2024-06-21 15:43:35,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 105 transitions, 1018 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-21 15:43:35,600 INFO L231 Difference]: Finished difference. Result has 108 places, 90 transitions, 813 flow [2024-06-21 15:43:35,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=813, PETRI_PLACES=108, PETRI_TRANSITIONS=90} [2024-06-21 15:43:35,601 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 78 predicate places. [2024-06-21 15:43:35,602 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 90 transitions, 813 flow [2024-06-21 15:43:35,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:35,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:35,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:35,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-21 15:43:35,603 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)] === [2024-06-21 15:43:35,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:35,603 INFO L85 PathProgramCache]: Analyzing trace with hash -17918887, now seen corresponding path program 4 times [2024-06-21 15:43:35,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:35,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995140776] [2024-06-21 15:43:35,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:35,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:35,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:36,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:36,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:36,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995140776] [2024-06-21 15:43:36,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995140776] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:36,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:36,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 15:43:36,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125942954] [2024-06-21 15:43:36,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:36,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 15:43:36,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:36,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 15:43:36,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 15:43:36,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:43:36,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 90 transitions, 813 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:36,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:36,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:43:36,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:36,606 INFO L124 PetriNetUnfolderBase]: 286/509 cut-off events. [2024-06-21 15:43:36,606 INFO L125 PetriNetUnfolderBase]: For 15275/15278 co-relation queries the response was YES. [2024-06-21 15:43:36,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3332 conditions, 509 events. 286/509 cut-off events. For 15275/15278 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1992 event pairs, 58 based on Foata normal form. 2/508 useless extension candidates. Maximal degree in co-relation 3277. Up to 383 conditions per place. [2024-06-21 15:43:36,610 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 71 selfloop transitions, 33 changer transitions 0/106 dead transitions. [2024-06-21 15:43:36,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 106 transitions, 1193 flow [2024-06-21 15:43:36,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 15:43:36,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 15:43:36,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-21 15:43:36,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-21 15:43:36,611 INFO L175 Difference]: Start difference. First operand has 108 places, 90 transitions, 813 flow. Second operand 8 states and 92 transitions. [2024-06-21 15:43:36,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 106 transitions, 1193 flow [2024-06-21 15:43:36,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 106 transitions, 1123 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-21 15:43:36,630 INFO L231 Difference]: Finished difference. Result has 109 places, 94 transitions, 890 flow [2024-06-21 15:43:36,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=743, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=890, PETRI_PLACES=109, PETRI_TRANSITIONS=94} [2024-06-21 15:43:36,630 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 79 predicate places. [2024-06-21 15:43:36,631 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 94 transitions, 890 flow [2024-06-21 15:43:36,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:36,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:36,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:36,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-21 15:43:36,631 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)] === [2024-06-21 15:43:36,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:36,631 INFO L85 PathProgramCache]: Analyzing trace with hash -245819789, now seen corresponding path program 2 times [2024-06-21 15:43:36,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:36,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640472650] [2024-06-21 15:43:36,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:36,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:36,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:37,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:37,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:37,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640472650] [2024-06-21 15:43:37,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640472650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:37,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:37,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 15:43:37,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476339515] [2024-06-21 15:43:37,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:37,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 15:43:37,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:37,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 15:43:37,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 15:43:37,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:43:37,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 94 transitions, 890 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:37,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:37,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:43:37,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:38,161 INFO L124 PetriNetUnfolderBase]: 289/514 cut-off events. [2024-06-21 15:43:38,161 INFO L125 PetriNetUnfolderBase]: For 15988/15991 co-relation queries the response was YES. [2024-06-21 15:43:38,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3419 conditions, 514 events. 289/514 cut-off events. For 15988/15991 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1996 event pairs, 64 based on Foata normal form. 1/512 useless extension candidates. Maximal degree in co-relation 3363. Up to 443 conditions per place. [2024-06-21 15:43:38,164 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 78 selfloop transitions, 24 changer transitions 0/104 dead transitions. [2024-06-21 15:43:38,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 104 transitions, 1140 flow [2024-06-21 15:43:38,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:43:38,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:43:38,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-06-21 15:43:38,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33691756272401435 [2024-06-21 15:43:38,166 INFO L175 Difference]: Start difference. First operand has 109 places, 94 transitions, 890 flow. Second operand 9 states and 94 transitions. [2024-06-21 15:43:38,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 104 transitions, 1140 flow [2024-06-21 15:43:38,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 104 transitions, 1065 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-21 15:43:38,186 INFO L231 Difference]: Finished difference. Result has 114 places, 96 transitions, 900 flow [2024-06-21 15:43:38,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=815, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=900, PETRI_PLACES=114, PETRI_TRANSITIONS=96} [2024-06-21 15:43:38,187 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 84 predicate places. [2024-06-21 15:43:38,187 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 96 transitions, 900 flow [2024-06-21 15:43:38,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:38,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:38,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:38,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-21 15:43:38,188 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)] === [2024-06-21 15:43:38,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:38,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1179856323, now seen corresponding path program 3 times [2024-06-21 15:43:38,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:38,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735325484] [2024-06-21 15:43:38,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:38,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:38,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:39,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:39,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:39,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735325484] [2024-06-21 15:43:39,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735325484] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:39,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:39,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 15:43:39,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193666197] [2024-06-21 15:43:39,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:39,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 15:43:39,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:39,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 15:43:39,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 15:43:39,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:43:39,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 96 transitions, 900 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:39,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:39,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:43:39,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:39,874 INFO L124 PetriNetUnfolderBase]: 292/519 cut-off events. [2024-06-21 15:43:39,874 INFO L125 PetriNetUnfolderBase]: For 16760/16763 co-relation queries the response was YES. [2024-06-21 15:43:39,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3493 conditions, 519 events. 292/519 cut-off events. For 16760/16763 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2033 event pairs, 60 based on Foata normal form. 1/517 useless extension candidates. Maximal degree in co-relation 3435. Up to 430 conditions per place. [2024-06-21 15:43:39,878 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 73 selfloop transitions, 32 changer transitions 0/107 dead transitions. [2024-06-21 15:43:39,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 107 transitions, 1166 flow [2024-06-21 15:43:39,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:43:39,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:43:39,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-21 15:43:39,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-21 15:43:39,880 INFO L175 Difference]: Start difference. First operand has 114 places, 96 transitions, 900 flow. Second operand 9 states and 97 transitions. [2024-06-21 15:43:39,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 107 transitions, 1166 flow [2024-06-21 15:43:39,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 107 transitions, 1097 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-21 15:43:39,902 INFO L231 Difference]: Finished difference. Result has 116 places, 98 transitions, 936 flow [2024-06-21 15:43:39,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=831, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=936, PETRI_PLACES=116, PETRI_TRANSITIONS=98} [2024-06-21 15:43:39,902 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 86 predicate places. [2024-06-21 15:43:39,902 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 98 transitions, 936 flow [2024-06-21 15:43:39,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:39,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:39,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:39,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-21 15:43:39,903 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)] === [2024-06-21 15:43:39,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:39,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1401494605, now seen corresponding path program 5 times [2024-06-21 15:43:39,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:39,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638991853] [2024-06-21 15:43:39,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:39,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:39,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:40,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:40,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:40,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638991853] [2024-06-21 15:43:40,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638991853] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:40,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:40,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 15:43:40,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902623824] [2024-06-21 15:43:40,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:40,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 15:43:40,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:40,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 15:43:40,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 15:43:40,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:43:40,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 98 transitions, 936 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:40,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:40,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:43:40,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:40,920 INFO L124 PetriNetUnfolderBase]: 293/521 cut-off events. [2024-06-21 15:43:40,920 INFO L125 PetriNetUnfolderBase]: For 17954/17957 co-relation queries the response was YES. [2024-06-21 15:43:40,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3557 conditions, 521 events. 293/521 cut-off events. For 17954/17957 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2062 event pairs, 64 based on Foata normal form. 2/520 useless extension candidates. Maximal degree in co-relation 3498. Up to 337 conditions per place. [2024-06-21 15:43:40,925 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 67 selfloop transitions, 45 changer transitions 0/114 dead transitions. [2024-06-21 15:43:40,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 114 transitions, 1406 flow [2024-06-21 15:43:40,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 15:43:40,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 15:43:40,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-21 15:43:40,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-21 15:43:40,927 INFO L175 Difference]: Start difference. First operand has 116 places, 98 transitions, 936 flow. Second operand 8 states and 93 transitions. [2024-06-21 15:43:40,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 114 transitions, 1406 flow [2024-06-21 15:43:40,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 114 transitions, 1295 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-21 15:43:40,954 INFO L231 Difference]: Finished difference. Result has 117 places, 102 transitions, 1004 flow [2024-06-21 15:43:40,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=825, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1004, PETRI_PLACES=117, PETRI_TRANSITIONS=102} [2024-06-21 15:43:40,954 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 87 predicate places. [2024-06-21 15:43:40,954 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 102 transitions, 1004 flow [2024-06-21 15:43:40,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:40,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:40,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:40,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-21 15:43:40,955 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)] === [2024-06-21 15:43:40,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:40,956 INFO L85 PathProgramCache]: Analyzing trace with hash -9644429, now seen corresponding path program 4 times [2024-06-21 15:43:40,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:40,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507215689] [2024-06-21 15:43:40,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:40,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:40,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:41,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:41,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:41,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507215689] [2024-06-21 15:43:41,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507215689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:41,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:41,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 15:43:41,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389474531] [2024-06-21 15:43:41,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:41,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 15:43:41,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:41,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 15:43:41,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 15:43:41,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:43:41,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 102 transitions, 1004 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:41,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:41,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:43:41,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:42,188 INFO L124 PetriNetUnfolderBase]: 306/540 cut-off events. [2024-06-21 15:43:42,189 INFO L125 PetriNetUnfolderBase]: For 19716/19716 co-relation queries the response was YES. [2024-06-21 15:43:42,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3817 conditions, 540 events. 306/540 cut-off events. For 19716/19716 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2127 event pairs, 50 based on Foata normal form. 1/540 useless extension candidates. Maximal degree in co-relation 3757. Up to 496 conditions per place. [2024-06-21 15:43:42,192 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 97 selfloop transitions, 21 changer transitions 0/120 dead transitions. [2024-06-21 15:43:42,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 120 transitions, 1505 flow [2024-06-21 15:43:42,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:43:42,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:43:42,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-06-21 15:43:42,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33691756272401435 [2024-06-21 15:43:42,194 INFO L175 Difference]: Start difference. First operand has 117 places, 102 transitions, 1004 flow. Second operand 9 states and 94 transitions. [2024-06-21 15:43:42,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 120 transitions, 1505 flow [2024-06-21 15:43:42,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 120 transitions, 1459 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-21 15:43:42,218 INFO L231 Difference]: Finished difference. Result has 122 places, 109 transitions, 1117 flow [2024-06-21 15:43:42,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=958, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1117, PETRI_PLACES=122, PETRI_TRANSITIONS=109} [2024-06-21 15:43:42,219 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 92 predicate places. [2024-06-21 15:43:42,219 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 109 transitions, 1117 flow [2024-06-21 15:43:42,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:42,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:42,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:42,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-21 15:43:42,219 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)] === [2024-06-21 15:43:42,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:42,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1756567627, now seen corresponding path program 5 times [2024-06-21 15:43:42,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:42,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010349159] [2024-06-21 15:43:42,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:42,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:42,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:43,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:43,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:43,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010349159] [2024-06-21 15:43:43,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010349159] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:43,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:43,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 15:43:43,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032780094] [2024-06-21 15:43:43,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:43,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 15:43:43,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:43,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 15:43:43,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 15:43:43,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:43:43,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 109 transitions, 1117 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:43,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:43,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:43:43,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:43,477 INFO L124 PetriNetUnfolderBase]: 307/542 cut-off events. [2024-06-21 15:43:43,477 INFO L125 PetriNetUnfolderBase]: For 20332/20332 co-relation queries the response was YES. [2024-06-21 15:43:43,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3836 conditions, 542 events. 307/542 cut-off events. For 20332/20332 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2139 event pairs, 50 based on Foata normal form. 2/543 useless extension candidates. Maximal degree in co-relation 3774. Up to 509 conditions per place. [2024-06-21 15:43:43,481 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 101 selfloop transitions, 18 changer transitions 0/121 dead transitions. [2024-06-21 15:43:43,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 121 transitions, 1482 flow [2024-06-21 15:43:43,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:43:43,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:43:43,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 91 transitions. [2024-06-21 15:43:43,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32616487455197135 [2024-06-21 15:43:43,483 INFO L175 Difference]: Start difference. First operand has 122 places, 109 transitions, 1117 flow. Second operand 9 states and 91 transitions. [2024-06-21 15:43:43,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 121 transitions, 1482 flow [2024-06-21 15:43:43,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 121 transitions, 1401 flow, removed 35 selfloop flow, removed 4 redundant places. [2024-06-21 15:43:43,528 INFO L231 Difference]: Finished difference. Result has 128 places, 111 transitions, 1124 flow [2024-06-21 15:43:43,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1038, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1124, PETRI_PLACES=128, PETRI_TRANSITIONS=111} [2024-06-21 15:43:43,528 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 98 predicate places. [2024-06-21 15:43:43,528 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 111 transitions, 1124 flow [2024-06-21 15:43:43,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:43,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:43,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:43,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-21 15:43:43,529 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)] === [2024-06-21 15:43:43,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:43,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1409775325, now seen corresponding path program 6 times [2024-06-21 15:43:43,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:43,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43330590] [2024-06-21 15:43:43,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:43,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:43,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:44,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:44,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:44,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43330590] [2024-06-21 15:43:44,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43330590] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:44,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:44,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 15:43:44,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727748743] [2024-06-21 15:43:44,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:44,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 15:43:44,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:44,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 15:43:44,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 15:43:44,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:43:44,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 111 transitions, 1124 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:44,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:44,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:43:44,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:44,476 INFO L124 PetriNetUnfolderBase]: 303/536 cut-off events. [2024-06-21 15:43:44,476 INFO L125 PetriNetUnfolderBase]: For 20184/20184 co-relation queries the response was YES. [2024-06-21 15:43:44,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3717 conditions, 536 events. 303/536 cut-off events. For 20184/20184 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2129 event pairs, 50 based on Foata normal form. 2/537 useless extension candidates. Maximal degree in co-relation 3652. Up to 510 conditions per place. [2024-06-21 15:43:44,481 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 105 selfloop transitions, 13 changer transitions 0/120 dead transitions. [2024-06-21 15:43:44,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 120 transitions, 1387 flow [2024-06-21 15:43:44,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 15:43:44,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 15:43:44,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 81 transitions. [2024-06-21 15:43:44,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32661290322580644 [2024-06-21 15:43:44,483 INFO L175 Difference]: Start difference. First operand has 128 places, 111 transitions, 1124 flow. Second operand 8 states and 81 transitions. [2024-06-21 15:43:44,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 120 transitions, 1387 flow [2024-06-21 15:43:44,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 120 transitions, 1331 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-21 15:43:44,531 INFO L231 Difference]: Finished difference. Result has 129 places, 111 transitions, 1099 flow [2024-06-21 15:43:44,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1068, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1099, PETRI_PLACES=129, PETRI_TRANSITIONS=111} [2024-06-21 15:43:44,532 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 99 predicate places. [2024-06-21 15:43:44,532 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 111 transitions, 1099 flow [2024-06-21 15:43:44,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:44,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:44,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:44,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-21 15:43:44,533 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)] === [2024-06-21 15:43:44,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:44,533 INFO L85 PathProgramCache]: Analyzing trace with hash -9336847, now seen corresponding path program 1 times [2024-06-21 15:43:44,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:44,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965175805] [2024-06-21 15:43:44,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:44,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:44,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:46,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:46,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:46,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965175805] [2024-06-21 15:43:46,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965175805] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:46,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:46,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:43:46,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428966433] [2024-06-21 15:43:46,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:46,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:43:46,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:46,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:43:46,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:43:46,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:43:46,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 111 transitions, 1099 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 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) [2024-06-21 15:43:46,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:46,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:43:46,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:46,626 INFO L124 PetriNetUnfolderBase]: 300/531 cut-off events. [2024-06-21 15:43:46,626 INFO L125 PetriNetUnfolderBase]: For 19927/19927 co-relation queries the response was YES. [2024-06-21 15:43:46,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3617 conditions, 531 events. 300/531 cut-off events. For 19927/19927 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2095 event pairs, 48 based on Foata normal form. 2/532 useless extension candidates. Maximal degree in co-relation 3551. Up to 502 conditions per place. [2024-06-21 15:43:46,630 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 105 selfloop transitions, 14 changer transitions 0/121 dead transitions. [2024-06-21 15:43:46,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 121 transitions, 1362 flow [2024-06-21 15:43:46,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:43:46,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:43:46,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 87 transitions. [2024-06-21 15:43:46,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3118279569892473 [2024-06-21 15:43:46,631 INFO L175 Difference]: Start difference. First operand has 129 places, 111 transitions, 1099 flow. Second operand 9 states and 87 transitions. [2024-06-21 15:43:46,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 121 transitions, 1362 flow [2024-06-21 15:43:46,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 121 transitions, 1327 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-21 15:43:46,677 INFO L231 Difference]: Finished difference. Result has 131 places, 111 transitions, 1096 flow [2024-06-21 15:43:46,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1064, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1096, PETRI_PLACES=131, PETRI_TRANSITIONS=111} [2024-06-21 15:43:46,678 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 101 predicate places. [2024-06-21 15:43:46,678 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 111 transitions, 1096 flow [2024-06-21 15:43:46,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 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) [2024-06-21 15:43:46,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:46,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:46,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-21 15:43:46,679 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)] === [2024-06-21 15:43:46,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:46,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1648165387, now seen corresponding path program 1 times [2024-06-21 15:43:46,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:46,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808149930] [2024-06-21 15:43:46,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:46,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:46,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:47,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:47,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:47,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808149930] [2024-06-21 15:43:47,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808149930] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:47,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:47,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 15:43:47,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719134504] [2024-06-21 15:43:47,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:47,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 15:43:47,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:47,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 15:43:47,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 15:43:47,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:43:47,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 111 transitions, 1096 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:47,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:47,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:43:47,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:47,789 INFO L124 PetriNetUnfolderBase]: 304/539 cut-off events. [2024-06-21 15:43:47,789 INFO L125 PetriNetUnfolderBase]: For 20865/20865 co-relation queries the response was YES. [2024-06-21 15:43:47,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3681 conditions, 539 events. 304/539 cut-off events. For 20865/20865 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2141 event pairs, 27 based on Foata normal form. 2/540 useless extension candidates. Maximal degree in co-relation 3614. Up to 433 conditions per place. [2024-06-21 15:43:47,793 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 105 selfloop transitions, 18 changer transitions 0/125 dead transitions. [2024-06-21 15:43:47,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 125 transitions, 1389 flow [2024-06-21 15:43:47,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 15:43:47,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 15:43:47,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 85 transitions. [2024-06-21 15:43:47,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34274193548387094 [2024-06-21 15:43:47,795 INFO L175 Difference]: Start difference. First operand has 131 places, 111 transitions, 1096 flow. Second operand 8 states and 85 transitions. [2024-06-21 15:43:47,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 125 transitions, 1389 flow [2024-06-21 15:43:47,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 125 transitions, 1347 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-21 15:43:47,848 INFO L231 Difference]: Finished difference. Result has 131 places, 112 transitions, 1110 flow [2024-06-21 15:43:47,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1054, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1110, PETRI_PLACES=131, PETRI_TRANSITIONS=112} [2024-06-21 15:43:47,848 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 101 predicate places. [2024-06-21 15:43:47,849 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 112 transitions, 1110 flow [2024-06-21 15:43:47,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:47,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:47,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:47,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-21 15:43:47,849 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)] === [2024-06-21 15:43:47,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:47,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1879996559, now seen corresponding path program 2 times [2024-06-21 15:43:47,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:47,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529113135] [2024-06-21 15:43:47,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:47,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:47,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:48,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:48,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:48,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529113135] [2024-06-21 15:43:48,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529113135] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:48,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:48,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 15:43:48,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877122356] [2024-06-21 15:43:48,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:48,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 15:43:48,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:48,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 15:43:48,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 15:43:48,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:43:48,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 112 transitions, 1110 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:48,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:48,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:43:48,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:48,981 INFO L124 PetriNetUnfolderBase]: 308/547 cut-off events. [2024-06-21 15:43:48,981 INFO L125 PetriNetUnfolderBase]: For 21982/21982 co-relation queries the response was YES. [2024-06-21 15:43:48,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3752 conditions, 547 events. 308/547 cut-off events. For 21982/21982 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2200 event pairs, 47 based on Foata normal form. 2/548 useless extension candidates. Maximal degree in co-relation 3685. Up to 473 conditions per place. [2024-06-21 15:43:48,985 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 104 selfloop transitions, 19 changer transitions 0/125 dead transitions. [2024-06-21 15:43:48,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 125 transitions, 1403 flow [2024-06-21 15:43:48,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 15:43:48,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 15:43:48,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-21 15:43:48,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-21 15:43:48,990 INFO L175 Difference]: Start difference. First operand has 131 places, 112 transitions, 1110 flow. Second operand 8 states and 88 transitions. [2024-06-21 15:43:48,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 125 transitions, 1403 flow [2024-06-21 15:43:49,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 125 transitions, 1357 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-21 15:43:49,028 INFO L231 Difference]: Finished difference. Result has 133 places, 113 transitions, 1124 flow [2024-06-21 15:43:49,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1064, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1124, PETRI_PLACES=133, PETRI_TRANSITIONS=113} [2024-06-21 15:43:49,029 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 103 predicate places. [2024-06-21 15:43:49,029 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 113 transitions, 1124 flow [2024-06-21 15:43:49,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:49,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:49,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:49,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-21 15:43:49,029 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)] === [2024-06-21 15:43:49,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:49,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1879992839, now seen corresponding path program 3 times [2024-06-21 15:43:49,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:49,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852356662] [2024-06-21 15:43:49,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:49,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:49,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:49,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:49,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:49,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852356662] [2024-06-21 15:43:49,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852356662] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:49,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:49,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 15:43:49,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724478867] [2024-06-21 15:43:49,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:49,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 15:43:49,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:49,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 15:43:49,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 15:43:49,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:43:49,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 113 transitions, 1124 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:49,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:49,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:43:49,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:50,257 INFO L124 PetriNetUnfolderBase]: 312/555 cut-off events. [2024-06-21 15:43:50,258 INFO L125 PetriNetUnfolderBase]: For 23480/23480 co-relation queries the response was YES. [2024-06-21 15:43:50,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3814 conditions, 555 events. 312/555 cut-off events. For 23480/23480 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2256 event pairs, 47 based on Foata normal form. 2/556 useless extension candidates. Maximal degree in co-relation 3746. Up to 475 conditions per place. [2024-06-21 15:43:50,262 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 101 selfloop transitions, 23 changer transitions 0/126 dead transitions. [2024-06-21 15:43:50,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 126 transitions, 1425 flow [2024-06-21 15:43:50,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 15:43:50,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 15:43:50,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-21 15:43:50,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-21 15:43:50,263 INFO L175 Difference]: Start difference. First operand has 133 places, 113 transitions, 1124 flow. Second operand 8 states and 90 transitions. [2024-06-21 15:43:50,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 126 transitions, 1425 flow [2024-06-21 15:43:50,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 126 transitions, 1375 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-21 15:43:50,314 INFO L231 Difference]: Finished difference. Result has 135 places, 114 transitions, 1145 flow [2024-06-21 15:43:50,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1074, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1145, PETRI_PLACES=135, PETRI_TRANSITIONS=114} [2024-06-21 15:43:50,315 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 105 predicate places. [2024-06-21 15:43:50,315 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 114 transitions, 1145 flow [2024-06-21 15:43:50,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:50,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:50,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:50,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-21 15:43:50,316 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)] === [2024-06-21 15:43:50,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:50,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1879992684, now seen corresponding path program 1 times [2024-06-21 15:43:50,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:50,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59792982] [2024-06-21 15:43:50,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:50,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:50,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:50,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:50,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:50,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59792982] [2024-06-21 15:43:50,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59792982] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:50,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:50,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 15:43:50,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639338977] [2024-06-21 15:43:50,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:50,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 15:43:50,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:50,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 15:43:50,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 15:43:51,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:43:51,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 114 transitions, 1145 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:51,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:51,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:43:51,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:51,348 INFO L124 PetriNetUnfolderBase]: 310/552 cut-off events. [2024-06-21 15:43:51,348 INFO L125 PetriNetUnfolderBase]: For 23003/23003 co-relation queries the response was YES. [2024-06-21 15:43:51,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3777 conditions, 552 events. 310/552 cut-off events. For 23003/23003 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2231 event pairs, 46 based on Foata normal form. 1/552 useless extension candidates. Maximal degree in co-relation 3708. Up to 466 conditions per place. [2024-06-21 15:43:51,352 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 97 selfloop transitions, 27 changer transitions 0/126 dead transitions. [2024-06-21 15:43:51,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 126 transitions, 1432 flow [2024-06-21 15:43:51,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 15:43:51,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 15:43:51,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-21 15:43:51,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-21 15:43:51,353 INFO L175 Difference]: Start difference. First operand has 135 places, 114 transitions, 1145 flow. Second operand 8 states and 92 transitions. [2024-06-21 15:43:51,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 126 transitions, 1432 flow [2024-06-21 15:43:51,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 126 transitions, 1367 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-21 15:43:51,424 INFO L231 Difference]: Finished difference. Result has 137 places, 114 transitions, 1143 flow [2024-06-21 15:43:51,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1080, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1143, PETRI_PLACES=137, PETRI_TRANSITIONS=114} [2024-06-21 15:43:51,425 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 107 predicate places. [2024-06-21 15:43:51,425 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 114 transitions, 1143 flow [2024-06-21 15:43:51,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:51,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:51,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:51,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-21 15:43:51,426 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)] === [2024-06-21 15:43:51,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:51,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1780721521, now seen corresponding path program 4 times [2024-06-21 15:43:51,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:51,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170836170] [2024-06-21 15:43:51,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:51,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:51,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:52,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:52,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:52,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170836170] [2024-06-21 15:43:52,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170836170] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:52,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:52,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 15:43:52,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086963493] [2024-06-21 15:43:52,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:52,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 15:43:52,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:52,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 15:43:52,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 15:43:52,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:43:52,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 114 transitions, 1143 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:52,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:52,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:43:52,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:52,531 INFO L124 PetriNetUnfolderBase]: 314/560 cut-off events. [2024-06-21 15:43:52,531 INFO L125 PetriNetUnfolderBase]: For 24960/24960 co-relation queries the response was YES. [2024-06-21 15:43:52,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3846 conditions, 560 events. 314/560 cut-off events. For 24960/24960 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2274 event pairs, 29 based on Foata normal form. 2/561 useless extension candidates. Maximal degree in co-relation 3776. Up to 468 conditions per place. [2024-06-21 15:43:52,535 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 107 selfloop transitions, 21 changer transitions 0/130 dead transitions. [2024-06-21 15:43:52,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 130 transitions, 1461 flow [2024-06-21 15:43:52,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 15:43:52,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 15:43:52,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-21 15:43:52,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36693548387096775 [2024-06-21 15:43:52,539 INFO L175 Difference]: Start difference. First operand has 137 places, 114 transitions, 1143 flow. Second operand 8 states and 91 transitions. [2024-06-21 15:43:52,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 130 transitions, 1461 flow [2024-06-21 15:43:52,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 130 transitions, 1388 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-21 15:43:52,586 INFO L231 Difference]: Finished difference. Result has 138 places, 115 transitions, 1138 flow [2024-06-21 15:43:52,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1070, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1138, PETRI_PLACES=138, PETRI_TRANSITIONS=115} [2024-06-21 15:43:52,587 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 108 predicate places. [2024-06-21 15:43:52,587 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 115 transitions, 1138 flow [2024-06-21 15:43:52,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:52,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:52,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:52,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-21 15:43:52,588 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)] === [2024-06-21 15:43:52,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:52,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1780725241, now seen corresponding path program 5 times [2024-06-21 15:43:52,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:52,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551678261] [2024-06-21 15:43:52,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:52,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:52,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:53,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:53,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:53,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551678261] [2024-06-21 15:43:53,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551678261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:53,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:53,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 15:43:53,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305116798] [2024-06-21 15:43:53,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:53,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 15:43:53,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:53,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 15:43:53,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 15:43:53,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:43:53,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 115 transitions, 1138 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:53,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:53,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:43:53,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:53,681 INFO L124 PetriNetUnfolderBase]: 318/568 cut-off events. [2024-06-21 15:43:53,681 INFO L125 PetriNetUnfolderBase]: For 26362/26362 co-relation queries the response was YES. [2024-06-21 15:43:53,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3918 conditions, 568 events. 318/568 cut-off events. For 26362/26362 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2329 event pairs, 48 based on Foata normal form. 2/569 useless extension candidates. Maximal degree in co-relation 3847. Up to 491 conditions per place. [2024-06-21 15:43:53,685 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 106 selfloop transitions, 23 changer transitions 0/131 dead transitions. [2024-06-21 15:43:53,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 131 transitions, 1464 flow [2024-06-21 15:43:53,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 15:43:53,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 15:43:53,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-21 15:43:53,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-21 15:43:53,686 INFO L175 Difference]: Start difference. First operand has 138 places, 115 transitions, 1138 flow. Second operand 8 states and 92 transitions. [2024-06-21 15:43:53,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 131 transitions, 1464 flow [2024-06-21 15:43:53,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 131 transitions, 1406 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-21 15:43:53,739 INFO L231 Difference]: Finished difference. Result has 140 places, 116 transitions, 1155 flow [2024-06-21 15:43:53,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1080, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1155, PETRI_PLACES=140, PETRI_TRANSITIONS=116} [2024-06-21 15:43:53,739 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 110 predicate places. [2024-06-21 15:43:53,739 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 116 transitions, 1155 flow [2024-06-21 15:43:53,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:53,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:53,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:53,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-21 15:43:53,740 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)] === [2024-06-21 15:43:53,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:53,740 INFO L85 PathProgramCache]: Analyzing trace with hash -534311182, now seen corresponding path program 2 times [2024-06-21 15:43:53,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:53,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528143206] [2024-06-21 15:43:53,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:53,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:53,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:54,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:54,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:54,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528143206] [2024-06-21 15:43:54,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528143206] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:54,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:54,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 15:43:54,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058059170] [2024-06-21 15:43:54,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:54,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 15:43:54,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:54,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 15:43:54,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 15:43:54,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:43:54,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 116 transitions, 1155 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:54,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:54,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:43:54,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:54,869 INFO L124 PetriNetUnfolderBase]: 316/565 cut-off events. [2024-06-21 15:43:54,869 INFO L125 PetriNetUnfolderBase]: For 25624/25624 co-relation queries the response was YES. [2024-06-21 15:43:54,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3856 conditions, 565 events. 316/565 cut-off events. For 25624/25624 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2326 event pairs, 48 based on Foata normal form. 1/565 useless extension candidates. Maximal degree in co-relation 3784. Up to 485 conditions per place. [2024-06-21 15:43:54,872 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 103 selfloop transitions, 26 changer transitions 0/131 dead transitions. [2024-06-21 15:43:54,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 131 transitions, 1463 flow [2024-06-21 15:43:54,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 15:43:54,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 15:43:54,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-21 15:43:54,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-21 15:43:54,873 INFO L175 Difference]: Start difference. First operand has 140 places, 116 transitions, 1155 flow. Second operand 8 states and 93 transitions. [2024-06-21 15:43:54,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 131 transitions, 1463 flow [2024-06-21 15:43:54,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 131 transitions, 1396 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-21 15:43:54,926 INFO L231 Difference]: Finished difference. Result has 142 places, 116 transitions, 1148 flow [2024-06-21 15:43:54,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1088, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1148, PETRI_PLACES=142, PETRI_TRANSITIONS=116} [2024-06-21 15:43:54,927 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 112 predicate places. [2024-06-21 15:43:54,927 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 116 transitions, 1148 flow [2024-06-21 15:43:54,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:54,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:54,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:54,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-21 15:43:54,928 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)] === [2024-06-21 15:43:54,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:54,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1622617505, now seen corresponding path program 6 times [2024-06-21 15:43:54,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:54,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873947778] [2024-06-21 15:43:54,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:54,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:54,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:55,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:55,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:55,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873947778] [2024-06-21 15:43:55,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873947778] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:55,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:55,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 15:43:55,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560326747] [2024-06-21 15:43:55,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:55,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 15:43:55,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:55,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 15:43:55,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 15:43:55,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:43:55,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 116 transitions, 1148 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:55,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:55,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:43:55,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:55,885 INFO L124 PetriNetUnfolderBase]: 320/574 cut-off events. [2024-06-21 15:43:55,886 INFO L125 PetriNetUnfolderBase]: For 27803/27803 co-relation queries the response was YES. [2024-06-21 15:43:55,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3919 conditions, 574 events. 320/574 cut-off events. For 27803/27803 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2387 event pairs, 48 based on Foata normal form. 2/574 useless extension candidates. Maximal degree in co-relation 3846. Up to 481 conditions per place. [2024-06-21 15:43:55,890 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 103 selfloop transitions, 25 changer transitions 0/130 dead transitions. [2024-06-21 15:43:55,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 130 transitions, 1469 flow [2024-06-21 15:43:55,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 15:43:55,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 15:43:55,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-21 15:43:55,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3588709677419355 [2024-06-21 15:43:55,892 INFO L175 Difference]: Start difference. First operand has 142 places, 116 transitions, 1148 flow. Second operand 8 states and 89 transitions. [2024-06-21 15:43:55,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 130 transitions, 1469 flow [2024-06-21 15:43:55,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 130 transitions, 1296 flow, removed 15 selfloop flow, removed 11 redundant places. [2024-06-21 15:43:55,964 INFO L231 Difference]: Finished difference. Result has 139 places, 117 transitions, 1055 flow [2024-06-21 15:43:55,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=975, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1055, PETRI_PLACES=139, PETRI_TRANSITIONS=117} [2024-06-21 15:43:55,965 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 109 predicate places. [2024-06-21 15:43:55,965 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 117 transitions, 1055 flow [2024-06-21 15:43:55,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:55,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:55,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:55,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-21 15:43:55,966 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)] === [2024-06-21 15:43:55,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:55,966 INFO L85 PathProgramCache]: Analyzing trace with hash -534161235, now seen corresponding path program 1 times [2024-06-21 15:43:55,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:55,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336993386] [2024-06-21 15:43:55,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:55,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:55,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:56,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:56,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:56,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336993386] [2024-06-21 15:43:56,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336993386] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:56,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:56,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 15:43:56,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037843645] [2024-06-21 15:43:56,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:56,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 15:43:56,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:56,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 15:43:56,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-21 15:43:56,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:43:56,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 117 transitions, 1055 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:56,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:56,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:43:56,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:57,238 INFO L124 PetriNetUnfolderBase]: 346/620 cut-off events. [2024-06-21 15:43:57,238 INFO L125 PetriNetUnfolderBase]: For 26907/26907 co-relation queries the response was YES. [2024-06-21 15:43:57,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3977 conditions, 620 events. 346/620 cut-off events. For 26907/26907 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2611 event pairs, 58 based on Foata normal form. 1/617 useless extension candidates. Maximal degree in co-relation 3907. Up to 525 conditions per place. [2024-06-21 15:43:57,242 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 114 selfloop transitions, 28 changer transitions 0/144 dead transitions. [2024-06-21 15:43:57,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 144 transitions, 1523 flow [2024-06-21 15:43:57,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:43:57,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:43:57,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-21 15:43:57,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35842293906810035 [2024-06-21 15:43:57,243 INFO L175 Difference]: Start difference. First operand has 139 places, 117 transitions, 1055 flow. Second operand 9 states and 100 transitions. [2024-06-21 15:43:57,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 144 transitions, 1523 flow [2024-06-21 15:43:57,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 144 transitions, 1439 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-21 15:43:57,304 INFO L231 Difference]: Finished difference. Result has 147 places, 131 transitions, 1222 flow [2024-06-21 15:43:57,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=985, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1222, PETRI_PLACES=147, PETRI_TRANSITIONS=131} [2024-06-21 15:43:57,304 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 117 predicate places. [2024-06-21 15:43:57,304 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 131 transitions, 1222 flow [2024-06-21 15:43:57,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:57,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:57,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:57,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-21 15:43:57,305 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)] === [2024-06-21 15:43:57,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:57,305 INFO L85 PathProgramCache]: Analyzing trace with hash -347794375, now seen corresponding path program 2 times [2024-06-21 15:43:57,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:57,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468338227] [2024-06-21 15:43:57,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:57,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:57,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:58,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:58,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:58,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468338227] [2024-06-21 15:43:58,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468338227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:58,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:58,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 15:43:58,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069385242] [2024-06-21 15:43:58,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:58,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 15:43:58,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:58,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 15:43:58,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 15:43:58,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:43:58,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 131 transitions, 1222 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:58,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:58,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:43:58,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:58,522 INFO L124 PetriNetUnfolderBase]: 376/670 cut-off events. [2024-06-21 15:43:58,522 INFO L125 PetriNetUnfolderBase]: For 29064/29064 co-relation queries the response was YES. [2024-06-21 15:43:58,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4361 conditions, 670 events. 376/670 cut-off events. For 29064/29064 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2902 event pairs, 49 based on Foata normal form. 2/670 useless extension candidates. Maximal degree in co-relation 4284. Up to 547 conditions per place. [2024-06-21 15:43:58,527 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 127 selfloop transitions, 33 changer transitions 0/162 dead transitions. [2024-06-21 15:43:58,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 162 transitions, 1752 flow [2024-06-21 15:43:58,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:43:58,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:43:58,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-21 15:43:58,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-21 15:43:58,528 INFO L175 Difference]: Start difference. First operand has 147 places, 131 transitions, 1222 flow. Second operand 10 states and 110 transitions. [2024-06-21 15:43:58,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 162 transitions, 1752 flow [2024-06-21 15:43:58,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 162 transitions, 1696 flow, removed 21 selfloop flow, removed 2 redundant places. [2024-06-21 15:43:58,589 INFO L231 Difference]: Finished difference. Result has 159 places, 144 transitions, 1429 flow [2024-06-21 15:43:58,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1184, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1429, PETRI_PLACES=159, PETRI_TRANSITIONS=144} [2024-06-21 15:43:58,590 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 129 predicate places. [2024-06-21 15:43:58,590 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 144 transitions, 1429 flow [2024-06-21 15:43:58,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:58,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:58,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:58,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-21 15:43:58,590 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)] === [2024-06-21 15:43:58,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:58,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1990729211, now seen corresponding path program 3 times [2024-06-21 15:43:58,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:58,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876916662] [2024-06-21 15:43:58,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:58,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:58,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:59,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:59,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:59,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876916662] [2024-06-21 15:43:59,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876916662] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:59,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:59,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 15:43:59,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671982824] [2024-06-21 15:43:59,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:59,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 15:43:59,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:59,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 15:43:59,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 15:43:59,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:43:59,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 144 transitions, 1429 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:59,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:59,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:43:59,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:59,849 INFO L124 PetriNetUnfolderBase]: 389/692 cut-off events. [2024-06-21 15:43:59,849 INFO L125 PetriNetUnfolderBase]: For 30566/30566 co-relation queries the response was YES. [2024-06-21 15:43:59,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4589 conditions, 692 events. 389/692 cut-off events. For 30566/30566 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3015 event pairs, 56 based on Foata normal form. 2/692 useless extension candidates. Maximal degree in co-relation 4506. Up to 577 conditions per place. [2024-06-21 15:43:59,855 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 134 selfloop transitions, 32 changer transitions 0/168 dead transitions. [2024-06-21 15:43:59,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 168 transitions, 1900 flow [2024-06-21 15:43:59,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:43:59,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:43:59,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-21 15:43:59,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-21 15:43:59,856 INFO L175 Difference]: Start difference. First operand has 159 places, 144 transitions, 1429 flow. Second operand 10 states and 110 transitions. [2024-06-21 15:43:59,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 168 transitions, 1900 flow [2024-06-21 15:43:59,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 168 transitions, 1834 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-21 15:43:59,934 INFO L231 Difference]: Finished difference. Result has 169 places, 151 transitions, 1543 flow [2024-06-21 15:43:59,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1364, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1543, PETRI_PLACES=169, PETRI_TRANSITIONS=151} [2024-06-21 15:43:59,935 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 139 predicate places. [2024-06-21 15:43:59,935 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 151 transitions, 1543 flow [2024-06-21 15:43:59,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:59,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:59,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:59,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-21 15:43:59,936 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)] === [2024-06-21 15:43:59,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:59,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1985165021, now seen corresponding path program 4 times [2024-06-21 15:43:59,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:59,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149173404] [2024-06-21 15:43:59,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:59,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:59,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:44:00,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:44:00,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:44:00,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149173404] [2024-06-21 15:44:00,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149173404] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:44:00,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:44:00,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 15:44:00,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407975508] [2024-06-21 15:44:00,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:44:00,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 15:44:00,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:44:00,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 15:44:00,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 15:44:00,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:44:00,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 151 transitions, 1543 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:44:00,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:44:00,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:44:00,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:44:01,043 INFO L124 PetriNetUnfolderBase]: 416/737 cut-off events. [2024-06-21 15:44:01,043 INFO L125 PetriNetUnfolderBase]: For 33812/33812 co-relation queries the response was YES. [2024-06-21 15:44:01,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4893 conditions, 737 events. 416/737 cut-off events. For 33812/33812 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3237 event pairs, 53 based on Foata normal form. 4/739 useless extension candidates. Maximal degree in co-relation 4806. Up to 574 conditions per place. [2024-06-21 15:44:01,048 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 134 selfloop transitions, 40 changer transitions 0/176 dead transitions. [2024-06-21 15:44:01,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 176 transitions, 2028 flow [2024-06-21 15:44:01,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:44:01,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:44:01,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-21 15:44:01,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-21 15:44:01,049 INFO L175 Difference]: Start difference. First operand has 169 places, 151 transitions, 1543 flow. Second operand 10 states and 112 transitions. [2024-06-21 15:44:01,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 176 transitions, 2028 flow [2024-06-21 15:44:01,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 176 transitions, 1935 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-21 15:44:01,126 INFO L231 Difference]: Finished difference. Result has 176 places, 158 transitions, 1626 flow [2024-06-21 15:44:01,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1450, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1626, PETRI_PLACES=176, PETRI_TRANSITIONS=158} [2024-06-21 15:44:01,126 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 146 predicate places. [2024-06-21 15:44:01,126 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 158 transitions, 1626 flow [2024-06-21 15:44:01,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:44:01,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:44:01,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:44:01,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-21 15:44:01,127 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)] === [2024-06-21 15:44:01,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:44:01,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1985157581, now seen corresponding path program 5 times [2024-06-21 15:44:01,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:44:01,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870697235] [2024-06-21 15:44:01,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:44:01,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:44:01,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:44:02,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:44:02,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:44:02,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870697235] [2024-06-21 15:44:02,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870697235] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:44:02,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:44:02,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 15:44:02,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275868735] [2024-06-21 15:44:02,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:44:02,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 15:44:02,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:44:02,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 15:44:02,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 15:44:02,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:44:02,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 158 transitions, 1626 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:44:02,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:44:02,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:44:02,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:44:02,439 INFO L124 PetriNetUnfolderBase]: 431/762 cut-off events. [2024-06-21 15:44:02,439 INFO L125 PetriNetUnfolderBase]: For 33556/33556 co-relation queries the response was YES. [2024-06-21 15:44:02,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5102 conditions, 762 events. 431/762 cut-off events. For 33556/33556 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3407 event pairs, 55 based on Foata normal form. 2/762 useless extension candidates. Maximal degree in co-relation 5012. Up to 574 conditions per place. [2024-06-21 15:44:02,445 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 132 selfloop transitions, 48 changer transitions 0/182 dead transitions. [2024-06-21 15:44:02,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 182 transitions, 2138 flow [2024-06-21 15:44:02,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:44:02,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:44:02,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-21 15:44:02,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-21 15:44:02,446 INFO L175 Difference]: Start difference. First operand has 176 places, 158 transitions, 1626 flow. Second operand 10 states and 112 transitions. [2024-06-21 15:44:02,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 182 transitions, 2138 flow [2024-06-21 15:44:02,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 182 transitions, 2045 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-21 15:44:02,530 INFO L231 Difference]: Finished difference. Result has 181 places, 165 transitions, 1756 flow [2024-06-21 15:44:02,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1548, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1756, PETRI_PLACES=181, PETRI_TRANSITIONS=165} [2024-06-21 15:44:02,531 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 151 predicate places. [2024-06-21 15:44:02,531 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 165 transitions, 1756 flow [2024-06-21 15:44:02,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:44:02,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:44:02,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:44:02,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-21 15:44:02,532 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)] === [2024-06-21 15:44:02,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:44:02,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1985157302, now seen corresponding path program 1 times [2024-06-21 15:44:02,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:44:02,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830358934] [2024-06-21 15:44:02,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:44:02,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:44:02,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:44:03,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:44:03,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:44:03,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830358934] [2024-06-21 15:44:03,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830358934] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:44:03,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:44:03,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:44:03,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784328652] [2024-06-21 15:44:03,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:44:03,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:44:03,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:44:03,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:44:03,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:44:03,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:44:03,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 165 transitions, 1756 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 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) [2024-06-21 15:44:03,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:44:03,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:44:03,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:44:04,149 INFO L124 PetriNetUnfolderBase]: 440/777 cut-off events. [2024-06-21 15:44:04,149 INFO L125 PetriNetUnfolderBase]: For 36361/36361 co-relation queries the response was YES. [2024-06-21 15:44:04,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5309 conditions, 777 events. 440/777 cut-off events. For 36361/36361 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3480 event pairs, 63 based on Foata normal form. 3/778 useless extension candidates. Maximal degree in co-relation 5217. Up to 642 conditions per place. [2024-06-21 15:44:04,154 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 145 selfloop transitions, 39 changer transitions 0/186 dead transitions. [2024-06-21 15:44:04,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 186 transitions, 2241 flow [2024-06-21 15:44:04,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:44:04,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:44:04,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-21 15:44:04,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-21 15:44:04,155 INFO L175 Difference]: Start difference. First operand has 181 places, 165 transitions, 1756 flow. Second operand 11 states and 122 transitions. [2024-06-21 15:44:04,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 186 transitions, 2241 flow [2024-06-21 15:44:04,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 186 transitions, 2140 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-21 15:44:04,251 INFO L231 Difference]: Finished difference. Result has 187 places, 169 transitions, 1824 flow [2024-06-21 15:44:04,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1655, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1824, PETRI_PLACES=187, PETRI_TRANSITIONS=169} [2024-06-21 15:44:04,252 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 157 predicate places. [2024-06-21 15:44:04,252 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 169 transitions, 1824 flow [2024-06-21 15:44:04,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 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) [2024-06-21 15:44:04,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:44:04,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:44:04,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-21 15:44:04,253 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)] === [2024-06-21 15:44:04,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:44:04,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1622832986, now seen corresponding path program 2 times [2024-06-21 15:44:04,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:44:04,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072667655] [2024-06-21 15:44:04,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:44:04,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:44:04,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:44:05,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:44:05,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:44:05,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072667655] [2024-06-21 15:44:05,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072667655] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:44:05,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:44:05,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:44:05,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877537966] [2024-06-21 15:44:05,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:44:05,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:44:05,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:44:05,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:44:05,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:44:05,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:44:05,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 169 transitions, 1824 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 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) [2024-06-21 15:44:05,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:44:05,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:44:05,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:44:05,770 INFO L124 PetriNetUnfolderBase]: 449/792 cut-off events. [2024-06-21 15:44:05,770 INFO L125 PetriNetUnfolderBase]: For 37475/37475 co-relation queries the response was YES. [2024-06-21 15:44:05,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5488 conditions, 792 events. 449/792 cut-off events. For 37475/37475 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3573 event pairs, 59 based on Foata normal form. 3/793 useless extension candidates. Maximal degree in co-relation 5393. Up to 615 conditions per place. [2024-06-21 15:44:05,776 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 132 selfloop transitions, 53 changer transitions 0/187 dead transitions. [2024-06-21 15:44:05,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 187 transitions, 2302 flow [2024-06-21 15:44:05,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:44:05,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:44:05,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-21 15:44:05,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-21 15:44:05,777 INFO L175 Difference]: Start difference. First operand has 187 places, 169 transitions, 1824 flow. Second operand 10 states and 111 transitions. [2024-06-21 15:44:05,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 187 transitions, 2302 flow [2024-06-21 15:44:05,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 187 transitions, 2177 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-21 15:44:05,877 INFO L231 Difference]: Finished difference. Result has 191 places, 172 transitions, 1887 flow [2024-06-21 15:44:05,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1699, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1887, PETRI_PLACES=191, PETRI_TRANSITIONS=172} [2024-06-21 15:44:05,877 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 161 predicate places. [2024-06-21 15:44:05,877 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 172 transitions, 1887 flow [2024-06-21 15:44:05,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 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) [2024-06-21 15:44:05,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:44:05,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:44:05,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-21 15:44:05,878 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)] === [2024-06-21 15:44:05,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:44:05,879 INFO L85 PathProgramCache]: Analyzing trace with hash -683403271, now seen corresponding path program 6 times [2024-06-21 15:44:05,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:44:05,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093562260] [2024-06-21 15:44:05,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:44:05,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:44:05,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:44:06,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:44:06,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:44:06,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093562260] [2024-06-21 15:44:06,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093562260] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:44:06,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:44:06,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 15:44:06,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555548383] [2024-06-21 15:44:06,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:44:06,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 15:44:06,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:44:06,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 15:44:06,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 15:44:06,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:44:06,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 172 transitions, 1887 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:44:06,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:44:06,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:44:06,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:44:07,212 INFO L124 PetriNetUnfolderBase]: 465/818 cut-off events. [2024-06-21 15:44:07,212 INFO L125 PetriNetUnfolderBase]: For 40665/40665 co-relation queries the response was YES. [2024-06-21 15:44:07,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5874 conditions, 818 events. 465/818 cut-off events. For 40665/40665 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3726 event pairs, 47 based on Foata normal form. 2/818 useless extension candidates. Maximal degree in co-relation 5778. Up to 522 conditions per place. [2024-06-21 15:44:07,219 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 114 selfloop transitions, 75 changer transitions 0/191 dead transitions. [2024-06-21 15:44:07,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 191 transitions, 2509 flow [2024-06-21 15:44:07,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:44:07,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:44:07,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-21 15:44:07,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-21 15:44:07,220 INFO L175 Difference]: Start difference. First operand has 191 places, 172 transitions, 1887 flow. Second operand 9 states and 102 transitions. [2024-06-21 15:44:07,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 191 transitions, 2509 flow [2024-06-21 15:44:07,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 191 transitions, 2343 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-06-21 15:44:07,334 INFO L231 Difference]: Finished difference. Result has 192 places, 176 transitions, 1986 flow [2024-06-21 15:44:07,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1727, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1986, PETRI_PLACES=192, PETRI_TRANSITIONS=176} [2024-06-21 15:44:07,334 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 162 predicate places. [2024-06-21 15:44:07,335 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 176 transitions, 1986 flow [2024-06-21 15:44:07,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:44:07,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:44:07,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:44:07,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-21 15:44:07,335 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)] === [2024-06-21 15:44:07,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:44:07,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1786439533, now seen corresponding path program 7 times [2024-06-21 15:44:07,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:44:07,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675149064] [2024-06-21 15:44:07,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:44:07,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:44:07,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:44:08,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:44:08,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:44:08,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675149064] [2024-06-21 15:44:08,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675149064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:44:08,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:44:08,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 15:44:08,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737992489] [2024-06-21 15:44:08,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:44:08,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 15:44:08,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:44:08,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 15:44:08,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 15:44:08,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:44:08,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 176 transitions, 1986 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:44:08,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:44:08,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:44:08,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:44:08,569 INFO L124 PetriNetUnfolderBase]: 471/828 cut-off events. [2024-06-21 15:44:08,570 INFO L125 PetriNetUnfolderBase]: For 41083/41083 co-relation queries the response was YES. [2024-06-21 15:44:08,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5977 conditions, 828 events. 471/828 cut-off events. For 41083/41083 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3784 event pairs, 71 based on Foata normal form. 2/826 useless extension candidates. Maximal degree in co-relation 5880. Up to 663 conditions per place. [2024-06-21 15:44:08,575 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 148 selfloop transitions, 41 changer transitions 0/191 dead transitions. [2024-06-21 15:44:08,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 191 transitions, 2454 flow [2024-06-21 15:44:08,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:44:08,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:44:08,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-21 15:44:08,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-21 15:44:08,576 INFO L175 Difference]: Start difference. First operand has 192 places, 176 transitions, 1986 flow. Second operand 10 states and 109 transitions. [2024-06-21 15:44:08,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 191 transitions, 2454 flow [2024-06-21 15:44:08,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 191 transitions, 2323 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-21 15:44:08,690 INFO L231 Difference]: Finished difference. Result has 197 places, 178 transitions, 1998 flow [2024-06-21 15:44:08,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1861, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1998, PETRI_PLACES=197, PETRI_TRANSITIONS=178} [2024-06-21 15:44:08,691 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 167 predicate places. [2024-06-21 15:44:08,691 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 178 transitions, 1998 flow [2024-06-21 15:44:08,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:44:08,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:44:08,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:44:08,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-21 15:44:08,691 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)] === [2024-06-21 15:44:08,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:44:08,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1786237723, now seen corresponding path program 8 times [2024-06-21 15:44:08,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:44:08,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791986557] [2024-06-21 15:44:08,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:44:08,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:44:08,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:44:09,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:44:09,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:44:09,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791986557] [2024-06-21 15:44:09,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791986557] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:44:09,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:44:09,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 15:44:09,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122514767] [2024-06-21 15:44:09,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:44:09,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 15:44:09,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:44:09,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 15:44:09,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 15:44:09,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:44:09,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 178 transitions, 1998 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:44:09,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:44:09,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:44:09,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:44:09,798 INFO L124 PetriNetUnfolderBase]: 472/830 cut-off events. [2024-06-21 15:44:09,798 INFO L125 PetriNetUnfolderBase]: For 40678/40678 co-relation queries the response was YES. [2024-06-21 15:44:09,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5955 conditions, 830 events. 472/830 cut-off events. For 40678/40678 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3793 event pairs, 53 based on Foata normal form. 2/830 useless extension candidates. Maximal degree in co-relation 5856. Up to 658 conditions per place. [2024-06-21 15:44:09,804 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 145 selfloop transitions, 47 changer transitions 0/194 dead transitions. [2024-06-21 15:44:09,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 194 transitions, 2472 flow [2024-06-21 15:44:09,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:44:09,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:44:09,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-21 15:44:09,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-21 15:44:09,805 INFO L175 Difference]: Start difference. First operand has 197 places, 178 transitions, 1998 flow. Second operand 9 states and 99 transitions. [2024-06-21 15:44:09,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 194 transitions, 2472 flow [2024-06-21 15:44:09,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 194 transitions, 2332 flow, removed 30 selfloop flow, removed 11 redundant places. [2024-06-21 15:44:09,920 INFO L231 Difference]: Finished difference. Result has 195 places, 180 transitions, 2014 flow [2024-06-21 15:44:09,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1858, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2014, PETRI_PLACES=195, PETRI_TRANSITIONS=180} [2024-06-21 15:44:09,920 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 165 predicate places. [2024-06-21 15:44:09,920 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 180 transitions, 2014 flow [2024-06-21 15:44:09,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:44:09,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:44:09,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:44:09,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-21 15:44:09,921 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)] === [2024-06-21 15:44:09,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:44:09,922 INFO L85 PathProgramCache]: Analyzing trace with hash 969522738, now seen corresponding path program 3 times [2024-06-21 15:44:09,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:44:09,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749856427] [2024-06-21 15:44:09,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:44:09,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:44:09,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:44:11,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:44:11,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:44:11,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749856427] [2024-06-21 15:44:11,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749856427] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:44:11,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:44:11,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:44:11,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224144648] [2024-06-21 15:44:11,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:44:11,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:44:11,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:44:11,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:44:11,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:44:11,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:44:11,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 180 transitions, 2014 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 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) [2024-06-21 15:44:11,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:44:11,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:44:11,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:44:11,451 INFO L124 PetriNetUnfolderBase]: 475/835 cut-off events. [2024-06-21 15:44:11,451 INFO L125 PetriNetUnfolderBase]: For 40626/40626 co-relation queries the response was YES. [2024-06-21 15:44:11,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5954 conditions, 835 events. 475/835 cut-off events. For 40626/40626 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3808 event pairs, 81 based on Foata normal form. 1/832 useless extension candidates. Maximal degree in co-relation 5860. Up to 730 conditions per place. [2024-06-21 15:44:11,457 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 157 selfloop transitions, 32 changer transitions 0/191 dead transitions. [2024-06-21 15:44:11,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 191 transitions, 2450 flow [2024-06-21 15:44:11,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:44:11,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:44:11,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-21 15:44:11,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32903225806451614 [2024-06-21 15:44:11,458 INFO L175 Difference]: Start difference. First operand has 195 places, 180 transitions, 2014 flow. Second operand 10 states and 102 transitions. [2024-06-21 15:44:11,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 191 transitions, 2450 flow [2024-06-21 15:44:11,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 191 transitions, 2326 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-21 15:44:11,590 INFO L231 Difference]: Finished difference. Result has 198 places, 182 transitions, 2001 flow [2024-06-21 15:44:11,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1890, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2001, PETRI_PLACES=198, PETRI_TRANSITIONS=182} [2024-06-21 15:44:11,591 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 168 predicate places. [2024-06-21 15:44:11,591 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 182 transitions, 2001 flow [2024-06-21 15:44:11,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 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) [2024-06-21 15:44:11,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:44:11,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:44:11,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-21 15:44:11,591 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)] === [2024-06-21 15:44:11,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:44:11,592 INFO L85 PathProgramCache]: Analyzing trace with hash 496870619, now seen corresponding path program 9 times [2024-06-21 15:44:11,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:44:11,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112874651] [2024-06-21 15:44:11,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:44:11,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:44:11,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:44:12,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:44:12,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:44:12,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112874651] [2024-06-21 15:44:12,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112874651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:44:12,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:44:12,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 15:44:12,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915142389] [2024-06-21 15:44:12,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:44:12,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 15:44:12,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:44:12,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 15:44:12,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 15:44:12,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:44:12,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 182 transitions, 2001 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:44:12,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:44:12,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:44:12,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:44:13,435 INFO L124 PetriNetUnfolderBase]: 529/923 cut-off events. [2024-06-21 15:44:13,435 INFO L125 PetriNetUnfolderBase]: For 58406/58406 co-relation queries the response was YES. [2024-06-21 15:44:13,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6986 conditions, 923 events. 529/923 cut-off events. For 58406/58406 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4300 event pairs, 91 based on Foata normal form. 4/923 useless extension candidates. Maximal degree in co-relation 6891. Up to 367 conditions per place. [2024-06-21 15:44:13,442 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 130 selfloop transitions, 79 changer transitions 0/211 dead transitions. [2024-06-21 15:44:13,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 211 transitions, 3059 flow [2024-06-21 15:44:13,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:44:13,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:44:13,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-21 15:44:13,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4014336917562724 [2024-06-21 15:44:13,443 INFO L175 Difference]: Start difference. First operand has 198 places, 182 transitions, 2001 flow. Second operand 9 states and 112 transitions. [2024-06-21 15:44:13,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 211 transitions, 3059 flow [2024-06-21 15:44:13,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 211 transitions, 2964 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-21 15:44:13,571 INFO L231 Difference]: Finished difference. Result has 201 places, 192 transitions, 2312 flow [2024-06-21 15:44:13,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1906, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2312, PETRI_PLACES=201, PETRI_TRANSITIONS=192} [2024-06-21 15:44:13,571 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 171 predicate places. [2024-06-21 15:44:13,571 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 192 transitions, 2312 flow [2024-06-21 15:44:13,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:44:13,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:44:13,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:44:13,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-21 15:44:13,571 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)] === [2024-06-21 15:44:13,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:44:13,572 INFO L85 PathProgramCache]: Analyzing trace with hash -555476204, now seen corresponding path program 4 times [2024-06-21 15:44:13,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:44:13,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330463889] [2024-06-21 15:44:13,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:44:13,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:44:13,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:44:14,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:44:14,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:44:14,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330463889] [2024-06-21 15:44:14,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330463889] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:44:14,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:44:14,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:44:14,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656304748] [2024-06-21 15:44:14,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:44:14,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:44:14,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:44:14,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:44:14,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:44:14,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:44:14,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 192 transitions, 2312 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 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) [2024-06-21 15:44:14,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:44:14,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:44:14,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:44:14,906 INFO L124 PetriNetUnfolderBase]: 525/916 cut-off events. [2024-06-21 15:44:14,907 INFO L125 PetriNetUnfolderBase]: For 55065/55065 co-relation queries the response was YES. [2024-06-21 15:44:14,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7133 conditions, 916 events. 525/916 cut-off events. For 55065/55065 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4237 event pairs, 81 based on Foata normal form. 1/913 useless extension candidates. Maximal degree in co-relation 7035. Up to 784 conditions per place. [2024-06-21 15:44:14,917 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 158 selfloop transitions, 43 changer transitions 0/203 dead transitions. [2024-06-21 15:44:14,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 203 transitions, 2751 flow [2024-06-21 15:44:14,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:44:14,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:44:14,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-21 15:44:14,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-21 15:44:14,919 INFO L175 Difference]: Start difference. First operand has 201 places, 192 transitions, 2312 flow. Second operand 10 states and 105 transitions. [2024-06-21 15:44:14,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 203 transitions, 2751 flow [2024-06-21 15:44:15,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 203 transitions, 2694 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-21 15:44:15,095 INFO L231 Difference]: Finished difference. Result has 208 places, 193 transitions, 2361 flow [2024-06-21 15:44:15,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2255, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2361, PETRI_PLACES=208, PETRI_TRANSITIONS=193} [2024-06-21 15:44:15,096 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 178 predicate places. [2024-06-21 15:44:15,096 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 193 transitions, 2361 flow [2024-06-21 15:44:15,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 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) [2024-06-21 15:44:15,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:44:15,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:44:15,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-21 15:44:15,096 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)] === [2024-06-21 15:44:15,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:44:15,097 INFO L85 PathProgramCache]: Analyzing trace with hash 496863179, now seen corresponding path program 10 times [2024-06-21 15:44:15,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:44:15,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010366666] [2024-06-21 15:44:15,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:44:15,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:44:15,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:44:15,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:44:15,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:44:15,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010366666] [2024-06-21 15:44:15,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010366666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:44:15,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:44:15,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 15:44:15,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949930326] [2024-06-21 15:44:15,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:44:15,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 15:44:15,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:44:15,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 15:44:15,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 15:44:15,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:44:15,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 193 transitions, 2361 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:44:15,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:44:15,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:44:15,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:44:16,415 INFO L124 PetriNetUnfolderBase]: 531/926 cut-off events. [2024-06-21 15:44:16,415 INFO L125 PetriNetUnfolderBase]: For 59077/59077 co-relation queries the response was YES. [2024-06-21 15:44:16,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7281 conditions, 926 events. 531/926 cut-off events. For 59077/59077 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4328 event pairs, 87 based on Foata normal form. 2/924 useless extension candidates. Maximal degree in co-relation 7181. Up to 381 conditions per place. [2024-06-21 15:44:16,422 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 129 selfloop transitions, 85 changer transitions 0/216 dead transitions. [2024-06-21 15:44:16,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 216 transitions, 3328 flow [2024-06-21 15:44:16,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:44:16,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:44:16,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-21 15:44:16,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-21 15:44:16,424 INFO L175 Difference]: Start difference. First operand has 208 places, 193 transitions, 2361 flow. Second operand 9 states and 111 transitions. [2024-06-21 15:44:16,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 216 transitions, 3328 flow [2024-06-21 15:44:16,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 216 transitions, 3209 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-21 15:44:16,574 INFO L231 Difference]: Finished difference. Result has 209 places, 200 transitions, 2580 flow [2024-06-21 15:44:16,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2242, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2580, PETRI_PLACES=209, PETRI_TRANSITIONS=200} [2024-06-21 15:44:16,575 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 179 predicate places. [2024-06-21 15:44:16,575 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 200 transitions, 2580 flow [2024-06-21 15:44:16,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:44:16,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:44:16,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:44:16,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-21 15:44:16,576 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)] === [2024-06-21 15:44:16,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:44:16,576 INFO L85 PathProgramCache]: Analyzing trace with hash -289779203, now seen corresponding path program 11 times [2024-06-21 15:44:16,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:44:16,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389870686] [2024-06-21 15:44:16,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:44:16,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:44:16,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:44:17,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:44:17,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:44:17,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389870686] [2024-06-21 15:44:17,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389870686] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:44:17,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:44:17,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 15:44:17,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070906654] [2024-06-21 15:44:17,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:44:17,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 15:44:17,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:44:17,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 15:44:17,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 15:44:17,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:44:17,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 200 transitions, 2580 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:44:17,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:44:17,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:44:17,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:44:17,956 INFO L124 PetriNetUnfolderBase]: 533/929 cut-off events. [2024-06-21 15:44:17,956 INFO L125 PetriNetUnfolderBase]: For 60162/60162 co-relation queries the response was YES. [2024-06-21 15:44:17,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7340 conditions, 929 events. 533/929 cut-off events. For 60162/60162 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4318 event pairs, 164 based on Foata normal form. 4/932 useless extension candidates. Maximal degree in co-relation 7239. Up to 868 conditions per place. [2024-06-21 15:44:17,963 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 190 selfloop transitions, 22 changer transitions 0/214 dead transitions. [2024-06-21 15:44:17,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 214 transitions, 3203 flow [2024-06-21 15:44:17,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:44:17,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:44:17,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-21 15:44:17,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-21 15:44:17,964 INFO L175 Difference]: Start difference. First operand has 209 places, 200 transitions, 2580 flow. Second operand 9 states and 96 transitions. [2024-06-21 15:44:17,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 214 transitions, 3203 flow [2024-06-21 15:44:18,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 214 transitions, 3033 flow, removed 63 selfloop flow, removed 4 redundant places. [2024-06-21 15:44:18,113 INFO L231 Difference]: Finished difference. Result has 215 places, 202 transitions, 2521 flow [2024-06-21 15:44:18,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2410, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2521, PETRI_PLACES=215, PETRI_TRANSITIONS=202} [2024-06-21 15:44:18,114 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 185 predicate places. [2024-06-21 15:44:18,114 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 202 transitions, 2521 flow [2024-06-21 15:44:18,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:44:18,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:44:18,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:44:18,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-21 15:44:18,115 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)] === [2024-06-21 15:44:18,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:44:18,115 INFO L85 PathProgramCache]: Analyzing trace with hash -555691685, now seen corresponding path program 7 times [2024-06-21 15:44:18,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:44:18,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408001245] [2024-06-21 15:44:18,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:44:18,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:44:18,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:44:18,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:44:18,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:44:18,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408001245] [2024-06-21 15:44:18,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408001245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:44:18,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:44:18,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 15:44:18,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622985399] [2024-06-21 15:44:18,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:44:18,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 15:44:18,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:44:18,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 15:44:18,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 15:44:18,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:44:18,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 202 transitions, 2521 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:44:18,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:44:18,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:44:18,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:44:19,075 INFO L124 PetriNetUnfolderBase]: 530/925 cut-off events. [2024-06-21 15:44:19,075 INFO L125 PetriNetUnfolderBase]: For 55161/55161 co-relation queries the response was YES. [2024-06-21 15:44:19,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7052 conditions, 925 events. 530/925 cut-off events. For 55161/55161 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4332 event pairs, 68 based on Foata normal form. 2/923 useless extension candidates. Maximal degree in co-relation 6949. Up to 761 conditions per place. [2024-06-21 15:44:19,083 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 172 selfloop transitions, 38 changer transitions 0/212 dead transitions. [2024-06-21 15:44:19,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 212 transitions, 2967 flow [2024-06-21 15:44:19,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 15:44:19,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 15:44:19,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-21 15:44:19,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35080645161290325 [2024-06-21 15:44:19,084 INFO L175 Difference]: Start difference. First operand has 215 places, 202 transitions, 2521 flow. Second operand 8 states and 87 transitions. [2024-06-21 15:44:19,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 212 transitions, 2967 flow [2024-06-21 15:44:19,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 212 transitions, 2893 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-21 15:44:19,246 INFO L231 Difference]: Finished difference. Result has 216 places, 202 transitions, 2527 flow [2024-06-21 15:44:19,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2447, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2527, PETRI_PLACES=216, PETRI_TRANSITIONS=202} [2024-06-21 15:44:19,247 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 186 predicate places. [2024-06-21 15:44:19,247 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 202 transitions, 2527 flow [2024-06-21 15:44:19,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:44:19,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:44:19,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:44:19,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-21 15:44:19,248 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)] === [2024-06-21 15:44:19,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:44:19,248 INFO L85 PathProgramCache]: Analyzing trace with hash -289778924, now seen corresponding path program 5 times [2024-06-21 15:44:19,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:44:19,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173125611] [2024-06-21 15:44:19,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:44:19,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:44:19,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:44:20,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:44:20,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:44:20,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173125611] [2024-06-21 15:44:20,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173125611] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:44:20,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:44:20,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:44:20,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828985743] [2024-06-21 15:44:20,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:44:20,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:44:20,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:44:20,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:44:20,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:44:20,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:44:20,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 202 transitions, 2527 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 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) [2024-06-21 15:44:20,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:44:20,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:44:20,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:44:20,554 INFO L124 PetriNetUnfolderBase]: 528/921 cut-off events. [2024-06-21 15:44:20,554 INFO L125 PetriNetUnfolderBase]: For 53060/53060 co-relation queries the response was YES. [2024-06-21 15:44:20,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7001 conditions, 921 events. 528/921 cut-off events. For 53060/53060 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4273 event pairs, 167 based on Foata normal form. 1/921 useless extension candidates. Maximal degree in co-relation 6897. Up to 887 conditions per place. [2024-06-21 15:44:20,562 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 190 selfloop transitions, 19 changer transitions 0/211 dead transitions. [2024-06-21 15:44:20,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 211 transitions, 2972 flow [2024-06-21 15:44:20,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:44:20,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:44:20,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2024-06-21 15:44:20,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-21 15:44:20,563 INFO L175 Difference]: Start difference. First operand has 216 places, 202 transitions, 2527 flow. Second operand 9 states and 90 transitions. [2024-06-21 15:44:20,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 211 transitions, 2972 flow [2024-06-21 15:44:20,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 211 transitions, 2821 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-21 15:44:20,727 INFO L231 Difference]: Finished difference. Result has 218 places, 202 transitions, 2423 flow [2024-06-21 15:44:20,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2376, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2423, PETRI_PLACES=218, PETRI_TRANSITIONS=202} [2024-06-21 15:44:20,727 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 188 predicate places. [2024-06-21 15:44:20,727 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 202 transitions, 2423 flow [2024-06-21 15:44:20,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 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) [2024-06-21 15:44:20,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:44:20,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:44:20,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-21 15:44:20,728 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)] === [2024-06-21 15:44:20,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:44:20,728 INFO L85 PathProgramCache]: Analyzing trace with hash 753363689, now seen corresponding path program 12 times [2024-06-21 15:44:20,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:44:20,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85212016] [2024-06-21 15:44:20,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:44:20,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:44:20,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:44:21,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:44:21,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:44:21,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85212016] [2024-06-21 15:44:21,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85212016] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:44:21,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:44:21,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 15:44:21,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595972743] [2024-06-21 15:44:21,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:44:21,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 15:44:21,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:44:21,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 15:44:21,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 15:44:21,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:44:21,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 202 transitions, 2423 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:44:21,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:44:21,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:44:21,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:44:21,688 INFO L124 PetriNetUnfolderBase]: 555/965 cut-off events. [2024-06-21 15:44:21,689 INFO L125 PetriNetUnfolderBase]: For 65875/65875 co-relation queries the response was YES. [2024-06-21 15:44:21,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7465 conditions, 965 events. 555/965 cut-off events. For 65875/65875 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4523 event pairs, 167 based on Foata normal form. 4/968 useless extension candidates. Maximal degree in co-relation 7360. Up to 849 conditions per place. [2024-06-21 15:44:21,697 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 189 selfloop transitions, 30 changer transitions 0/221 dead transitions. [2024-06-21 15:44:21,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 221 transitions, 3170 flow [2024-06-21 15:44:21,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:44:21,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:44:21,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-21 15:44:21,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36200716845878134 [2024-06-21 15:44:21,698 INFO L175 Difference]: Start difference. First operand has 218 places, 202 transitions, 2423 flow. Second operand 9 states and 101 transitions. [2024-06-21 15:44:21,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 221 transitions, 3170 flow [2024-06-21 15:44:21,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 221 transitions, 3091 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-21 15:44:21,849 INFO L231 Difference]: Finished difference. Result has 217 places, 206 transitions, 2519 flow [2024-06-21 15:44:21,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2350, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2519, PETRI_PLACES=217, PETRI_TRANSITIONS=206} [2024-06-21 15:44:21,850 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 187 predicate places. [2024-06-21 15:44:21,850 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 206 transitions, 2519 flow [2024-06-21 15:44:21,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:44:21,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:44:21,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:44:21,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-21 15:44:21,851 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)] === [2024-06-21 15:44:21,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:44:21,851 INFO L85 PathProgramCache]: Analyzing trace with hash -298975694, now seen corresponding path program 6 times [2024-06-21 15:44:21,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:44:21,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319092899] [2024-06-21 15:44:21,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:44:21,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:44:21,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:44:23,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:44:23,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:44:23,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319092899] [2024-06-21 15:44:23,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319092899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:44:23,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:44:23,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:44:23,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607401708] [2024-06-21 15:44:23,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:44:23,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:44:23,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:44:23,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:44:23,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:44:23,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:44:23,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 206 transitions, 2519 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 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) [2024-06-21 15:44:23,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:44:23,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:44:23,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:44:23,748 INFO L124 PetriNetUnfolderBase]: 563/979 cut-off events. [2024-06-21 15:44:23,748 INFO L125 PetriNetUnfolderBase]: For 63254/63254 co-relation queries the response was YES. [2024-06-21 15:44:23,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7661 conditions, 979 events. 563/979 cut-off events. For 63254/63254 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4629 event pairs, 83 based on Foata normal form. 1/976 useless extension candidates. Maximal degree in co-relation 7557. Up to 733 conditions per place. [2024-06-21 15:44:23,758 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 143 selfloop transitions, 75 changer transitions 0/220 dead transitions. [2024-06-21 15:44:23,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 220 transitions, 3179 flow [2024-06-21 15:44:23,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:44:23,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:44:23,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-21 15:44:23,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-21 15:44:23,760 INFO L175 Difference]: Start difference. First operand has 217 places, 206 transitions, 2519 flow. Second operand 9 states and 106 transitions. [2024-06-21 15:44:23,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 220 transitions, 3179 flow [2024-06-21 15:44:23,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 220 transitions, 3096 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-21 15:44:23,945 INFO L231 Difference]: Finished difference. Result has 222 places, 208 transitions, 2688 flow [2024-06-21 15:44:23,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2440, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2688, PETRI_PLACES=222, PETRI_TRANSITIONS=208} [2024-06-21 15:44:23,946 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 192 predicate places. [2024-06-21 15:44:23,946 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 208 transitions, 2688 flow [2024-06-21 15:44:23,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 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) [2024-06-21 15:44:23,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:44:23,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:44:23,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-21 15:44:23,947 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)] === [2024-06-21 15:44:23,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:44:23,947 INFO L85 PathProgramCache]: Analyzing trace with hash 496661369, now seen corresponding path program 13 times [2024-06-21 15:44:23,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:44:23,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081286130] [2024-06-21 15:44:23,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:44:23,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:44:23,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:44:25,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:44:25,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:44:25,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081286130] [2024-06-21 15:44:25,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081286130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:44:25,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:44:25,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 15:44:25,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657541299] [2024-06-21 15:44:25,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:44:25,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 15:44:25,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:44:25,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 15:44:25,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 15:44:25,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:44:25,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 208 transitions, 2688 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:44:25,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:44:25,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:44:25,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:44:25,803 INFO L124 PetriNetUnfolderBase]: 559/973 cut-off events. [2024-06-21 15:44:25,803 INFO L125 PetriNetUnfolderBase]: For 62828/62828 co-relation queries the response was YES. [2024-06-21 15:44:25,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7687 conditions, 973 events. 559/973 cut-off events. For 62828/62828 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4588 event pairs, 96 based on Foata normal form. 2/971 useless extension candidates. Maximal degree in co-relation 7580. Up to 437 conditions per place. [2024-06-21 15:44:25,812 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 128 selfloop transitions, 91 changer transitions 0/221 dead transitions. [2024-06-21 15:44:25,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 221 transitions, 3284 flow [2024-06-21 15:44:25,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:44:25,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:44:25,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-21 15:44:25,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835125448028674 [2024-06-21 15:44:25,813 INFO L175 Difference]: Start difference. First operand has 222 places, 208 transitions, 2688 flow. Second operand 9 states and 107 transitions. [2024-06-21 15:44:25,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 221 transitions, 3284 flow [2024-06-21 15:44:25,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 221 transitions, 3122 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-21 15:44:26,000 INFO L231 Difference]: Finished difference. Result has 223 places, 208 transitions, 2715 flow [2024-06-21 15:44:26,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2528, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2715, PETRI_PLACES=223, PETRI_TRANSITIONS=208} [2024-06-21 15:44:26,001 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 193 predicate places. [2024-06-21 15:44:26,001 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 208 transitions, 2715 flow [2024-06-21 15:44:26,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:44:26,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:44:26,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:44:26,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-21 15:44:26,001 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)] === [2024-06-21 15:44:26,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:44:26,002 INFO L85 PathProgramCache]: Analyzing trace with hash -298975973, now seen corresponding path program 14 times [2024-06-21 15:44:26,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:44:26,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82845845] [2024-06-21 15:44:26,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:44:26,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:44:26,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:44:26,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:44:26,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:44:26,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82845845] [2024-06-21 15:44:26,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82845845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:44:26,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:44:26,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 15:44:26,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200748848] [2024-06-21 15:44:26,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:44:26,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 15:44:26,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:44:26,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 15:44:26,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 15:44:26,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:44:26,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 208 transitions, 2715 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:44:26,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:44:26,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:44:26,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:44:27,000 INFO L124 PetriNetUnfolderBase]: 555/966 cut-off events. [2024-06-21 15:44:27,000 INFO L125 PetriNetUnfolderBase]: For 59498/59498 co-relation queries the response was YES. [2024-06-21 15:44:27,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7549 conditions, 966 events. 555/966 cut-off events. For 59498/59498 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4539 event pairs, 165 based on Foata normal form. 2/967 useless extension candidates. Maximal degree in co-relation 7443. Up to 857 conditions per place. [2024-06-21 15:44:27,008 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 190 selfloop transitions, 34 changer transitions 0/226 dead transitions. [2024-06-21 15:44:27,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 226 transitions, 3431 flow [2024-06-21 15:44:27,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:44:27,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:44:27,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-21 15:44:27,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36200716845878134 [2024-06-21 15:44:27,009 INFO L175 Difference]: Start difference. First operand has 223 places, 208 transitions, 2715 flow. Second operand 9 states and 101 transitions. [2024-06-21 15:44:27,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 226 transitions, 3431 flow [2024-06-21 15:44:27,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 226 transitions, 3238 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-21 15:44:27,169 INFO L231 Difference]: Finished difference. Result has 224 places, 212 transitions, 2698 flow [2024-06-21 15:44:27,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2526, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2698, PETRI_PLACES=224, PETRI_TRANSITIONS=212} [2024-06-21 15:44:27,169 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 194 predicate places. [2024-06-21 15:44:27,169 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 212 transitions, 2698 flow [2024-06-21 15:44:27,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:44:27,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:44:27,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:44:27,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-21 15:44:27,170 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)] === [2024-06-21 15:44:27,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:44:27,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1607432188, now seen corresponding path program 1 times [2024-06-21 15:44:27,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:44:27,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134740715] [2024-06-21 15:44:27,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:44:27,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:44:27,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:44:28,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:44:28,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:44:28,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134740715] [2024-06-21 15:44:28,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134740715] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:44:28,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:44:28,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 15:44:28,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675934480] [2024-06-21 15:44:28,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:44:28,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 15:44:28,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:44:28,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 15:44:28,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 15:44:28,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:44:28,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 212 transitions, 2698 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:44:28,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:44:28,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:44:28,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:44:28,394 INFO L124 PetriNetUnfolderBase]: 590/1036 cut-off events. [2024-06-21 15:44:28,394 INFO L125 PetriNetUnfolderBase]: For 62145/62145 co-relation queries the response was YES. [2024-06-21 15:44:28,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7729 conditions, 1036 events. 590/1036 cut-off events. For 62145/62145 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5052 event pairs, 95 based on Foata normal form. 2/1037 useless extension candidates. Maximal degree in co-relation 7622. Up to 890 conditions per place. [2024-06-21 15:44:28,403 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 212 selfloop transitions, 27 changer transitions 0/241 dead transitions. [2024-06-21 15:44:28,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 241 transitions, 3339 flow [2024-06-21 15:44:28,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:44:28,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:44:28,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-21 15:44:28,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36917562724014336 [2024-06-21 15:44:28,404 INFO L175 Difference]: Start difference. First operand has 224 places, 212 transitions, 2698 flow. Second operand 9 states and 103 transitions. [2024-06-21 15:44:28,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 241 transitions, 3339 flow [2024-06-21 15:44:28,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 241 transitions, 3240 flow, removed 39 selfloop flow, removed 4 redundant places. [2024-06-21 15:44:28,601 INFO L231 Difference]: Finished difference. Result has 233 places, 223 transitions, 2804 flow [2024-06-21 15:44:28,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2599, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2804, PETRI_PLACES=233, PETRI_TRANSITIONS=223} [2024-06-21 15:44:28,601 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 203 predicate places. [2024-06-21 15:44:28,601 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 223 transitions, 2804 flow [2024-06-21 15:44:28,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:44:28,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:44:28,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:44:28,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-21 15:44:28,602 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)] === [2024-06-21 15:44:28,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:44:28,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1561827304, now seen corresponding path program 2 times [2024-06-21 15:44:28,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:44:28,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539574993] [2024-06-21 15:44:28,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:44:28,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:44:28,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:44:29,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:44:29,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:44:29,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539574993] [2024-06-21 15:44:29,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539574993] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:44:29,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:44:29,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:44:29,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866830152] [2024-06-21 15:44:29,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:44:29,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:44:29,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:44:29,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:44:29,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:44:29,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:44:29,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 223 transitions, 2804 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:44:29,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:44:29,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:44:29,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:44:30,000 INFO L124 PetriNetUnfolderBase]: 598/1052 cut-off events. [2024-06-21 15:44:30,000 INFO L125 PetriNetUnfolderBase]: For 63237/63237 co-relation queries the response was YES. [2024-06-21 15:44:30,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7850 conditions, 1052 events. 598/1052 cut-off events. For 63237/63237 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 5177 event pairs, 102 based on Foata normal form. 2/1053 useless extension candidates. Maximal degree in co-relation 7738. Up to 930 conditions per place. [2024-06-21 15:44:30,009 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 209 selfloop transitions, 30 changer transitions 0/241 dead transitions. [2024-06-21 15:44:30,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 241 transitions, 3347 flow [2024-06-21 15:44:30,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:44:30,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:44:30,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-21 15:44:30,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-21 15:44:30,010 INFO L175 Difference]: Start difference. First operand has 233 places, 223 transitions, 2804 flow. Second operand 10 states and 108 transitions. [2024-06-21 15:44:30,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 241 transitions, 3347 flow [2024-06-21 15:44:30,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 241 transitions, 3305 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-06-21 15:44:30,205 INFO L231 Difference]: Finished difference. Result has 243 places, 226 transitions, 2873 flow [2024-06-21 15:44:30,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2762, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2873, PETRI_PLACES=243, PETRI_TRANSITIONS=226} [2024-06-21 15:44:30,206 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 213 predicate places. [2024-06-21 15:44:30,206 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 226 transitions, 2873 flow [2024-06-21 15:44:30,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:44:30,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:44:30,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:44:30,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-21 15:44:30,206 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)] === [2024-06-21 15:44:30,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:44:30,207 INFO L85 PathProgramCache]: Analyzing trace with hash 784492030, now seen corresponding path program 3 times [2024-06-21 15:44:30,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:44:30,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156518394] [2024-06-21 15:44:30,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:44:30,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:44:30,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:44:31,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:44:31,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:44:31,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156518394] [2024-06-21 15:44:31,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156518394] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:44:31,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:44:31,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:44:31,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366078660] [2024-06-21 15:44:31,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:44:31,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:44:31,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:44:31,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:44:31,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:44:31,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:44:31,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 226 transitions, 2873 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:44:31,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:44:31,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:44:31,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:44:31,610 INFO L124 PetriNetUnfolderBase]: 608/1070 cut-off events. [2024-06-21 15:44:31,610 INFO L125 PetriNetUnfolderBase]: For 66020/66020 co-relation queries the response was YES. [2024-06-21 15:44:31,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8021 conditions, 1070 events. 608/1070 cut-off events. For 66020/66020 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 5272 event pairs, 102 based on Foata normal form. 2/1071 useless extension candidates. Maximal degree in co-relation 7905. Up to 936 conditions per place. [2024-06-21 15:44:31,618 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 206 selfloop transitions, 38 changer transitions 0/246 dead transitions. [2024-06-21 15:44:31,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 246 transitions, 3461 flow [2024-06-21 15:44:31,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:44:31,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:44:31,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-21 15:44:31,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-21 15:44:31,619 INFO L175 Difference]: Start difference. First operand has 243 places, 226 transitions, 2873 flow. Second operand 10 states and 112 transitions. [2024-06-21 15:44:31,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 246 transitions, 3461 flow [2024-06-21 15:44:31,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 246 transitions, 3403 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-21 15:44:31,829 INFO L231 Difference]: Finished difference. Result has 250 places, 231 transitions, 2980 flow [2024-06-21 15:44:31,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2815, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2980, PETRI_PLACES=250, PETRI_TRANSITIONS=231} [2024-06-21 15:44:31,830 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 220 predicate places. [2024-06-21 15:44:31,830 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 231 transitions, 2980 flow [2024-06-21 15:44:31,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:44:31,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:44:31,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:44:31,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-21 15:44:31,830 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)] === [2024-06-21 15:44:31,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:44:31,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1561707148, now seen corresponding path program 1 times [2024-06-21 15:44:31,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:44:31,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533523076] [2024-06-21 15:44:31,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:44:31,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:44:31,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:44:32,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:44:32,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:44:32,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533523076] [2024-06-21 15:44:32,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533523076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:44:32,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:44:32,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 15:44:32,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615328600] [2024-06-21 15:44:32,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:44:32,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 15:44:32,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:44:32,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 15:44:32,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 15:44:32,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:44:32,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 231 transitions, 2980 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:44:32,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:44:32,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:44:32,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:44:33,369 INFO L124 PetriNetUnfolderBase]: 611/1075 cut-off events. [2024-06-21 15:44:33,369 INFO L125 PetriNetUnfolderBase]: For 66221/66221 co-relation queries the response was YES. [2024-06-21 15:44:33,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8176 conditions, 1075 events. 611/1075 cut-off events. For 66221/66221 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 5323 event pairs, 101 based on Foata normal form. 1/1075 useless extension candidates. Maximal degree in co-relation 8057. Up to 935 conditions per place. [2024-06-21 15:44:33,379 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 205 selfloop transitions, 41 changer transitions 0/248 dead transitions. [2024-06-21 15:44:33,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 248 transitions, 3574 flow [2024-06-21 15:44:33,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:44:33,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:44:33,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-21 15:44:33,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3906810035842294 [2024-06-21 15:44:33,380 INFO L175 Difference]: Start difference. First operand has 250 places, 231 transitions, 2980 flow. Second operand 9 states and 109 transitions. [2024-06-21 15:44:33,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 248 transitions, 3574 flow [2024-06-21 15:44:33,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 248 transitions, 3499 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-21 15:44:33,647 INFO L231 Difference]: Finished difference. Result has 253 places, 233 transitions, 3060 flow [2024-06-21 15:44:33,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2905, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3060, PETRI_PLACES=253, PETRI_TRANSITIONS=233} [2024-06-21 15:44:33,647 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 223 predicate places. [2024-06-21 15:44:33,647 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 233 transitions, 3060 flow [2024-06-21 15:44:33,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:44:33,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:44:33,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:44:33,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-21 15:44:33,648 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)] === [2024-06-21 15:44:33,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:44:33,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1549224418, now seen corresponding path program 4 times [2024-06-21 15:44:33,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:44:33,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805102316] [2024-06-21 15:44:33,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:44:33,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:44:33,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:44:34,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:44:34,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:44:34,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805102316] [2024-06-21 15:44:34,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805102316] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:44:34,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:44:34,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:44:34,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656388232] [2024-06-21 15:44:34,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:44:34,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:44:34,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:44:34,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:44:34,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:44:34,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:44:34,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 233 transitions, 3060 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:44:34,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:44:34,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:44:34,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:44:34,743 INFO L124 PetriNetUnfolderBase]: 629/1109 cut-off events. [2024-06-21 15:44:34,743 INFO L125 PetriNetUnfolderBase]: For 70493/70493 co-relation queries the response was YES. [2024-06-21 15:44:34,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8466 conditions, 1109 events. 629/1109 cut-off events. For 70493/70493 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5563 event pairs, 107 based on Foata normal form. 2/1109 useless extension candidates. Maximal degree in co-relation 8347. Up to 975 conditions per place. [2024-06-21 15:44:34,754 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 215 selfloop transitions, 39 changer transitions 0/256 dead transitions. [2024-06-21 15:44:34,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 256 transitions, 3742 flow [2024-06-21 15:44:34,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:44:34,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:44:34,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-21 15:44:34,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-21 15:44:34,755 INFO L175 Difference]: Start difference. First operand has 253 places, 233 transitions, 3060 flow. Second operand 10 states and 110 transitions. [2024-06-21 15:44:34,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 256 transitions, 3742 flow [2024-06-21 15:44:34,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 256 transitions, 3613 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-21 15:44:34,970 INFO L231 Difference]: Finished difference. Result has 259 places, 241 transitions, 3178 flow [2024-06-21 15:44:34,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2943, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3178, PETRI_PLACES=259, PETRI_TRANSITIONS=241} [2024-06-21 15:44:34,970 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 229 predicate places. [2024-06-21 15:44:34,970 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 241 transitions, 3178 flow [2024-06-21 15:44:34,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:44:34,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:44:34,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:44:34,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-21 15:44:34,971 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)] === [2024-06-21 15:44:34,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:44:34,972 INFO L85 PathProgramCache]: Analyzing trace with hash 19081552, now seen corresponding path program 5 times [2024-06-21 15:44:34,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:44:34,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366715516] [2024-06-21 15:44:34,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:44:34,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:44:34,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:44:35,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:44:35,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:44:35,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366715516] [2024-06-21 15:44:35,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366715516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:44:35,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:44:35,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:44:35,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000938444] [2024-06-21 15:44:35,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:44:35,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:44:35,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:44:35,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:44:35,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:44:35,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:44:35,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 241 transitions, 3178 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:44:35,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:44:35,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:44:35,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:44:36,133 INFO L124 PetriNetUnfolderBase]: 637/1125 cut-off events. [2024-06-21 15:44:36,133 INFO L125 PetriNetUnfolderBase]: For 72756/72756 co-relation queries the response was YES. [2024-06-21 15:44:36,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8582 conditions, 1125 events. 637/1125 cut-off events. For 72756/72756 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5663 event pairs, 103 based on Foata normal form. 2/1126 useless extension candidates. Maximal degree in co-relation 8458. Up to 974 conditions per place. [2024-06-21 15:44:36,145 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 214 selfloop transitions, 42 changer transitions 0/258 dead transitions. [2024-06-21 15:44:36,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 258 transitions, 3755 flow [2024-06-21 15:44:36,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:44:36,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:44:36,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-21 15:44:36,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-21 15:44:36,146 INFO L175 Difference]: Start difference. First operand has 259 places, 241 transitions, 3178 flow. Second operand 10 states and 110 transitions. [2024-06-21 15:44:36,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 258 transitions, 3755 flow [2024-06-21 15:44:36,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 258 transitions, 3704 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-21 15:44:36,450 INFO L231 Difference]: Finished difference. Result has 267 places, 243 transitions, 3253 flow [2024-06-21 15:44:36,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3127, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3253, PETRI_PLACES=267, PETRI_TRANSITIONS=243} [2024-06-21 15:44:36,451 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 237 predicate places. [2024-06-21 15:44:36,451 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 243 transitions, 3253 flow [2024-06-21 15:44:36,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:44:36,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:44:36,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:44:36,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-21 15:44:36,452 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)] === [2024-06-21 15:44:36,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:44:36,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1634054394, now seen corresponding path program 6 times [2024-06-21 15:44:36,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:44:36,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544258723] [2024-06-21 15:44:36,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:44:36,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:44:36,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:44:37,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:44:37,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:44:37,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544258723] [2024-06-21 15:44:37,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544258723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:44:37,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:44:37,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:44:37,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478566527] [2024-06-21 15:44:37,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:44:37,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:44:37,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:44:37,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:44:37,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:44:37,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:44:37,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 243 transitions, 3253 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:44:37,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:44:37,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:44:37,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:44:37,827 INFO L124 PetriNetUnfolderBase]: 654/1160 cut-off events. [2024-06-21 15:44:37,828 INFO L125 PetriNetUnfolderBase]: For 75457/75457 co-relation queries the response was YES. [2024-06-21 15:44:37,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8790 conditions, 1160 events. 654/1160 cut-off events. For 75457/75457 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5918 event pairs, 79 based on Foata normal form. 2/1161 useless extension candidates. Maximal degree in co-relation 8663. Up to 950 conditions per place. [2024-06-21 15:44:37,844 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 228 selfloop transitions, 34 changer transitions 0/264 dead transitions. [2024-06-21 15:44:37,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 264 transitions, 3861 flow [2024-06-21 15:44:37,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:44:37,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:44:37,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-21 15:44:37,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32903225806451614 [2024-06-21 15:44:37,845 INFO L175 Difference]: Start difference. First operand has 267 places, 243 transitions, 3253 flow. Second operand 10 states and 102 transitions. [2024-06-21 15:44:37,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 264 transitions, 3861 flow [2024-06-21 15:44:38,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 264 transitions, 3760 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-21 15:44:38,150 INFO L231 Difference]: Finished difference. Result has 272 places, 247 transitions, 3278 flow [2024-06-21 15:44:38,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3154, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3278, PETRI_PLACES=272, PETRI_TRANSITIONS=247} [2024-06-21 15:44:38,150 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 242 predicate places. [2024-06-21 15:44:38,150 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 247 transitions, 3278 flow [2024-06-21 15:44:38,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:44:38,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:44:38,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:44:38,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-21 15:44:38,151 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)] === [2024-06-21 15:44:38,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:44:38,151 INFO L85 PathProgramCache]: Analyzing trace with hash 745881462, now seen corresponding path program 7 times [2024-06-21 15:44:38,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:44:38,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989391487] [2024-06-21 15:44:38,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:44:38,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:44:38,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:44:38,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:44:38,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:44:38,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989391487] [2024-06-21 15:44:38,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989391487] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:44:38,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:44:38,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 15:44:38,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123429064] [2024-06-21 15:44:38,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:44:38,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 15:44:38,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:44:38,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 15:44:38,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 15:44:38,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:44:38,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 247 transitions, 3278 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:44:38,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:44:38,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:44:38,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:44:39,325 INFO L124 PetriNetUnfolderBase]: 671/1194 cut-off events. [2024-06-21 15:44:39,326 INFO L125 PetriNetUnfolderBase]: For 75757/75757 co-relation queries the response was YES. [2024-06-21 15:44:39,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8970 conditions, 1194 events. 671/1194 cut-off events. For 75757/75757 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 6142 event pairs, 117 based on Foata normal form. 2/1195 useless extension candidates. Maximal degree in co-relation 8840. Up to 1052 conditions per place. [2024-06-21 15:44:39,341 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 234 selfloop transitions, 33 changer transitions 0/269 dead transitions. [2024-06-21 15:44:39,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 269 transitions, 3934 flow [2024-06-21 15:44:39,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:44:39,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:44:39,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-21 15:44:39,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-21 15:44:39,343 INFO L175 Difference]: Start difference. First operand has 272 places, 247 transitions, 3278 flow. Second operand 9 states and 106 transitions. [2024-06-21 15:44:39,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 269 transitions, 3934 flow [2024-06-21 15:44:39,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 269 transitions, 3854 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-21 15:44:39,647 INFO L231 Difference]: Finished difference. Result has 279 places, 252 transitions, 3366 flow [2024-06-21 15:44:39,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3199, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3366, PETRI_PLACES=279, PETRI_TRANSITIONS=252} [2024-06-21 15:44:39,647 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 249 predicate places. [2024-06-21 15:44:39,648 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 252 transitions, 3366 flow [2024-06-21 15:44:39,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:44:39,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:44:39,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:44:39,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-21 15:44:39,648 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)] === [2024-06-21 15:44:39,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:44:39,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1587710180, now seen corresponding path program 2 times [2024-06-21 15:44:39,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:44:39,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730967296] [2024-06-21 15:44:39,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:44:39,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:44:39,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:44:40,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:44:40,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:44:40,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730967296] [2024-06-21 15:44:40,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730967296] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:44:40,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:44:40,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:44:40,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639658028] [2024-06-21 15:44:40,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:44:40,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:44:40,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:44:40,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:44:40,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:44:41,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:44:41,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 252 transitions, 3366 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:44:41,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:44:41,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:44:41,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:44:41,470 INFO L124 PetriNetUnfolderBase]: 680/1209 cut-off events. [2024-06-21 15:44:41,470 INFO L125 PetriNetUnfolderBase]: For 75796/75796 co-relation queries the response was YES. [2024-06-21 15:44:41,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9131 conditions, 1209 events. 680/1209 cut-off events. For 75796/75796 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 6240 event pairs, 116 based on Foata normal form. 1/1209 useless extension candidates. Maximal degree in co-relation 8999. Up to 1068 conditions per place. [2024-06-21 15:44:41,482 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 230 selfloop transitions, 42 changer transitions 0/274 dead transitions. [2024-06-21 15:44:41,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 274 transitions, 4056 flow [2024-06-21 15:44:41,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:44:41,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:44:41,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-21 15:44:41,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-21 15:44:41,483 INFO L175 Difference]: Start difference. First operand has 279 places, 252 transitions, 3366 flow. Second operand 10 states and 112 transitions. [2024-06-21 15:44:41,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 274 transitions, 4056 flow [2024-06-21 15:44:41,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 274 transitions, 3995 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-21 15:44:41,807 INFO L231 Difference]: Finished difference. Result has 288 places, 258 transitions, 3521 flow [2024-06-21 15:44:41,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3305, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3521, PETRI_PLACES=288, PETRI_TRANSITIONS=258} [2024-06-21 15:44:41,807 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 258 predicate places. [2024-06-21 15:44:41,808 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 258 transitions, 3521 flow [2024-06-21 15:44:41,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:44:41,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:44:41,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:44:41,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-21 15:44:41,808 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)] === [2024-06-21 15:44:41,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:44:41,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1587710366, now seen corresponding path program 8 times [2024-06-21 15:44:41,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:44:41,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395638930] [2024-06-21 15:44:41,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:44:41,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:44:41,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:44:42,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:44:42,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:44:42,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395638930] [2024-06-21 15:44:42,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395638930] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:44:42,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:44:42,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:44:42,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266006434] [2024-06-21 15:44:42,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:44:42,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:44:42,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:44:42,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:44:42,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:44:42,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:44:42,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 258 transitions, 3521 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:44:42,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:44:42,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:44:42,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:44:43,073 INFO L124 PetriNetUnfolderBase]: 684/1217 cut-off events. [2024-06-21 15:44:43,073 INFO L125 PetriNetUnfolderBase]: For 80747/80747 co-relation queries the response was YES. [2024-06-21 15:44:43,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9272 conditions, 1217 events. 684/1217 cut-off events. For 80747/80747 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6330 event pairs, 123 based on Foata normal form. 2/1217 useless extension candidates. Maximal degree in co-relation 9136. Up to 1079 conditions per place. [2024-06-21 15:44:43,086 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 232 selfloop transitions, 41 changer transitions 0/275 dead transitions. [2024-06-21 15:44:43,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 275 transitions, 4137 flow [2024-06-21 15:44:43,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:44:43,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:44:43,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-21 15:44:43,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-21 15:44:43,087 INFO L175 Difference]: Start difference. First operand has 288 places, 258 transitions, 3521 flow. Second operand 10 states and 111 transitions. [2024-06-21 15:44:43,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 275 transitions, 4137 flow [2024-06-21 15:44:43,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 275 transitions, 4025 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-21 15:44:43,427 INFO L231 Difference]: Finished difference. Result has 292 places, 259 transitions, 3524 flow [2024-06-21 15:44:43,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3409, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3524, PETRI_PLACES=292, PETRI_TRANSITIONS=259} [2024-06-21 15:44:43,428 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 262 predicate places. [2024-06-21 15:44:43,428 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 259 transitions, 3524 flow [2024-06-21 15:44:43,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:44:43,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:44:43,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:44:43,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-21 15:44:43,429 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)] === [2024-06-21 15:44:43,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:44:43,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1587715016, now seen corresponding path program 9 times [2024-06-21 15:44:43,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:44:43,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359619528] [2024-06-21 15:44:43,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:44:43,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:44:43,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:44:44,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:44:44,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:44:44,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359619528] [2024-06-21 15:44:44,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359619528] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:44:44,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:44:44,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:44:44,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202207601] [2024-06-21 15:44:44,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:44:44,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:44:44,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:44:44,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:44:44,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:44:44,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:44:44,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 259 transitions, 3524 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:44:44,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:44:44,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:44:44,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:44:44,682 INFO L124 PetriNetUnfolderBase]: 692/1233 cut-off events. [2024-06-21 15:44:44,682 INFO L125 PetriNetUnfolderBase]: For 83509/83509 co-relation queries the response was YES. [2024-06-21 15:44:44,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9371 conditions, 1233 events. 692/1233 cut-off events. For 83509/83509 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 6453 event pairs, 123 based on Foata normal form. 2/1233 useless extension candidates. Maximal degree in co-relation 9234. Up to 1098 conditions per place. [2024-06-21 15:44:44,697 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 237 selfloop transitions, 38 changer transitions 0/277 dead transitions. [2024-06-21 15:44:44,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 277 transitions, 4147 flow [2024-06-21 15:44:44,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:44:44,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:44:44,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-21 15:44:44,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-21 15:44:44,698 INFO L175 Difference]: Start difference. First operand has 292 places, 259 transitions, 3524 flow. Second operand 10 states and 110 transitions. [2024-06-21 15:44:44,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 277 transitions, 4147 flow [2024-06-21 15:44:45,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 277 transitions, 4053 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-21 15:44:45,026 INFO L231 Difference]: Finished difference. Result has 296 places, 261 transitions, 3548 flow [2024-06-21 15:44:45,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3430, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3548, PETRI_PLACES=296, PETRI_TRANSITIONS=261} [2024-06-21 15:44:45,027 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 266 predicate places. [2024-06-21 15:44:45,027 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 261 transitions, 3548 flow [2024-06-21 15:44:45,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:44:45,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:44:45,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:44:45,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-21 15:44:45,027 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)] === [2024-06-21 15:44:45,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:44:45,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1417007936, now seen corresponding path program 10 times [2024-06-21 15:44:45,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:44:45,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650919155] [2024-06-21 15:44:45,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:44:45,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:44:45,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:44:45,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:44:45,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:44:45,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650919155] [2024-06-21 15:44:45,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650919155] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:44:45,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:44:45,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:44:45,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146882474] [2024-06-21 15:44:45,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:44:45,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:44:45,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:44:45,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:44:45,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:44:45,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:44:45,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 261 transitions, 3548 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:44:45,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:44:45,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:44:45,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:44:46,265 INFO L124 PetriNetUnfolderBase]: 696/1243 cut-off events. [2024-06-21 15:44:46,265 INFO L125 PetriNetUnfolderBase]: For 85952/85952 co-relation queries the response was YES. [2024-06-21 15:44:46,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9449 conditions, 1243 events. 696/1243 cut-off events. For 85952/85952 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6527 event pairs, 116 based on Foata normal form. 2/1241 useless extension candidates. Maximal degree in co-relation 9310. Up to 1096 conditions per place. [2024-06-21 15:44:46,278 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 235 selfloop transitions, 41 changer transitions 0/278 dead transitions. [2024-06-21 15:44:46,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 278 transitions, 4174 flow [2024-06-21 15:44:46,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:44:46,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:44:46,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-21 15:44:46,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-21 15:44:46,279 INFO L175 Difference]: Start difference. First operand has 296 places, 261 transitions, 3548 flow. Second operand 10 states and 109 transitions. [2024-06-21 15:44:46,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 278 transitions, 4174 flow [2024-06-21 15:44:46,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 278 transitions, 4077 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-21 15:44:46,626 INFO L231 Difference]: Finished difference. Result has 299 places, 262 transitions, 3569 flow [2024-06-21 15:44:46,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3451, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3569, PETRI_PLACES=299, PETRI_TRANSITIONS=262} [2024-06-21 15:44:46,627 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 269 predicate places. [2024-06-21 15:44:46,627 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 262 transitions, 3569 flow [2024-06-21 15:44:46,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:44:46,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:44:46,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:44:46,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-21 15:44:46,627 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)] === [2024-06-21 15:44:46,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:44:46,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1417012586, now seen corresponding path program 11 times [2024-06-21 15:44:46,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:44:46,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511542373] [2024-06-21 15:44:46,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:44:46,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:44:46,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:44:47,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:44:47,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:44:47,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511542373] [2024-06-21 15:44:47,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511542373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:44:47,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:44:47,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:44:47,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092287395] [2024-06-21 15:44:47,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:44:47,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:44:47,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:44:47,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:44:47,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:44:47,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:44:47,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 262 transitions, 3569 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:44:47,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:44:47,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:44:47,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:44:47,996 INFO L124 PetriNetUnfolderBase]: 704/1259 cut-off events. [2024-06-21 15:44:47,996 INFO L125 PetriNetUnfolderBase]: For 88308/88308 co-relation queries the response was YES. [2024-06-21 15:44:48,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9555 conditions, 1259 events. 704/1259 cut-off events. For 88308/88308 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6652 event pairs, 114 based on Foata normal form. 2/1257 useless extension candidates. Maximal degree in co-relation 9415. Up to 1112 conditions per place. [2024-06-21 15:44:48,010 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 238 selfloop transitions, 40 changer transitions 0/280 dead transitions. [2024-06-21 15:44:48,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 280 transitions, 4202 flow [2024-06-21 15:44:48,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:44:48,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:44:48,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-21 15:44:48,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-21 15:44:48,012 INFO L175 Difference]: Start difference. First operand has 299 places, 262 transitions, 3569 flow. Second operand 10 states and 108 transitions. [2024-06-21 15:44:48,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 280 transitions, 4202 flow [2024-06-21 15:44:48,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 280 transitions, 4094 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-21 15:44:48,368 INFO L231 Difference]: Finished difference. Result has 302 places, 264 transitions, 3586 flow [2024-06-21 15:44:48,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3461, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3586, PETRI_PLACES=302, PETRI_TRANSITIONS=264} [2024-06-21 15:44:48,369 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 272 predicate places. [2024-06-21 15:44:48,369 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 264 transitions, 3586 flow [2024-06-21 15:44:48,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:44:48,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:44:48,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:44:48,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-21 15:44:48,370 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)] === [2024-06-21 15:44:48,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:44:48,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1583061792, now seen corresponding path program 1 times [2024-06-21 15:44:48,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:44:48,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629966731] [2024-06-21 15:44:48,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:44:48,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:44:48,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:44:49,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:44:49,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:44:49,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629966731] [2024-06-21 15:44:49,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629966731] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:44:49,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:44:49,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:44:49,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652533644] [2024-06-21 15:44:49,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:44:49,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:44:49,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:44:49,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:44:49,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:44:49,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:44:49,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 264 transitions, 3586 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:44:49,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:44:49,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:44:49,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:44:50,312 INFO L124 PetriNetUnfolderBase]: 713/1274 cut-off events. [2024-06-21 15:44:50,312 INFO L125 PetriNetUnfolderBase]: For 90463/90463 co-relation queries the response was YES. [2024-06-21 15:44:50,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9671 conditions, 1274 events. 713/1274 cut-off events. For 90463/90463 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 6754 event pairs, 123 based on Foata normal form. 2/1272 useless extension candidates. Maximal degree in co-relation 9529. Up to 1129 conditions per place. [2024-06-21 15:44:50,326 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 240 selfloop transitions, 44 changer transitions 0/286 dead transitions. [2024-06-21 15:44:50,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 286 transitions, 4288 flow [2024-06-21 15:44:50,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:44:50,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:44:50,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-21 15:44:50,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-21 15:44:50,327 INFO L175 Difference]: Start difference. First operand has 302 places, 264 transitions, 3586 flow. Second operand 11 states and 120 transitions. [2024-06-21 15:44:50,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 286 transitions, 4288 flow [2024-06-21 15:44:50,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 286 transitions, 4182 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-21 15:44:50,689 INFO L231 Difference]: Finished difference. Result has 307 places, 269 transitions, 3673 flow [2024-06-21 15:44:50,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3480, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3673, PETRI_PLACES=307, PETRI_TRANSITIONS=269} [2024-06-21 15:44:50,689 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 277 predicate places. [2024-06-21 15:44:50,689 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 269 transitions, 3673 flow [2024-06-21 15:44:50,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:44:50,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:44:50,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:44:50,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-21 15:44:50,690 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)] === [2024-06-21 15:44:50,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:44:50,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1416828012, now seen corresponding path program 2 times [2024-06-21 15:44:50,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:44:50,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541933493] [2024-06-21 15:44:50,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:44:50,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:44:50,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:44:51,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:44:51,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:44:51,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541933493] [2024-06-21 15:44:51,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541933493] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:44:51,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:44:51,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:44:51,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944883852] [2024-06-21 15:44:51,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:44:51,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:44:51,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:44:51,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:44:51,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:44:51,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:44:51,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 269 transitions, 3673 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:44:51,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:44:51,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:44:51,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:44:52,240 INFO L124 PetriNetUnfolderBase]: 719/1284 cut-off events. [2024-06-21 15:44:52,240 INFO L125 PetriNetUnfolderBase]: For 92911/92911 co-relation queries the response was YES. [2024-06-21 15:44:52,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9872 conditions, 1284 events. 719/1284 cut-off events. For 92911/92911 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6797 event pairs, 116 based on Foata normal form. 2/1282 useless extension candidates. Maximal degree in co-relation 9728. Up to 1127 conditions per place. [2024-06-21 15:44:52,251 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 243 selfloop transitions, 44 changer transitions 0/289 dead transitions. [2024-06-21 15:44:52,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 289 transitions, 4369 flow [2024-06-21 15:44:52,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:44:52,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:44:52,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-21 15:44:52,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-21 15:44:52,252 INFO L175 Difference]: Start difference. First operand has 307 places, 269 transitions, 3673 flow. Second operand 11 states and 119 transitions. [2024-06-21 15:44:52,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 289 transitions, 4369 flow [2024-06-21 15:44:52,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 289 transitions, 4250 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-21 15:44:52,640 INFO L231 Difference]: Finished difference. Result has 310 places, 271 transitions, 3711 flow [2024-06-21 15:44:52,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3554, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3711, PETRI_PLACES=310, PETRI_TRANSITIONS=271} [2024-06-21 15:44:52,641 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 280 predicate places. [2024-06-21 15:44:52,641 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 271 transitions, 3711 flow [2024-06-21 15:44:52,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:44:52,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:44:52,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:44:52,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-21 15:44:52,641 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)] === [2024-06-21 15:44:52,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:44:52,641 INFO L85 PathProgramCache]: Analyzing trace with hash 923132952, now seen corresponding path program 12 times [2024-06-21 15:44:52,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:44:52,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835452128] [2024-06-21 15:44:52,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:44:52,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:44:52,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:44:53,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:44:53,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:44:53,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835452128] [2024-06-21 15:44:53,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835452128] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:44:53,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:44:53,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 15:44:53,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576180761] [2024-06-21 15:44:53,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:44:53,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 15:44:53,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:44:53,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 15:44:53,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 15:44:53,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:44:53,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 271 transitions, 3711 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:44:53,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:44:53,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:44:53,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:44:53,952 INFO L124 PetriNetUnfolderBase]: 723/1292 cut-off events. [2024-06-21 15:44:53,953 INFO L125 PetriNetUnfolderBase]: For 95605/95605 co-relation queries the response was YES. [2024-06-21 15:44:53,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9962 conditions, 1292 events. 723/1292 cut-off events. For 95605/95605 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6879 event pairs, 116 based on Foata normal form. 2/1290 useless extension candidates. Maximal degree in co-relation 9817. Up to 1120 conditions per place. [2024-06-21 15:44:53,965 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 239 selfloop transitions, 47 changer transitions 0/288 dead transitions. [2024-06-21 15:44:53,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 288 transitions, 4367 flow [2024-06-21 15:44:53,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:44:53,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:44:53,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-21 15:44:53,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-21 15:44:53,966 INFO L175 Difference]: Start difference. First operand has 310 places, 271 transitions, 3711 flow. Second operand 10 states and 110 transitions. [2024-06-21 15:44:53,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 288 transitions, 4367 flow [2024-06-21 15:44:54,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 288 transitions, 4234 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-21 15:44:54,385 INFO L231 Difference]: Finished difference. Result has 311 places, 272 transitions, 3712 flow [2024-06-21 15:44:54,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3578, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3712, PETRI_PLACES=311, PETRI_TRANSITIONS=272} [2024-06-21 15:44:54,386 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 281 predicate places. [2024-06-21 15:44:54,386 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 272 transitions, 3712 flow [2024-06-21 15:44:54,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:44:54,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:44:54,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:44:54,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-21 15:44:54,387 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)] === [2024-06-21 15:44:54,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:44:54,387 INFO L85 PathProgramCache]: Analyzing trace with hash 923370536, now seen corresponding path program 3 times [2024-06-21 15:44:54,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:44:54,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677248573] [2024-06-21 15:44:54,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:44:54,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:44:54,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:44:55,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:44:55,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:44:55,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677248573] [2024-06-21 15:44:55,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677248573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:44:55,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:44:55,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:44:55,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289741301] [2024-06-21 15:44:55,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:44:55,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:44:55,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:44:55,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:44:55,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:44:55,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:44:55,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 272 transitions, 3712 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:44:55,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:44:55,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:44:55,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:44:56,134 INFO L124 PetriNetUnfolderBase]: 729/1302 cut-off events. [2024-06-21 15:44:56,135 INFO L125 PetriNetUnfolderBase]: For 97891/97891 co-relation queries the response was YES. [2024-06-21 15:44:56,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10059 conditions, 1302 events. 729/1302 cut-off events. For 97891/97891 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 6955 event pairs, 114 based on Foata normal form. 2/1300 useless extension candidates. Maximal degree in co-relation 9913. Up to 1086 conditions per place. [2024-06-21 15:44:56,149 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 230 selfloop transitions, 60 changer transitions 0/292 dead transitions. [2024-06-21 15:44:56,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 292 transitions, 4418 flow [2024-06-21 15:44:56,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:44:56,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:44:56,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-21 15:44:56,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-21 15:44:56,151 INFO L175 Difference]: Start difference. First operand has 311 places, 272 transitions, 3712 flow. Second operand 11 states and 121 transitions. [2024-06-21 15:44:56,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 292 transitions, 4418 flow [2024-06-21 15:44:56,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 292 transitions, 4294 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-21 15:44:56,612 INFO L231 Difference]: Finished difference. Result has 314 places, 274 transitions, 3781 flow [2024-06-21 15:44:56,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3588, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3781, PETRI_PLACES=314, PETRI_TRANSITIONS=274} [2024-06-21 15:44:56,612 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 284 predicate places. [2024-06-21 15:44:56,612 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 274 transitions, 3781 flow [2024-06-21 15:44:56,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:44:56,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:44:56,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:44:56,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-21 15:44:56,613 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)] === [2024-06-21 15:44:56,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:44:56,613 INFO L85 PathProgramCache]: Analyzing trace with hash 923378906, now seen corresponding path program 4 times [2024-06-21 15:44:56,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:44:56,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968870185] [2024-06-21 15:44:56,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:44:56,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:44:56,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:44:57,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:44:57,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:44:57,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968870185] [2024-06-21 15:44:57,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968870185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:44:57,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:44:57,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:44:57,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859060649] [2024-06-21 15:44:57,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:44:57,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:44:57,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:44:57,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:44:57,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:44:57,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:44:57,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 274 transitions, 3781 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:44:57,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:44:57,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:44:57,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:44:58,264 INFO L124 PetriNetUnfolderBase]: 735/1312 cut-off events. [2024-06-21 15:44:58,264 INFO L125 PetriNetUnfolderBase]: For 100670/100670 co-relation queries the response was YES. [2024-06-21 15:44:58,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10192 conditions, 1312 events. 735/1312 cut-off events. For 100670/100670 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7023 event pairs, 114 based on Foata normal form. 2/1310 useless extension candidates. Maximal degree in co-relation 10045. Up to 1053 conditions per place. [2024-06-21 15:44:58,285 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 223 selfloop transitions, 71 changer transitions 0/296 dead transitions. [2024-06-21 15:44:58,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 296 transitions, 4507 flow [2024-06-21 15:44:58,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 15:44:58,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 15:44:58,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-21 15:44:58,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3521505376344086 [2024-06-21 15:44:58,286 INFO L175 Difference]: Start difference. First operand has 314 places, 274 transitions, 3781 flow. Second operand 12 states and 131 transitions. [2024-06-21 15:44:58,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 296 transitions, 4507 flow [2024-06-21 15:44:58,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 296 transitions, 4338 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-21 15:44:58,720 INFO L231 Difference]: Finished difference. Result has 317 places, 276 transitions, 3834 flow [2024-06-21 15:44:58,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3612, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3834, PETRI_PLACES=317, PETRI_TRANSITIONS=276} [2024-06-21 15:44:58,720 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 287 predicate places. [2024-06-21 15:44:58,720 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 276 transitions, 3834 flow [2024-06-21 15:44:58,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:44:58,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:44:58,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:44:58,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-21 15:44:58,721 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)] === [2024-06-21 15:44:58,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:44:58,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1410332582, now seen corresponding path program 1 times [2024-06-21 15:44:58,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:44:58,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925456128] [2024-06-21 15:44:58,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:44:58,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:44:58,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:44:59,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:44:59,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:44:59,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925456128] [2024-06-21 15:44:59,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925456128] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:44:59,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:44:59,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:44:59,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324182349] [2024-06-21 15:44:59,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:44:59,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:44:59,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:44:59,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:44:59,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:45:00,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:45:00,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 276 transitions, 3834 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:45:00,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:45:00,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:45:00,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:45:00,670 INFO L124 PetriNetUnfolderBase]: 759/1364 cut-off events. [2024-06-21 15:45:00,670 INFO L125 PetriNetUnfolderBase]: For 139522/139522 co-relation queries the response was YES. [2024-06-21 15:45:00,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10507 conditions, 1364 events. 759/1364 cut-off events. For 139522/139522 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 7370 event pairs, 132 based on Foata normal form. 14/1374 useless extension candidates. Maximal degree in co-relation 10359. Up to 1152 conditions per place. [2024-06-21 15:45:00,681 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 244 selfloop transitions, 46 changer transitions 9/301 dead transitions. [2024-06-21 15:45:00,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 301 transitions, 4598 flow [2024-06-21 15:45:00,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 15:45:00,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 15:45:00,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-21 15:45:00,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-21 15:45:00,682 INFO L175 Difference]: Start difference. First operand has 317 places, 276 transitions, 3834 flow. Second operand 12 states and 135 transitions. [2024-06-21 15:45:00,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 301 transitions, 4598 flow [2024-06-21 15:45:01,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 301 transitions, 4404 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-06-21 15:45:01,110 INFO L231 Difference]: Finished difference. Result has 320 places, 275 transitions, 3741 flow [2024-06-21 15:45:01,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3640, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3741, PETRI_PLACES=320, PETRI_TRANSITIONS=275} [2024-06-21 15:45:01,111 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 290 predicate places. [2024-06-21 15:45:01,111 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 275 transitions, 3741 flow [2024-06-21 15:45:01,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:45:01,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:45:01,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:45:01,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-21 15:45:01,111 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)] === [2024-06-21 15:45:01,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:45:01,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1992726314, now seen corresponding path program 13 times [2024-06-21 15:45:01,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:45:01,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015919299] [2024-06-21 15:45:01,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:45:01,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:45:01,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:45:01,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:45:01,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:45:01,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015919299] [2024-06-21 15:45:01,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015919299] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:45:01,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:45:01,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:45:01,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144094699] [2024-06-21 15:45:01,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:45:01,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:45:01,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:45:01,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:45:01,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:45:01,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:45:01,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 275 transitions, 3741 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:45:01,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:45:01,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:45:01,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:45:02,358 INFO L124 PetriNetUnfolderBase]: 751/1350 cut-off events. [2024-06-21 15:45:02,358 INFO L125 PetriNetUnfolderBase]: For 103045/103045 co-relation queries the response was YES. [2024-06-21 15:45:02,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10330 conditions, 1350 events. 751/1350 cut-off events. For 103045/103045 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 7276 event pairs, 95 based on Foata normal form. 2/1351 useless extension candidates. Maximal degree in co-relation 10181. Up to 1090 conditions per place. [2024-06-21 15:45:02,371 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 247 selfloop transitions, 41 changer transitions 0/290 dead transitions. [2024-06-21 15:45:02,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 290 transitions, 4385 flow [2024-06-21 15:45:02,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:45:02,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:45:02,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-06-21 15:45:02,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-21 15:45:02,372 INFO L175 Difference]: Start difference. First operand has 320 places, 275 transitions, 3741 flow. Second operand 9 states and 93 transitions. [2024-06-21 15:45:02,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 290 transitions, 4385 flow [2024-06-21 15:45:02,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 290 transitions, 4271 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-21 15:45:02,814 INFO L231 Difference]: Finished difference. Result has 319 places, 276 transitions, 3755 flow [2024-06-21 15:45:02,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3627, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3755, PETRI_PLACES=319, PETRI_TRANSITIONS=276} [2024-06-21 15:45:02,815 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 289 predicate places. [2024-06-21 15:45:02,815 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 276 transitions, 3755 flow [2024-06-21 15:45:02,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:45:02,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:45:02,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:45:02,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-21 15:45:02,816 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)] === [2024-06-21 15:45:02,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:45:02,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1701263174, now seen corresponding path program 14 times [2024-06-21 15:45:02,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:45:02,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846830270] [2024-06-21 15:45:02,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:45:02,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:45:02,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:45:03,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:45:03,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:45:03,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846830270] [2024-06-21 15:45:03,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846830270] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:45:03,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:45:03,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:45:03,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351594621] [2024-06-21 15:45:03,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:45:03,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:45:03,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:45:03,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:45:03,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:45:03,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:45:03,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 276 transitions, 3755 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:45:03,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:45:03,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:45:03,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:45:04,244 INFO L124 PetriNetUnfolderBase]: 755/1358 cut-off events. [2024-06-21 15:45:04,245 INFO L125 PetriNetUnfolderBase]: For 105323/105323 co-relation queries the response was YES. [2024-06-21 15:45:04,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10422 conditions, 1358 events. 755/1358 cut-off events. For 105323/105323 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 7341 event pairs, 134 based on Foata normal form. 2/1359 useless extension candidates. Maximal degree in co-relation 10272. Up to 1202 conditions per place. [2024-06-21 15:45:04,260 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 247 selfloop transitions, 41 changer transitions 0/290 dead transitions. [2024-06-21 15:45:04,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 290 transitions, 4399 flow [2024-06-21 15:45:04,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:45:04,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:45:04,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-21 15:45:04,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-21 15:45:04,261 INFO L175 Difference]: Start difference. First operand has 319 places, 276 transitions, 3755 flow. Second operand 9 states and 96 transitions. [2024-06-21 15:45:04,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 290 transitions, 4399 flow [2024-06-21 15:45:04,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 290 transitions, 4281 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-21 15:45:04,723 INFO L231 Difference]: Finished difference. Result has 321 places, 277 transitions, 3765 flow [2024-06-21 15:45:04,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3641, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3765, PETRI_PLACES=321, PETRI_TRANSITIONS=277} [2024-06-21 15:45:04,723 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 291 predicate places. [2024-06-21 15:45:04,723 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 277 transitions, 3765 flow [2024-06-21 15:45:04,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:45:04,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:45:04,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:45:04,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-21 15:45:04,724 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)] === [2024-06-21 15:45:04,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:45:04,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1701143018, now seen corresponding path program 3 times [2024-06-21 15:45:04,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:45:04,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669155210] [2024-06-21 15:45:04,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:45:04,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:45:04,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:45:05,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:45:05,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:45:05,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669155210] [2024-06-21 15:45:05,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669155210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:45:05,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:45:05,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:45:05,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700342720] [2024-06-21 15:45:05,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:45:05,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:45:05,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:45:05,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:45:05,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:45:05,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:45:05,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 277 transitions, 3765 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:45:05,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:45:05,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:45:05,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:45:06,495 INFO L124 PetriNetUnfolderBase]: 753/1355 cut-off events. [2024-06-21 15:45:06,495 INFO L125 PetriNetUnfolderBase]: For 96020/96020 co-relation queries the response was YES. [2024-06-21 15:45:06,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10203 conditions, 1355 events. 753/1355 cut-off events. For 96020/96020 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 7338 event pairs, 126 based on Foata normal form. 1/1355 useless extension candidates. Maximal degree in co-relation 10052. Up to 1160 conditions per place. [2024-06-21 15:45:06,510 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 224 selfloop transitions, 66 changer transitions 0/292 dead transitions. [2024-06-21 15:45:06,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 292 transitions, 4453 flow [2024-06-21 15:45:06,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:45:06,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:45:06,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-21 15:45:06,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-21 15:45:06,510 INFO L175 Difference]: Start difference. First operand has 321 places, 277 transitions, 3765 flow. Second operand 9 states and 102 transitions. [2024-06-21 15:45:06,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 292 transitions, 4453 flow [2024-06-21 15:45:07,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 292 transitions, 4341 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-21 15:45:07,026 INFO L231 Difference]: Finished difference. Result has 323 places, 279 transitions, 3870 flow [2024-06-21 15:45:07,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3653, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3870, PETRI_PLACES=323, PETRI_TRANSITIONS=279} [2024-06-21 15:45:07,027 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 293 predicate places. [2024-06-21 15:45:07,027 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 279 transitions, 3870 flow [2024-06-21 15:45:07,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:45:07,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:45:07,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:45:07,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-21 15:45:07,028 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)] === [2024-06-21 15:45:07,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:45:07,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1701143204, now seen corresponding path program 15 times [2024-06-21 15:45:07,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:45:07,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718986963] [2024-06-21 15:45:07,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:45:07,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:45:07,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:45:07,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:45:07,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:45:07,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718986963] [2024-06-21 15:45:07,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718986963] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:45:07,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:45:07,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:45:07,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567216474] [2024-06-21 15:45:07,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:45:07,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:45:07,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:45:07,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:45:07,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:45:07,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:45:07,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 279 transitions, 3870 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:45:07,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:45:07,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:45:07,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:45:08,440 INFO L124 PetriNetUnfolderBase]: 757/1363 cut-off events. [2024-06-21 15:45:08,440 INFO L125 PetriNetUnfolderBase]: For 99138/99138 co-relation queries the response was YES. [2024-06-21 15:45:08,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10320 conditions, 1363 events. 757/1363 cut-off events. For 99138/99138 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 7390 event pairs, 128 based on Foata normal form. 2/1364 useless extension candidates. Maximal degree in co-relation 10168. Up to 1180 conditions per place. [2024-06-21 15:45:08,456 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 232 selfloop transitions, 59 changer transitions 0/293 dead transitions. [2024-06-21 15:45:08,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 293 transitions, 4524 flow [2024-06-21 15:45:08,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:45:08,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:45:08,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-21 15:45:08,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35842293906810035 [2024-06-21 15:45:08,457 INFO L175 Difference]: Start difference. First operand has 323 places, 279 transitions, 3870 flow. Second operand 9 states and 100 transitions. [2024-06-21 15:45:08,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 293 transitions, 4524 flow [2024-06-21 15:45:08,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 293 transitions, 4355 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-21 15:45:08,937 INFO L231 Difference]: Finished difference. Result has 325 places, 280 transitions, 3863 flow [2024-06-21 15:45:08,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3701, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3863, PETRI_PLACES=325, PETRI_TRANSITIONS=280} [2024-06-21 15:45:08,938 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 295 predicate places. [2024-06-21 15:45:08,938 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 280 transitions, 3863 flow [2024-06-21 15:45:08,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:45:08,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:45:08,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:45:08,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-21 15:45:08,938 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)] === [2024-06-21 15:45:08,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:45:08,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1701147854, now seen corresponding path program 16 times [2024-06-21 15:45:08,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:45:08,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989309612] [2024-06-21 15:45:08,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:45:08,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:45:08,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:45:09,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:45:09,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:45:09,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989309612] [2024-06-21 15:45:09,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989309612] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:45:09,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:45:09,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:45:09,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460853397] [2024-06-21 15:45:09,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:45:09,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:45:09,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:45:09,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:45:09,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:45:09,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:45:09,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 280 transitions, 3863 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:45:09,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:45:09,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:45:09,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:45:10,269 INFO L124 PetriNetUnfolderBase]: 761/1371 cut-off events. [2024-06-21 15:45:10,269 INFO L125 PetriNetUnfolderBase]: For 99488/99488 co-relation queries the response was YES. [2024-06-21 15:45:10,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10367 conditions, 1371 events. 761/1371 cut-off events. For 99488/99488 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7443 event pairs, 124 based on Foata normal form. 2/1372 useless extension candidates. Maximal degree in co-relation 10214. Up to 1188 conditions per place. [2024-06-21 15:45:10,286 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 239 selfloop transitions, 53 changer transitions 0/294 dead transitions. [2024-06-21 15:45:10,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 294 transitions, 4517 flow [2024-06-21 15:45:10,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:45:10,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:45:10,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-21 15:45:10,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-21 15:45:10,287 INFO L175 Difference]: Start difference. First operand has 325 places, 280 transitions, 3863 flow. Second operand 9 states and 98 transitions. [2024-06-21 15:45:10,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 294 transitions, 4517 flow [2024-06-21 15:45:10,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 294 transitions, 4369 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-21 15:45:10,735 INFO L231 Difference]: Finished difference. Result has 327 places, 281 transitions, 3867 flow [2024-06-21 15:45:10,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3717, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3867, PETRI_PLACES=327, PETRI_TRANSITIONS=281} [2024-06-21 15:45:10,736 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 297 predicate places. [2024-06-21 15:45:10,736 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 281 transitions, 3867 flow [2024-06-21 15:45:10,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:45:10,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:45:10,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:45:10,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-21 15:45:10,736 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)] === [2024-06-21 15:45:10,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:45:10,736 INFO L85 PathProgramCache]: Analyzing trace with hash 111847610, now seen corresponding path program 17 times [2024-06-21 15:45:10,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:45:10,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999312439] [2024-06-21 15:45:10,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:45:10,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:45:10,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:45:11,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:45:11,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:45:11,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999312439] [2024-06-21 15:45:11,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999312439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:45:11,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:45:11,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:45:11,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156296191] [2024-06-21 15:45:11,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:45:11,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:45:11,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:45:11,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:45:11,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:45:11,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:45:11,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 281 transitions, 3867 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:45:11,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:45:11,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:45:11,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:45:12,053 INFO L124 PetriNetUnfolderBase]: 765/1379 cut-off events. [2024-06-21 15:45:12,053 INFO L125 PetriNetUnfolderBase]: For 99995/99995 co-relation queries the response was YES. [2024-06-21 15:45:12,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10396 conditions, 1379 events. 765/1379 cut-off events. For 99995/99995 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7509 event pairs, 109 based on Foata normal form. 2/1380 useless extension candidates. Maximal degree in co-relation 10242. Up to 1177 conditions per place. [2024-06-21 15:45:12,069 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 249 selfloop transitions, 47 changer transitions 0/298 dead transitions. [2024-06-21 15:45:12,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 298 transitions, 4551 flow [2024-06-21 15:45:12,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:45:12,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:45:12,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-21 15:45:12,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-21 15:45:12,070 INFO L175 Difference]: Start difference. First operand has 327 places, 281 transitions, 3867 flow. Second operand 9 states and 99 transitions. [2024-06-21 15:45:12,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 298 transitions, 4551 flow [2024-06-21 15:45:12,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 298 transitions, 4415 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-21 15:45:12,571 INFO L231 Difference]: Finished difference. Result has 329 places, 282 transitions, 3869 flow [2024-06-21 15:45:12,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3733, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3869, PETRI_PLACES=329, PETRI_TRANSITIONS=282} [2024-06-21 15:45:12,572 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 299 predicate places. [2024-06-21 15:45:12,572 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 282 transitions, 3869 flow [2024-06-21 15:45:12,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:45:12,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:45:12,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:45:12,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-21 15:45:12,573 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)] === [2024-06-21 15:45:12,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:45:12,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1409160948, now seen corresponding path program 4 times [2024-06-21 15:45:12,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:45:12,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091885742] [2024-06-21 15:45:12,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:45:12,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:45:12,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:45:14,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:45:14,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:45:14,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091885742] [2024-06-21 15:45:14,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091885742] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:45:14,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:45:14,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:45:14,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379943815] [2024-06-21 15:45:14,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:45:14,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:45:14,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:45:14,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:45:14,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:45:14,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:45:14,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 282 transitions, 3869 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:45:14,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:45:14,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:45:14,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:45:14,876 INFO L124 PetriNetUnfolderBase]: 761/1373 cut-off events. [2024-06-21 15:45:14,876 INFO L125 PetriNetUnfolderBase]: For 93284/93284 co-relation queries the response was YES. [2024-06-21 15:45:14,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10112 conditions, 1373 events. 761/1373 cut-off events. For 93284/93284 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7499 event pairs, 145 based on Foata normal form. 2/1374 useless extension candidates. Maximal degree in co-relation 9957. Up to 1200 conditions per place. [2024-06-21 15:45:14,890 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 230 selfloop transitions, 66 changer transitions 0/298 dead transitions. [2024-06-21 15:45:14,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 298 transitions, 4567 flow [2024-06-21 15:45:14,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:45:14,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:45:14,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-21 15:45:14,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-21 15:45:14,891 INFO L175 Difference]: Start difference. First operand has 329 places, 282 transitions, 3869 flow. Second operand 9 states and 102 transitions. [2024-06-21 15:45:14,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 298 transitions, 4567 flow [2024-06-21 15:45:15,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 298 transitions, 4425 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-21 15:45:15,443 INFO L231 Difference]: Finished difference. Result has 331 places, 283 transitions, 3923 flow [2024-06-21 15:45:15,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3727, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3923, PETRI_PLACES=331, PETRI_TRANSITIONS=283} [2024-06-21 15:45:15,443 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 301 predicate places. [2024-06-21 15:45:15,444 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 283 transitions, 3923 flow [2024-06-21 15:45:15,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:45:15,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:45:15,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:45:15,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-21 15:45:15,444 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)] === [2024-06-21 15:45:15,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:45:15,444 INFO L85 PathProgramCache]: Analyzing trace with hash -333449978, now seen corresponding path program 18 times [2024-06-21 15:45:15,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:45:15,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19344481] [2024-06-21 15:45:15,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:45:15,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:45:15,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:45:16,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:45:16,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:45:16,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19344481] [2024-06-21 15:45:16,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19344481] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:45:16,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:45:16,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:45:16,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260913131] [2024-06-21 15:45:16,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:45:16,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:45:16,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:45:16,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:45:16,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:45:16,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:45:16,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 283 transitions, 3923 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:45:16,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:45:16,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:45:16,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:45:16,730 INFO L124 PetriNetUnfolderBase]: 765/1381 cut-off events. [2024-06-21 15:45:16,730 INFO L125 PetriNetUnfolderBase]: For 92993/92993 co-relation queries the response was YES. [2024-06-21 15:45:16,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10168 conditions, 1381 events. 765/1381 cut-off events. For 92993/92993 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 7527 event pairs, 147 based on Foata normal form. 2/1382 useless extension candidates. Maximal degree in co-relation 10012. Up to 1215 conditions per place. [2024-06-21 15:45:16,744 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 241 selfloop transitions, 57 changer transitions 0/300 dead transitions. [2024-06-21 15:45:16,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 300 transitions, 4617 flow [2024-06-21 15:45:16,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:45:16,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:45:16,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-21 15:45:16,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36200716845878134 [2024-06-21 15:45:16,745 INFO L175 Difference]: Start difference. First operand has 331 places, 283 transitions, 3923 flow. Second operand 9 states and 101 transitions. [2024-06-21 15:45:16,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 300 transitions, 4617 flow [2024-06-21 15:45:17,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 300 transitions, 4409 flow, removed 36 selfloop flow, removed 8 redundant places. [2024-06-21 15:45:17,222 INFO L231 Difference]: Finished difference. Result has 332 places, 284 transitions, 3873 flow [2024-06-21 15:45:17,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3715, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3873, PETRI_PLACES=332, PETRI_TRANSITIONS=284} [2024-06-21 15:45:17,222 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 302 predicate places. [2024-06-21 15:45:17,222 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 284 transitions, 3873 flow [2024-06-21 15:45:17,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:45:17,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:45:17,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:45:17,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-21 15:45:17,223 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)] === [2024-06-21 15:45:17,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:45:17,224 INFO L85 PathProgramCache]: Analyzing trace with hash 111962930, now seen corresponding path program 19 times [2024-06-21 15:45:17,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:45:17,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80185825] [2024-06-21 15:45:17,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:45:17,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:45:17,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:45:18,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:45:18,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:45:18,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80185825] [2024-06-21 15:45:18,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80185825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:45:18,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:45:18,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:45:18,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474527019] [2024-06-21 15:45:18,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:45:18,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:45:18,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:45:18,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:45:18,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:45:18,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:45:18,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 284 transitions, 3873 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:45:18,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:45:18,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:45:18,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:45:18,689 INFO L124 PetriNetUnfolderBase]: 769/1389 cut-off events. [2024-06-21 15:45:18,690 INFO L125 PetriNetUnfolderBase]: For 93050/93050 co-relation queries the response was YES. [2024-06-21 15:45:18,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10136 conditions, 1389 events. 769/1389 cut-off events. For 93050/93050 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 7597 event pairs, 153 based on Foata normal form. 2/1387 useless extension candidates. Maximal degree in co-relation 9980. Up to 1254 conditions per place. [2024-06-21 15:45:18,703 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 257 selfloop transitions, 38 changer transitions 0/297 dead transitions. [2024-06-21 15:45:18,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 297 transitions, 4529 flow [2024-06-21 15:45:18,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:45:18,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:45:18,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-21 15:45:18,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-21 15:45:18,704 INFO L175 Difference]: Start difference. First operand has 332 places, 284 transitions, 3873 flow. Second operand 10 states and 108 transitions. [2024-06-21 15:45:18,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 297 transitions, 4529 flow [2024-06-21 15:45:19,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 297 transitions, 4385 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-21 15:45:19,178 INFO L231 Difference]: Finished difference. Result has 335 places, 285 transitions, 3847 flow [2024-06-21 15:45:19,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3731, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3847, PETRI_PLACES=335, PETRI_TRANSITIONS=285} [2024-06-21 15:45:19,178 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 305 predicate places. [2024-06-21 15:45:19,178 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 285 transitions, 3847 flow [2024-06-21 15:45:19,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:45:19,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:45:19,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:45:19,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-21 15:45:19,179 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)] === [2024-06-21 15:45:19,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:45:19,179 INFO L85 PathProgramCache]: Analyzing trace with hash 289099100, now seen corresponding path program 20 times [2024-06-21 15:45:19,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:45:19,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54323379] [2024-06-21 15:45:19,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:45:19,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:45:19,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:45:19,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:45:19,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:45:19,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54323379] [2024-06-21 15:45:19,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54323379] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:45:19,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:45:19,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:45:19,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260033998] [2024-06-21 15:45:19,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:45:19,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:45:19,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:45:19,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:45:19,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:45:19,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:45:19,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 285 transitions, 3847 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:45:19,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:45:19,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:45:19,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:45:20,499 INFO L124 PetriNetUnfolderBase]: 773/1399 cut-off events. [2024-06-21 15:45:20,499 INFO L125 PetriNetUnfolderBase]: For 93216/93216 co-relation queries the response was YES. [2024-06-21 15:45:20,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10126 conditions, 1399 events. 773/1399 cut-off events. For 93216/93216 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 7701 event pairs, 118 based on Foata normal form. 2/1397 useless extension candidates. Maximal degree in co-relation 9969. Up to 1157 conditions per place. [2024-06-21 15:45:20,513 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 231 selfloop transitions, 67 changer transitions 0/300 dead transitions. [2024-06-21 15:45:20,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 300 transitions, 4523 flow [2024-06-21 15:45:20,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:45:20,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:45:20,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-21 15:45:20,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-21 15:45:20,513 INFO L175 Difference]: Start difference. First operand has 335 places, 285 transitions, 3847 flow. Second operand 9 states and 99 transitions. [2024-06-21 15:45:20,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 300 transitions, 4523 flow [2024-06-21 15:45:20,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 300 transitions, 4408 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-21 15:45:20,946 INFO L231 Difference]: Finished difference. Result has 336 places, 286 transitions, 3910 flow [2024-06-21 15:45:20,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3732, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3910, PETRI_PLACES=336, PETRI_TRANSITIONS=286} [2024-06-21 15:45:20,946 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 306 predicate places. [2024-06-21 15:45:20,946 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 286 transitions, 3910 flow [2024-06-21 15:45:20,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:45:20,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:45:20,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:45:20,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-21 15:45:20,947 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)] === [2024-06-21 15:45:20,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:45:20,947 INFO L85 PathProgramCache]: Analyzing trace with hash 289106044, now seen corresponding path program 5 times [2024-06-21 15:45:20,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:45:20,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469946516] [2024-06-21 15:45:20,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:45:20,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:45:20,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:45:22,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:45:22,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:45:22,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469946516] [2024-06-21 15:45:22,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469946516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:45:22,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:45:22,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:45:22,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478975458] [2024-06-21 15:45:22,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:45:22,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:45:22,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:45:22,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:45:22,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:45:22,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:45:22,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 286 transitions, 3910 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:45:22,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:45:22,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:45:22,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:45:22,583 INFO L124 PetriNetUnfolderBase]: 779/1409 cut-off events. [2024-06-21 15:45:22,584 INFO L125 PetriNetUnfolderBase]: For 95895/95895 co-relation queries the response was YES. [2024-06-21 15:45:22,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10268 conditions, 1409 events. 779/1409 cut-off events. For 95895/95895 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 7747 event pairs, 116 based on Foata normal form. 2/1407 useless extension candidates. Maximal degree in co-relation 10113. Up to 1147 conditions per place. [2024-06-21 15:45:22,599 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 229 selfloop transitions, 73 changer transitions 0/304 dead transitions. [2024-06-21 15:45:22,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 304 transitions, 4638 flow [2024-06-21 15:45:22,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:45:22,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:45:22,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-21 15:45:22,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-21 15:45:22,600 INFO L175 Difference]: Start difference. First operand has 336 places, 286 transitions, 3910 flow. Second operand 10 states and 109 transitions. [2024-06-21 15:45:22,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 304 transitions, 4638 flow [2024-06-21 15:45:23,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 304 transitions, 4472 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-21 15:45:23,128 INFO L231 Difference]: Finished difference. Result has 339 places, 288 transitions, 3970 flow [2024-06-21 15:45:23,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3744, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3970, PETRI_PLACES=339, PETRI_TRANSITIONS=288} [2024-06-21 15:45:23,128 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 309 predicate places. [2024-06-21 15:45:23,129 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 288 transitions, 3970 flow [2024-06-21 15:45:23,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:45:23,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:45:23,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:45:23,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-21 15:45:23,129 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)] === [2024-06-21 15:45:23,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:45:23,129 INFO L85 PathProgramCache]: Analyzing trace with hash 289345364, now seen corresponding path program 2 times [2024-06-21 15:45:23,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:45:23,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370961731] [2024-06-21 15:45:23,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:45:23,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:45:23,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:45:24,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:45:24,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:45:24,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370961731] [2024-06-21 15:45:24,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370961731] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:45:24,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:45:24,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:45:24,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98540056] [2024-06-21 15:45:24,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:45:24,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:45:24,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:45:24,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:45:24,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:45:24,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:45:24,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 288 transitions, 3970 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:45:24,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:45:24,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:45:24,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:45:25,238 INFO L124 PetriNetUnfolderBase]: 803/1461 cut-off events. [2024-06-21 15:45:25,238 INFO L125 PetriNetUnfolderBase]: For 133162/133162 co-relation queries the response was YES. [2024-06-21 15:45:25,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10536 conditions, 1461 events. 803/1461 cut-off events. For 133162/133162 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 8116 event pairs, 140 based on Foata normal form. 14/1471 useless extension candidates. Maximal degree in co-relation 10380. Up to 1169 conditions per place. [2024-06-21 15:45:25,254 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 241 selfloop transitions, 59 changer transitions 9/311 dead transitions. [2024-06-21 15:45:25,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 311 transitions, 4750 flow [2024-06-21 15:45:25,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:45:25,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:45:25,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-21 15:45:25,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-21 15:45:25,256 INFO L175 Difference]: Start difference. First operand has 339 places, 288 transitions, 3970 flow. Second operand 11 states and 124 transitions. [2024-06-21 15:45:25,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 311 transitions, 4750 flow [2024-06-21 15:45:25,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 311 transitions, 4552 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-21 15:45:25,728 INFO L231 Difference]: Finished difference. Result has 343 places, 287 transitions, 3906 flow [2024-06-21 15:45:25,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3772, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3906, PETRI_PLACES=343, PETRI_TRANSITIONS=287} [2024-06-21 15:45:25,728 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 313 predicate places. [2024-06-21 15:45:25,728 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 287 transitions, 3906 flow [2024-06-21 15:45:25,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:45:25,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:45:25,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:45:25,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-21 15:45:25,728 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)] === [2024-06-21 15:45:25,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:45:25,729 INFO L85 PathProgramCache]: Analyzing trace with hash 116616154, now seen corresponding path program 6 times [2024-06-21 15:45:25,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:45:25,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145820897] [2024-06-21 15:45:25,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:45:25,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:45:25,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:45:26,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:45:26,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:45:26,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145820897] [2024-06-21 15:45:26,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145820897] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:45:26,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:45:26,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 15:45:26,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045803590] [2024-06-21 15:45:26,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:45:26,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 15:45:26,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:45:26,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 15:45:26,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 15:45:26,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:45:26,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 287 transitions, 3906 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:45:26,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:45:26,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:45:26,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:45:27,157 INFO L124 PetriNetUnfolderBase]: 797/1451 cut-off events. [2024-06-21 15:45:27,157 INFO L125 PetriNetUnfolderBase]: For 98266/98266 co-relation queries the response was YES. [2024-06-21 15:45:27,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10466 conditions, 1451 events. 797/1451 cut-off events. For 98266/98266 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 8069 event pairs, 154 based on Foata normal form. 2/1449 useless extension candidates. Maximal degree in co-relation 10309. Up to 1276 conditions per place. [2024-06-21 15:45:27,176 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 247 selfloop transitions, 56 changer transitions 0/305 dead transitions. [2024-06-21 15:45:27,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 305 transitions, 4652 flow [2024-06-21 15:45:27,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:45:27,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:45:27,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-21 15:45:27,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-21 15:45:27,177 INFO L175 Difference]: Start difference. First operand has 343 places, 287 transitions, 3906 flow. Second operand 9 states and 102 transitions. [2024-06-21 15:45:27,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 305 transitions, 4652 flow [2024-06-21 15:45:27,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 305 transitions, 4510 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-21 15:45:27,727 INFO L231 Difference]: Finished difference. Result has 343 places, 289 transitions, 3964 flow [2024-06-21 15:45:27,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3764, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3964, PETRI_PLACES=343, PETRI_TRANSITIONS=289} [2024-06-21 15:45:27,727 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 313 predicate places. [2024-06-21 15:45:27,727 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 289 transitions, 3964 flow [2024-06-21 15:45:27,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:45:27,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:45:27,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:45:27,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-21 15:45:27,728 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)] === [2024-06-21 15:45:27,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:45:27,728 INFO L85 PathProgramCache]: Analyzing trace with hash 289345054, now seen corresponding path program 7 times [2024-06-21 15:45:27,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:45:27,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602697690] [2024-06-21 15:45:27,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:45:27,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:45:27,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:45:28,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:45:28,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:45:28,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602697690] [2024-06-21 15:45:28,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602697690] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:45:28,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:45:28,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:45:28,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037330524] [2024-06-21 15:45:28,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:45:28,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:45:28,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:45:28,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:45:28,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:45:28,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:45:28,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 289 transitions, 3964 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:45:28,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:45:28,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:45:28,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:45:29,481 INFO L124 PetriNetUnfolderBase]: 808/1469 cut-off events. [2024-06-21 15:45:29,481 INFO L125 PetriNetUnfolderBase]: For 102606/102606 co-relation queries the response was YES. [2024-06-21 15:45:29,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10747 conditions, 1469 events. 808/1469 cut-off events. For 102606/102606 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 8197 event pairs, 118 based on Foata normal form. 2/1467 useless extension candidates. Maximal degree in co-relation 10589. Up to 1047 conditions per place. [2024-06-21 15:45:29,499 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 199 selfloop transitions, 111 changer transitions 0/312 dead transitions. [2024-06-21 15:45:29,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 312 transitions, 4964 flow [2024-06-21 15:45:29,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:45:29,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:45:29,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-21 15:45:29,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-21 15:45:29,500 INFO L175 Difference]: Start difference. First operand has 343 places, 289 transitions, 3964 flow. Second operand 11 states and 121 transitions. [2024-06-21 15:45:29,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 312 transitions, 4964 flow [2024-06-21 15:45:30,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 312 transitions, 4812 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-21 15:45:30,007 INFO L231 Difference]: Finished difference. Result has 347 places, 293 transitions, 4203 flow [2024-06-21 15:45:30,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3812, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4203, PETRI_PLACES=347, PETRI_TRANSITIONS=293} [2024-06-21 15:45:30,007 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 317 predicate places. [2024-06-21 15:45:30,007 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 293 transitions, 4203 flow [2024-06-21 15:45:30,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:45:30,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:45:30,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:45:30,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-21 15:45:30,008 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)] === [2024-06-21 15:45:30,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:45:30,008 INFO L85 PathProgramCache]: Analyzing trace with hash 282670010, now seen corresponding path program 21 times [2024-06-21 15:45:30,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:45:30,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956507001] [2024-06-21 15:45:30,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:45:30,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:45:30,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:45:30,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:45:30,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:45:30,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956507001] [2024-06-21 15:45:30,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956507001] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:45:30,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:45:30,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:45:30,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028040153] [2024-06-21 15:45:30,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:45:30,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:45:30,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:45:30,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:45:30,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:45:30,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:45:30,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 293 transitions, 4203 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:45:30,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:45:30,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:45:30,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:45:31,315 INFO L124 PetriNetUnfolderBase]: 812/1477 cut-off events. [2024-06-21 15:45:31,315 INFO L125 PetriNetUnfolderBase]: For 105114/105114 co-relation queries the response was YES. [2024-06-21 15:45:31,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11005 conditions, 1477 events. 812/1477 cut-off events. For 105114/105114 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 8259 event pairs, 130 based on Foata normal form. 2/1475 useless extension candidates. Maximal degree in co-relation 10846. Up to 1290 conditions per place. [2024-06-21 15:45:31,333 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 253 selfloop transitions, 53 changer transitions 0/308 dead transitions. [2024-06-21 15:45:31,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 308 transitions, 4895 flow [2024-06-21 15:45:31,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:45:31,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:45:31,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-21 15:45:31,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-21 15:45:31,334 INFO L175 Difference]: Start difference. First operand has 347 places, 293 transitions, 4203 flow. Second operand 9 states and 98 transitions. [2024-06-21 15:45:31,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 308 transitions, 4895 flow [2024-06-21 15:45:31,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 308 transitions, 4700 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-06-21 15:45:31,927 INFO L231 Difference]: Finished difference. Result has 349 places, 294 transitions, 4158 flow [2024-06-21 15:45:31,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4008, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4158, PETRI_PLACES=349, PETRI_TRANSITIONS=294} [2024-06-21 15:45:31,928 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 319 predicate places. [2024-06-21 15:45:31,928 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 294 transitions, 4158 flow [2024-06-21 15:45:31,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:45:31,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:45:31,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:45:31,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-21 15:45:31,929 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)] === [2024-06-21 15:45:31,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:45:31,929 INFO L85 PathProgramCache]: Analyzing trace with hash 282665360, now seen corresponding path program 22 times [2024-06-21 15:45:31,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:45:31,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600281187] [2024-06-21 15:45:31,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:45:31,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:45:31,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:45:32,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:45:32,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:45:32,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600281187] [2024-06-21 15:45:32,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600281187] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:45:32,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:45:32,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:45:32,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206270033] [2024-06-21 15:45:32,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:45:32,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:45:32,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:45:32,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:45:32,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:45:32,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:45:32,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 294 transitions, 4158 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:45:32,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:45:32,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:45:32,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:45:33,331 INFO L124 PetriNetUnfolderBase]: 816/1485 cut-off events. [2024-06-21 15:45:33,331 INFO L125 PetriNetUnfolderBase]: For 106868/106868 co-relation queries the response was YES. [2024-06-21 15:45:33,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11062 conditions, 1485 events. 816/1485 cut-off events. For 106868/106868 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 8325 event pairs, 126 based on Foata normal form. 2/1483 useless extension candidates. Maximal degree in co-relation 10901. Up to 1298 conditions per place. [2024-06-21 15:45:33,344 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 256 selfloop transitions, 51 changer transitions 0/309 dead transitions. [2024-06-21 15:45:33,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 309 transitions, 4850 flow [2024-06-21 15:45:33,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:45:33,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:45:33,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-21 15:45:33,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-21 15:45:33,345 INFO L175 Difference]: Start difference. First operand has 349 places, 294 transitions, 4158 flow. Second operand 9 states and 97 transitions. [2024-06-21 15:45:33,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 309 transitions, 4850 flow [2024-06-21 15:45:33,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 309 transitions, 4710 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-21 15:45:33,886 INFO L231 Difference]: Finished difference. Result has 351 places, 295 transitions, 4166 flow [2024-06-21 15:45:33,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4020, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4166, PETRI_PLACES=351, PETRI_TRANSITIONS=295} [2024-06-21 15:45:33,887 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 321 predicate places. [2024-06-21 15:45:33,887 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 295 transitions, 4166 flow [2024-06-21 15:45:33,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:45:33,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:45:33,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:45:33,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-21 15:45:33,888 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)] === [2024-06-21 15:45:33,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:45:33,888 INFO L85 PathProgramCache]: Analyzing trace with hash 282849934, now seen corresponding path program 8 times [2024-06-21 15:45:33,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:45:33,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299329491] [2024-06-21 15:45:33,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:45:33,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:45:33,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:45:34,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:45:34,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:45:34,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299329491] [2024-06-21 15:45:34,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299329491] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:45:34,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:45:34,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:45:34,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279615547] [2024-06-21 15:45:34,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:45:34,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:45:34,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:45:34,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:45:34,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:45:34,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:45:34,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 295 transitions, 4166 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:45:34,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:45:34,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:45:34,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:45:35,491 INFO L124 PetriNetUnfolderBase]: 812/1479 cut-off events. [2024-06-21 15:45:35,491 INFO L125 PetriNetUnfolderBase]: For 99497/99497 co-relation queries the response was YES. [2024-06-21 15:45:35,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10778 conditions, 1479 events. 812/1479 cut-off events. For 99497/99497 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 8300 event pairs, 130 based on Foata normal form. 2/1477 useless extension candidates. Maximal degree in co-relation 10616. Up to 1272 conditions per place. [2024-06-21 15:45:35,506 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 250 selfloop transitions, 59 changer transitions 0/311 dead transitions. [2024-06-21 15:45:35,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 311 transitions, 4840 flow [2024-06-21 15:45:35,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:45:35,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:45:35,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-21 15:45:35,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-21 15:45:35,510 INFO L175 Difference]: Start difference. First operand has 351 places, 295 transitions, 4166 flow. Second operand 10 states and 108 transitions. [2024-06-21 15:45:35,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 311 transitions, 4840 flow [2024-06-21 15:45:36,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 311 transitions, 4678 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-21 15:45:36,056 INFO L231 Difference]: Finished difference. Result has 354 places, 295 transitions, 4130 flow [2024-06-21 15:45:36,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4004, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4130, PETRI_PLACES=354, PETRI_TRANSITIONS=295} [2024-06-21 15:45:36,057 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 324 predicate places. [2024-06-21 15:45:36,057 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 295 transitions, 4130 flow [2024-06-21 15:45:36,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:45:36,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:45:36,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:45:36,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-21 15:45:36,057 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)] === [2024-06-21 15:45:36,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:45:36,058 INFO L85 PathProgramCache]: Analyzing trace with hash -393219096, now seen corresponding path program 9 times [2024-06-21 15:45:36,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:45:36,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249469381] [2024-06-21 15:45:36,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:45:36,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:45:36,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:45:36,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:45:36,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:45:36,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249469381] [2024-06-21 15:45:36,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249469381] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:45:36,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:45:36,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 15:45:36,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766824657] [2024-06-21 15:45:36,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:45:36,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 15:45:36,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:45:36,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 15:45:36,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 15:45:36,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:45:36,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 295 transitions, 4130 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:45:36,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:45:36,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:45:36,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:45:37,447 INFO L124 PetriNetUnfolderBase]: 818/1487 cut-off events. [2024-06-21 15:45:37,447 INFO L125 PetriNetUnfolderBase]: For 99192/99192 co-relation queries the response was YES. [2024-06-21 15:45:37,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10803 conditions, 1487 events. 818/1487 cut-off events. For 99192/99192 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 8339 event pairs, 286 based on Foata normal form. 2/1488 useless extension candidates. Maximal degree in co-relation 10640. Up to 1421 conditions per place. [2024-06-21 15:45:37,461 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 283 selfloop transitions, 27 changer transitions 0/312 dead transitions. [2024-06-21 15:45:37,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 312 transitions, 5025 flow [2024-06-21 15:45:37,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:45:37,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:45:37,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-21 15:45:37,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-21 15:45:37,463 INFO L175 Difference]: Start difference. First operand has 354 places, 295 transitions, 4130 flow. Second operand 10 states and 106 transitions. [2024-06-21 15:45:37,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 312 transitions, 5025 flow [2024-06-21 15:45:37,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 312 transitions, 4887 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-21 15:45:37,974 INFO L231 Difference]: Finished difference. Result has 357 places, 300 transitions, 4137 flow [2024-06-21 15:45:37,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3992, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4137, PETRI_PLACES=357, PETRI_TRANSITIONS=300} [2024-06-21 15:45:37,974 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 327 predicate places. [2024-06-21 15:45:37,974 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 300 transitions, 4137 flow [2024-06-21 15:45:37,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:45:37,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:45:37,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:45:37,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-21 15:45:37,974 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)] === [2024-06-21 15:45:37,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:45:37,975 INFO L85 PathProgramCache]: Analyzing trace with hash -393210416, now seen corresponding path program 3 times [2024-06-21 15:45:37,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:45:37,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125849331] [2024-06-21 15:45:37,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:45:37,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:45:37,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:45:39,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:45:39,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:45:39,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125849331] [2024-06-21 15:45:39,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125849331] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:45:39,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:45:39,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:45:39,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138035527] [2024-06-21 15:45:39,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:45:39,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:45:39,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:45:39,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:45:39,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:45:39,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:45:39,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 300 transitions, 4137 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:45:39,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:45:39,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:45:39,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:45:40,091 INFO L124 PetriNetUnfolderBase]: 822/1495 cut-off events. [2024-06-21 15:45:40,091 INFO L125 PetriNetUnfolderBase]: For 101589/101589 co-relation queries the response was YES. [2024-06-21 15:45:40,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10915 conditions, 1495 events. 822/1495 cut-off events. For 101589/101589 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 8401 event pairs, 287 based on Foata normal form. 2/1496 useless extension candidates. Maximal degree in co-relation 10750. Up to 1450 conditions per place. [2024-06-21 15:45:40,109 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 290 selfloop transitions, 21 changer transitions 0/313 dead transitions. [2024-06-21 15:45:40,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 313 transitions, 4821 flow [2024-06-21 15:45:40,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 15:45:40,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 15:45:40,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 112 transitions. [2024-06-21 15:45:40,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3010752688172043 [2024-06-21 15:45:40,110 INFO L175 Difference]: Start difference. First operand has 357 places, 300 transitions, 4137 flow. Second operand 12 states and 112 transitions. [2024-06-21 15:45:40,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 313 transitions, 4821 flow [2024-06-21 15:45:40,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 313 transitions, 4743 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-21 15:45:40,660 INFO L231 Difference]: Finished difference. Result has 364 places, 301 transitions, 4144 flow [2024-06-21 15:45:40,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4059, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4144, PETRI_PLACES=364, PETRI_TRANSITIONS=301} [2024-06-21 15:45:40,660 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 334 predicate places. [2024-06-21 15:45:40,660 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 301 transitions, 4144 flow [2024-06-21 15:45:40,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:45:40,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:45:40,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:45:40,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-21 15:45:40,661 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)] === [2024-06-21 15:45:40,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:45:40,661 INFO L85 PathProgramCache]: Analyzing trace with hash -2130188932, now seen corresponding path program 10 times [2024-06-21 15:45:40,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:45:40,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541559827] [2024-06-21 15:45:40,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:45:40,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:45:40,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:45:41,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:45:41,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:45:41,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541559827] [2024-06-21 15:45:41,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541559827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:45:41,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:45:41,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:45:41,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954588540] [2024-06-21 15:45:41,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:45:41,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:45:41,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:45:41,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:45:41,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:45:41,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:45:41,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 301 transitions, 4144 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:45:41,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:45:41,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:45:41,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:45:42,113 INFO L124 PetriNetUnfolderBase]: 818/1489 cut-off events. [2024-06-21 15:45:42,113 INFO L125 PetriNetUnfolderBase]: For 96298/96298 co-relation queries the response was YES. [2024-06-21 15:45:42,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10657 conditions, 1489 events. 818/1489 cut-off events. For 96298/96298 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 8362 event pairs, 285 based on Foata normal form. 2/1490 useless extension candidates. Maximal degree in co-relation 10490. Up to 1426 conditions per place. [2024-06-21 15:45:42,132 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 282 selfloop transitions, 27 changer transitions 0/311 dead transitions. [2024-06-21 15:45:42,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 311 transitions, 4790 flow [2024-06-21 15:45:42,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:45:42,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:45:42,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-21 15:45:42,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32903225806451614 [2024-06-21 15:45:42,133 INFO L175 Difference]: Start difference. First operand has 364 places, 301 transitions, 4144 flow. Second operand 10 states and 102 transitions. [2024-06-21 15:45:42,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 311 transitions, 4790 flow [2024-06-21 15:45:42,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 311 transitions, 4653 flow, removed 32 selfloop flow, removed 12 redundant places. [2024-06-21 15:45:42,648 INFO L231 Difference]: Finished difference. Result has 362 places, 301 transitions, 4070 flow [2024-06-21 15:45:42,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4007, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4070, PETRI_PLACES=362, PETRI_TRANSITIONS=301} [2024-06-21 15:45:42,649 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 332 predicate places. [2024-06-21 15:45:42,649 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 301 transitions, 4070 flow [2024-06-21 15:45:42,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:45:42,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:45:42,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:45:42,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-21 15:45:42,650 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)] === [2024-06-21 15:45:42,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:45:42,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1241637680, now seen corresponding path program 4 times [2024-06-21 15:45:42,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:45:42,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501295819] [2024-06-21 15:45:42,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:45:42,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:45:42,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:45:43,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:45:43,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:45:43,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501295819] [2024-06-21 15:45:43,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501295819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:45:43,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:45:43,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:45:43,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607267450] [2024-06-21 15:45:43,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:45:43,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:45:43,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:45:43,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:45:43,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:45:43,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:45:43,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 301 transitions, 4070 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:45:43,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:45:43,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:45:43,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:45:44,312 INFO L124 PetriNetUnfolderBase]: 822/1497 cut-off events. [2024-06-21 15:45:44,312 INFO L125 PetriNetUnfolderBase]: For 97746/97746 co-relation queries the response was YES. [2024-06-21 15:45:44,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10638 conditions, 1497 events. 822/1497 cut-off events. For 97746/97746 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 8424 event pairs, 171 based on Foata normal form. 2/1495 useless extension candidates. Maximal degree in co-relation 10473. Up to 1369 conditions per place. [2024-06-21 15:45:44,329 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 267 selfloop transitions, 43 changer transitions 0/312 dead transitions. [2024-06-21 15:45:44,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 312 transitions, 4750 flow [2024-06-21 15:45:44,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:45:44,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:45:44,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-21 15:45:44,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33225806451612905 [2024-06-21 15:45:44,331 INFO L175 Difference]: Start difference. First operand has 362 places, 301 transitions, 4070 flow. Second operand 10 states and 103 transitions. [2024-06-21 15:45:44,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 312 transitions, 4750 flow [2024-06-21 15:45:44,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 312 transitions, 4689 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-21 15:45:44,882 INFO L231 Difference]: Finished difference. Result has 363 places, 302 transitions, 4139 flow [2024-06-21 15:45:44,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4009, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4139, PETRI_PLACES=363, PETRI_TRANSITIONS=302} [2024-06-21 15:45:44,882 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 333 predicate places. [2024-06-21 15:45:44,882 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 302 transitions, 4139 flow [2024-06-21 15:45:44,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:45:44,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:45:44,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:45:44,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-21 15:45:44,883 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)] === [2024-06-21 15:45:44,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:45:44,883 INFO L85 PathProgramCache]: Analyzing trace with hash 149869130, now seen corresponding path program 5 times [2024-06-21 15:45:44,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:45:44,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547368734] [2024-06-21 15:45:44,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:45:44,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:45:44,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:45:45,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:45:45,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:45:45,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547368734] [2024-06-21 15:45:45,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547368734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:45:45,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:45:45,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:45:45,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208504047] [2024-06-21 15:45:45,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:45:45,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:45:45,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:45:45,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:45:45,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:45:45,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:45:45,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 302 transitions, 4139 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:45:45,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:45:45,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:45:45,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:45:46,451 INFO L124 PetriNetUnfolderBase]: 826/1505 cut-off events. [2024-06-21 15:45:46,451 INFO L125 PetriNetUnfolderBase]: For 101024/101024 co-relation queries the response was YES. [2024-06-21 15:45:46,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10794 conditions, 1505 events. 826/1505 cut-off events. For 101024/101024 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 8488 event pairs, 284 based on Foata normal form. 2/1506 useless extension candidates. Maximal degree in co-relation 10628. Up to 1446 conditions per place. [2024-06-21 15:45:46,470 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 292 selfloop transitions, 21 changer transitions 0/315 dead transitions. [2024-06-21 15:45:46,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 315 transitions, 4831 flow [2024-06-21 15:45:46,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:45:46,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:45:46,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 105 transitions. [2024-06-21 15:45:46,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30791788856304986 [2024-06-21 15:45:46,471 INFO L175 Difference]: Start difference. First operand has 363 places, 302 transitions, 4139 flow. Second operand 11 states and 105 transitions. [2024-06-21 15:45:46,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 315 transitions, 4831 flow [2024-06-21 15:45:47,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 315 transitions, 4711 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-21 15:45:47,024 INFO L231 Difference]: Finished difference. Result has 366 places, 303 transitions, 4107 flow [2024-06-21 15:45:47,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4019, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4107, PETRI_PLACES=366, PETRI_TRANSITIONS=303} [2024-06-21 15:45:47,024 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 336 predicate places. [2024-06-21 15:45:47,024 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 303 transitions, 4107 flow [2024-06-21 15:45:47,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:45:47,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:45:47,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:45:47,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-21 15:45:47,025 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)] === [2024-06-21 15:45:47,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:45:47,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1879432540, now seen corresponding path program 23 times [2024-06-21 15:45:47,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:45:47,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283573032] [2024-06-21 15:45:47,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:45:47,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:45:47,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:45:47,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:45:47,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:45:47,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283573032] [2024-06-21 15:45:47,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283573032] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:45:47,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:45:47,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:45:47,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843673983] [2024-06-21 15:45:47,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:45:47,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:45:47,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:45:47,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:45:47,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:45:47,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:45:47,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 303 transitions, 4107 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:45:47,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:45:47,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:45:47,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:45:48,306 INFO L124 PetriNetUnfolderBase]: 830/1513 cut-off events. [2024-06-21 15:45:48,306 INFO L125 PetriNetUnfolderBase]: For 102946/102946 co-relation queries the response was YES. [2024-06-21 15:45:48,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10792 conditions, 1513 events. 830/1513 cut-off events. For 102946/102946 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 8573 event pairs, 285 based on Foata normal form. 2/1514 useless extension candidates. Maximal degree in co-relation 10625. Up to 1476 conditions per place. [2024-06-21 15:45:48,321 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 297 selfloop transitions, 15 changer transitions 0/314 dead transitions. [2024-06-21 15:45:48,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 314 transitions, 4795 flow [2024-06-21 15:45:48,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:45:48,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:45:48,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 89 transitions. [2024-06-21 15:45:48,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31899641577060933 [2024-06-21 15:45:48,322 INFO L175 Difference]: Start difference. First operand has 366 places, 303 transitions, 4107 flow. Second operand 9 states and 89 transitions. [2024-06-21 15:45:48,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 314 transitions, 4795 flow [2024-06-21 15:45:48,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 314 transitions, 4717 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-21 15:45:48,827 INFO L231 Difference]: Finished difference. Result has 366 places, 304 transitions, 4101 flow [2024-06-21 15:45:48,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4029, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4101, PETRI_PLACES=366, PETRI_TRANSITIONS=304} [2024-06-21 15:45:48,828 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 336 predicate places. [2024-06-21 15:45:48,828 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 304 transitions, 4101 flow [2024-06-21 15:45:48,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:45:48,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:45:48,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:45:48,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-21 15:45:48,828 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)] === [2024-06-21 15:45:48,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:45:48,828 INFO L85 PathProgramCache]: Analyzing trace with hash -678310286, now seen corresponding path program 6 times [2024-06-21 15:45:48,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:45:48,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218757737] [2024-06-21 15:45:48,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:45:48,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:45:48,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:45:49,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:45:49,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:45:49,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218757737] [2024-06-21 15:45:49,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218757737] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:45:49,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:45:49,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:45:49,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535818029] [2024-06-21 15:45:49,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:45:49,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:45:49,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:45:49,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:45:49,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:45:49,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:45:49,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 304 transitions, 4101 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:45:49,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:45:49,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:45:49,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:45:50,376 INFO L124 PetriNetUnfolderBase]: 834/1521 cut-off events. [2024-06-21 15:45:50,376 INFO L125 PetriNetUnfolderBase]: For 105193/105193 co-relation queries the response was YES. [2024-06-21 15:45:50,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10833 conditions, 1521 events. 834/1521 cut-off events. For 105193/105193 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 8620 event pairs, 286 based on Foata normal form. 2/1522 useless extension candidates. Maximal degree in co-relation 10665. Up to 1469 conditions per place. [2024-06-21 15:45:50,390 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 289 selfloop transitions, 25 changer transitions 0/316 dead transitions. [2024-06-21 15:45:50,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 316 transitions, 4795 flow [2024-06-21 15:45:50,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:45:50,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:45:50,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 108 transitions. [2024-06-21 15:45:50,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31671554252199413 [2024-06-21 15:45:50,391 INFO L175 Difference]: Start difference. First operand has 366 places, 304 transitions, 4101 flow. Second operand 11 states and 108 transitions. [2024-06-21 15:45:50,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 316 transitions, 4795 flow [2024-06-21 15:45:50,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 316 transitions, 4733 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-21 15:45:50,956 INFO L231 Difference]: Finished difference. Result has 370 places, 305 transitions, 4137 flow [2024-06-21 15:45:50,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4039, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4137, PETRI_PLACES=370, PETRI_TRANSITIONS=305} [2024-06-21 15:45:50,957 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 340 predicate places. [2024-06-21 15:45:50,957 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 305 transitions, 4137 flow [2024-06-21 15:45:50,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:45:50,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:45:50,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:45:50,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-21 15:45:50,957 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)] === [2024-06-21 15:45:50,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:45:50,957 INFO L85 PathProgramCache]: Analyzing trace with hash 486037168, now seen corresponding path program 24 times [2024-06-21 15:45:50,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:45:50,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933097515] [2024-06-21 15:45:50,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:45:50,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:45:50,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:45:51,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:45:51,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:45:51,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933097515] [2024-06-21 15:45:51,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933097515] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:45:51,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:45:51,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:45:51,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451349082] [2024-06-21 15:45:51,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:45:51,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:45:51,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:45:51,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:45:51,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:45:51,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:45:51,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 305 transitions, 4137 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:45:51,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:45:51,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:45:51,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:45:52,264 INFO L124 PetriNetUnfolderBase]: 838/1529 cut-off events. [2024-06-21 15:45:52,264 INFO L125 PetriNetUnfolderBase]: For 107038/107038 co-relation queries the response was YES. [2024-06-21 15:45:52,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10908 conditions, 1529 events. 838/1529 cut-off events. For 107038/107038 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 8684 event pairs, 141 based on Foata normal form. 2/1527 useless extension candidates. Maximal degree in co-relation 10739. Up to 1331 conditions per place. [2024-06-21 15:45:52,282 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 262 selfloop transitions, 54 changer transitions 0/318 dead transitions. [2024-06-21 15:45:52,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 318 transitions, 4851 flow [2024-06-21 15:45:52,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:45:52,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:45:52,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-21 15:45:52,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-21 15:45:52,283 INFO L175 Difference]: Start difference. First operand has 370 places, 305 transitions, 4137 flow. Second operand 9 states and 96 transitions. [2024-06-21 15:45:52,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 318 transitions, 4851 flow [2024-06-21 15:45:52,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 318 transitions, 4755 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-21 15:45:52,963 INFO L231 Difference]: Finished difference. Result has 370 places, 306 transitions, 4193 flow [2024-06-21 15:45:52,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4041, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4193, PETRI_PLACES=370, PETRI_TRANSITIONS=306} [2024-06-21 15:45:52,963 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 340 predicate places. [2024-06-21 15:45:52,963 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 306 transitions, 4193 flow [2024-06-21 15:45:52,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:45:52,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:45:52,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:45:52,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-21 15:45:52,964 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)] === [2024-06-21 15:45:52,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:45:52,964 INFO L85 PathProgramCache]: Analyzing trace with hash -678318966, now seen corresponding path program 11 times [2024-06-21 15:45:52,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:45:52,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409805665] [2024-06-21 15:45:52,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:45:52,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:45:52,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:45:54,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:45:54,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:45:54,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409805665] [2024-06-21 15:45:54,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409805665] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:45:54,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:45:54,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:45:54,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282466876] [2024-06-21 15:45:54,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:45:54,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:45:54,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:45:54,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:45:54,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:45:54,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:45:54,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 306 transitions, 4193 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:45:54,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:45:54,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:45:54,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:45:55,081 INFO L124 PetriNetUnfolderBase]: 844/1539 cut-off events. [2024-06-21 15:45:55,082 INFO L125 PetriNetUnfolderBase]: For 109385/109385 co-relation queries the response was YES. [2024-06-21 15:45:55,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11033 conditions, 1539 events. 844/1539 cut-off events. For 109385/109385 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 8738 event pairs, 134 based on Foata normal form. 2/1537 useless extension candidates. Maximal degree in co-relation 10862. Up to 889 conditions per place. [2024-06-21 15:45:55,099 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 181 selfloop transitions, 141 changer transitions 0/324 dead transitions. [2024-06-21 15:45:55,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 324 transitions, 5143 flow [2024-06-21 15:45:55,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:45:55,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:45:55,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-21 15:45:55,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-21 15:45:55,100 INFO L175 Difference]: Start difference. First operand has 370 places, 306 transitions, 4193 flow. Second operand 10 states and 116 transitions. [2024-06-21 15:45:55,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 324 transitions, 5143 flow [2024-06-21 15:45:55,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 324 transitions, 5001 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-21 15:45:55,804 INFO L231 Difference]: Finished difference. Result has 373 places, 308 transitions, 4392 flow [2024-06-21 15:45:55,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4051, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4392, PETRI_PLACES=373, PETRI_TRANSITIONS=308} [2024-06-21 15:45:55,805 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 343 predicate places. [2024-06-21 15:45:55,805 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 308 transitions, 4392 flow [2024-06-21 15:45:55,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:45:55,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:45:55,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:45:55,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-21 15:45:55,805 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)] === [2024-06-21 15:45:55,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:45:55,805 INFO L85 PathProgramCache]: Analyzing trace with hash -46571508, now seen corresponding path program 25 times [2024-06-21 15:45:55,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:45:55,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951642890] [2024-06-21 15:45:55,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:45:55,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:45:55,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:45:56,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:45:56,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:45:56,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951642890] [2024-06-21 15:45:56,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951642890] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:45:56,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:45:56,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:45:56,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791776694] [2024-06-21 15:45:56,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:45:56,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:45:56,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:45:56,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:45:56,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:45:56,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:45:56,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 308 transitions, 4392 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:45:56,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:45:56,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:45:56,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:45:57,205 INFO L124 PetriNetUnfolderBase]: 848/1547 cut-off events. [2024-06-21 15:45:57,205 INFO L125 PetriNetUnfolderBase]: For 112568/112568 co-relation queries the response was YES. [2024-06-21 15:45:57,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11312 conditions, 1547 events. 848/1547 cut-off events. For 112568/112568 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 8800 event pairs, 142 based on Foata normal form. 2/1545 useless extension candidates. Maximal degree in co-relation 11140. Up to 1349 conditions per place. [2024-06-21 15:45:57,223 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 266 selfloop transitions, 53 changer transitions 0/321 dead transitions. [2024-06-21 15:45:57,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 321 transitions, 5108 flow [2024-06-21 15:45:57,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:45:57,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:45:57,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-21 15:45:57,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34050179211469533 [2024-06-21 15:45:57,224 INFO L175 Difference]: Start difference. First operand has 373 places, 308 transitions, 4392 flow. Second operand 9 states and 95 transitions. [2024-06-21 15:45:57,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 321 transitions, 5108 flow [2024-06-21 15:45:57,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 321 transitions, 4888 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-21 15:45:57,967 INFO L231 Difference]: Finished difference. Result has 375 places, 309 transitions, 4324 flow [2024-06-21 15:45:57,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4172, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4324, PETRI_PLACES=375, PETRI_TRANSITIONS=309} [2024-06-21 15:45:57,967 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 345 predicate places. [2024-06-21 15:45:57,967 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 309 transitions, 4324 flow [2024-06-21 15:45:57,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:45:57,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:45:57,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:45:57,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-21 15:45:57,968 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)] === [2024-06-21 15:45:57,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:45:57,968 INFO L85 PathProgramCache]: Analyzing trace with hash -678310596, now seen corresponding path program 12 times [2024-06-21 15:45:57,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:45:57,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668514292] [2024-06-21 15:45:57,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:45:57,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:45:57,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:45:58,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:45:58,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:45:58,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668514292] [2024-06-21 15:45:58,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668514292] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:45:58,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:45:58,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:45:58,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050301714] [2024-06-21 15:45:58,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:45:58,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:45:58,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:45:58,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:45:58,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:45:58,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:45:58,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 309 transitions, 4324 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:45:58,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:45:58,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:45:58,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:45:59,738 INFO L124 PetriNetUnfolderBase]: 844/1541 cut-off events. [2024-06-21 15:45:59,738 INFO L125 PetriNetUnfolderBase]: For 105780/105780 co-relation queries the response was YES. [2024-06-21 15:45:59,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10900 conditions, 1541 events. 844/1541 cut-off events. For 105780/105780 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 8775 event pairs, 136 based on Foata normal form. 2/1539 useless extension candidates. Maximal degree in co-relation 10727. Up to 894 conditions per place. [2024-06-21 15:45:59,757 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 183 selfloop transitions, 142 changer transitions 0/327 dead transitions. [2024-06-21 15:45:59,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 327 transitions, 5240 flow [2024-06-21 15:45:59,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:45:59,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:45:59,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-21 15:45:59,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-21 15:45:59,758 INFO L175 Difference]: Start difference. First operand has 375 places, 309 transitions, 4324 flow. Second operand 11 states and 126 transitions. [2024-06-21 15:45:59,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 327 transitions, 5240 flow [2024-06-21 15:46:00,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 327 transitions, 5070 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-21 15:46:00,432 INFO L231 Difference]: Finished difference. Result has 379 places, 309 transitions, 4446 flow [2024-06-21 15:46:00,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4154, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4446, PETRI_PLACES=379, PETRI_TRANSITIONS=309} [2024-06-21 15:46:00,432 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 349 predicate places. [2024-06-21 15:46:00,432 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 309 transitions, 4446 flow [2024-06-21 15:46:00,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:46:00,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:46:00,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:46:00,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-21 15:46:00,433 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)] === [2024-06-21 15:46:00,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:46:00,433 INFO L85 PathProgramCache]: Analyzing trace with hash -40137768, now seen corresponding path program 26 times [2024-06-21 15:46:00,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:46:00,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172457862] [2024-06-21 15:46:00,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:46:00,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:46:00,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:46:01,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:46:01,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:46:01,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172457862] [2024-06-21 15:46:01,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172457862] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:46:01,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:46:01,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 15:46:01,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375768367] [2024-06-21 15:46:01,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:46:01,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 15:46:01,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:46:01,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 15:46:01,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 15:46:01,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:46:01,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 309 transitions, 4446 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:46:01,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:46:01,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:46:01,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:46:01,636 INFO L124 PetriNetUnfolderBase]: 841/1536 cut-off events. [2024-06-21 15:46:01,637 INFO L125 PetriNetUnfolderBase]: For 98840/98840 co-relation queries the response was YES. [2024-06-21 15:46:01,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10818 conditions, 1536 events. 841/1536 cut-off events. For 98840/98840 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 8730 event pairs, 137 based on Foata normal form. 2/1534 useless extension candidates. Maximal degree in co-relation 10644. Up to 1329 conditions per place. [2024-06-21 15:46:01,656 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 263 selfloop transitions, 57 changer transitions 0/322 dead transitions. [2024-06-21 15:46:01,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 322 transitions, 5138 flow [2024-06-21 15:46:01,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:46:01,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:46:01,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-21 15:46:01,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-21 15:46:01,657 INFO L175 Difference]: Start difference. First operand has 379 places, 309 transitions, 4446 flow. Second operand 9 states and 99 transitions. [2024-06-21 15:46:01,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 322 transitions, 5138 flow [2024-06-21 15:46:02,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 322 transitions, 4886 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-21 15:46:02,383 INFO L231 Difference]: Finished difference. Result has 377 places, 309 transitions, 4312 flow [2024-06-21 15:46:02,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4194, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4312, PETRI_PLACES=377, PETRI_TRANSITIONS=309} [2024-06-21 15:46:02,384 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 347 predicate places. [2024-06-21 15:46:02,384 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 309 transitions, 4312 flow [2024-06-21 15:46:02,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:46:02,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:46:02,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:46:02,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-21 15:46:02,384 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)] === [2024-06-21 15:46:02,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:46:02,385 INFO L85 PathProgramCache]: Analyzing trace with hash -46386934, now seen corresponding path program 13 times [2024-06-21 15:46:02,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:46:02,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296304869] [2024-06-21 15:46:02,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:46:02,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:46:02,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:46:03,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:46:03,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:46:03,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296304869] [2024-06-21 15:46:03,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296304869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:46:03,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:46:03,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:46:03,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27608674] [2024-06-21 15:46:03,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:46:03,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:46:03,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:46:03,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:46:03,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:46:04,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:46:04,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 309 transitions, 4312 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:46:04,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:46:04,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:46:04,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:46:04,687 INFO L124 PetriNetUnfolderBase]: 847/1546 cut-off events. [2024-06-21 15:46:04,687 INFO L125 PetriNetUnfolderBase]: For 98644/98644 co-relation queries the response was YES. [2024-06-21 15:46:04,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10684 conditions, 1546 events. 847/1546 cut-off events. For 98644/98644 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 8784 event pairs, 142 based on Foata normal form. 2/1544 useless extension candidates. Maximal degree in co-relation 10511. Up to 1338 conditions per place. [2024-06-21 15:46:04,706 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 266 selfloop transitions, 57 changer transitions 0/325 dead transitions. [2024-06-21 15:46:04,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 325 transitions, 5066 flow [2024-06-21 15:46:04,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:46:04,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:46:04,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-21 15:46:04,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-21 15:46:04,707 INFO L175 Difference]: Start difference. First operand has 377 places, 309 transitions, 4312 flow. Second operand 10 states and 106 transitions. [2024-06-21 15:46:04,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 325 transitions, 5066 flow [2024-06-21 15:46:05,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 325 transitions, 4837 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-21 15:46:05,303 INFO L231 Difference]: Finished difference. Result has 379 places, 311 transitions, 4254 flow [2024-06-21 15:46:05,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4083, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4254, PETRI_PLACES=379, PETRI_TRANSITIONS=311} [2024-06-21 15:46:05,303 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 349 predicate places. [2024-06-21 15:46:05,303 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 311 transitions, 4254 flow [2024-06-21 15:46:05,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:46:05,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:46:05,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:46:05,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-21 15:46:05,304 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)] === [2024-06-21 15:46:05,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:46:05,304 INFO L85 PathProgramCache]: Analyzing trace with hash -39891504, now seen corresponding path program 7 times [2024-06-21 15:46:05,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:46:05,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358725176] [2024-06-21 15:46:05,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:46:05,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:46:05,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:46:06,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:46:06,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:46:06,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358725176] [2024-06-21 15:46:06,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358725176] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:46:06,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:46:06,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:46:06,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613886161] [2024-06-21 15:46:06,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:46:06,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:46:06,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:46:06,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:46:06,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:46:06,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:46:06,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 311 transitions, 4254 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:46:06,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:46:06,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:46:06,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:46:07,279 INFO L124 PetriNetUnfolderBase]: 844/1541 cut-off events. [2024-06-21 15:46:07,279 INFO L125 PetriNetUnfolderBase]: For 90643/90643 co-relation queries the response was YES. [2024-06-21 15:46:07,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10290 conditions, 1541 events. 844/1541 cut-off events. For 90643/90643 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 8776 event pairs, 154 based on Foata normal form. 2/1539 useless extension candidates. Maximal degree in co-relation 10116. Up to 1380 conditions per place. [2024-06-21 15:46:07,295 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 262 selfloop transitions, 59 changer transitions 0/323 dead transitions. [2024-06-21 15:46:07,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 323 transitions, 4928 flow [2024-06-21 15:46:07,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:46:07,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:46:07,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-21 15:46:07,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3313782991202346 [2024-06-21 15:46:07,296 INFO L175 Difference]: Start difference. First operand has 379 places, 311 transitions, 4254 flow. Second operand 11 states and 113 transitions. [2024-06-21 15:46:07,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 323 transitions, 4928 flow [2024-06-21 15:46:07,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 323 transitions, 4785 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-21 15:46:07,793 INFO L231 Difference]: Finished difference. Result has 382 places, 311 transitions, 4233 flow [2024-06-21 15:46:07,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4111, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4233, PETRI_PLACES=382, PETRI_TRANSITIONS=311} [2024-06-21 15:46:07,793 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 352 predicate places. [2024-06-21 15:46:07,793 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 311 transitions, 4233 flow [2024-06-21 15:46:07,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:46:07,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:46:07,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:46:07,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-21 15:46:07,794 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)] === [2024-06-21 15:46:07,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:46:07,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1777109030, now seen corresponding path program 14 times [2024-06-21 15:46:07,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:46:07,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931753351] [2024-06-21 15:46:07,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:46:07,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:46:07,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:46:09,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:46:09,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:46:09,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931753351] [2024-06-21 15:46:09,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931753351] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:46:09,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:46:09,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:46:09,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442035321] [2024-06-21 15:46:09,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:46:09,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:46:09,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:46:09,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:46:09,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:46:09,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:46:09,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 311 transitions, 4233 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:46:09,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:46:09,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:46:09,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:46:09,741 INFO L124 PetriNetUnfolderBase]: 840/1535 cut-off events. [2024-06-21 15:46:09,741 INFO L125 PetriNetUnfolderBase]: For 82665/82665 co-relation queries the response was YES. [2024-06-21 15:46:09,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10017 conditions, 1535 events. 840/1535 cut-off events. For 82665/82665 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 8746 event pairs, 136 based on Foata normal form. 2/1533 useless extension candidates. Maximal degree in co-relation 9842. Up to 1280 conditions per place. [2024-06-21 15:46:09,758 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 256 selfloop transitions, 66 changer transitions 0/324 dead transitions. [2024-06-21 15:46:09,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 324 transitions, 4935 flow [2024-06-21 15:46:09,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:46:09,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:46:09,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-21 15:46:09,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-21 15:46:09,759 INFO L175 Difference]: Start difference. First operand has 382 places, 311 transitions, 4233 flow. Second operand 9 states and 105 transitions. [2024-06-21 15:46:09,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 324 transitions, 4935 flow [2024-06-21 15:46:10,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 324 transitions, 4712 flow, removed 35 selfloop flow, removed 11 redundant places. [2024-06-21 15:46:10,246 INFO L231 Difference]: Finished difference. Result has 380 places, 311 transitions, 4148 flow [2024-06-21 15:46:10,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4010, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4148, PETRI_PLACES=380, PETRI_TRANSITIONS=311} [2024-06-21 15:46:10,247 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 350 predicate places. [2024-06-21 15:46:10,247 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 311 transitions, 4148 flow [2024-06-21 15:46:10,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:46:10,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:46:10,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:46:10,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-21 15:46:10,247 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)] === [2024-06-21 15:46:10,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:46:10,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1050955992, now seen corresponding path program 1 times [2024-06-21 15:46:10,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:46:10,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910251294] [2024-06-21 15:46:10,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:46:10,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:46:10,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:46:11,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:46:11,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:46:11,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910251294] [2024-06-21 15:46:11,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910251294] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:46:11,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:46:11,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:46:11,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751228672] [2024-06-21 15:46:11,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:46:11,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:46:11,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:46:11,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:46:11,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:46:11,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:46:11,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 311 transitions, 4148 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:46:11,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:46:11,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:46:11,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:46:11,718 INFO L124 PetriNetUnfolderBase]: 865/1586 cut-off events. [2024-06-21 15:46:11,718 INFO L125 PetriNetUnfolderBase]: For 83714/83714 co-relation queries the response was YES. [2024-06-21 15:46:11,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10102 conditions, 1586 events. 865/1586 cut-off events. For 83714/83714 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 9176 event pairs, 170 based on Foata normal form. 2/1586 useless extension candidates. Maximal degree in co-relation 9928. Up to 1408 conditions per place. [2024-06-21 15:46:11,733 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 298 selfloop transitions, 36 changer transitions 0/336 dead transitions. [2024-06-21 15:46:11,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 336 transitions, 4930 flow [2024-06-21 15:46:11,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:46:11,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:46:11,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-21 15:46:11,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-21 15:46:11,734 INFO L175 Difference]: Start difference. First operand has 380 places, 311 transitions, 4148 flow. Second operand 11 states and 116 transitions. [2024-06-21 15:46:11,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 336 transitions, 4930 flow [2024-06-21 15:46:12,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 336 transitions, 4779 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-21 15:46:12,238 INFO L231 Difference]: Finished difference. Result has 386 places, 317 transitions, 4167 flow [2024-06-21 15:46:12,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3997, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4167, PETRI_PLACES=386, PETRI_TRANSITIONS=317} [2024-06-21 15:46:12,238 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 356 predicate places. [2024-06-21 15:46:12,238 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 317 transitions, 4167 flow [2024-06-21 15:46:12,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:46:12,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:46:12,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:46:12,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-21 15:46:12,239 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)] === [2024-06-21 15:46:12,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:46:12,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1167123442, now seen corresponding path program 2 times [2024-06-21 15:46:12,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:46:12,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774276382] [2024-06-21 15:46:12,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:46:12,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:46:12,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:46:13,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:46:13,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:46:13,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774276382] [2024-06-21 15:46:13,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774276382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:46:13,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:46:13,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:46:13,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199351541] [2024-06-21 15:46:13,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:46:13,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:46:13,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:46:13,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:46:13,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:46:13,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:46:13,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 317 transitions, 4167 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:46:13,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:46:13,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:46:13,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:46:13,851 INFO L124 PetriNetUnfolderBase]: 869/1594 cut-off events. [2024-06-21 15:46:13,852 INFO L125 PetriNetUnfolderBase]: For 84445/84445 co-relation queries the response was YES. [2024-06-21 15:46:13,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10138 conditions, 1594 events. 869/1594 cut-off events. For 84445/84445 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 9265 event pairs, 151 based on Foata normal form. 2/1595 useless extension candidates. Maximal degree in co-relation 9960. Up to 1368 conditions per place. [2024-06-21 15:46:13,871 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 295 selfloop transitions, 40 changer transitions 0/337 dead transitions. [2024-06-21 15:46:13,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 337 transitions, 4907 flow [2024-06-21 15:46:13,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:46:13,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:46:13,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-21 15:46:13,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-21 15:46:13,872 INFO L175 Difference]: Start difference. First operand has 386 places, 317 transitions, 4167 flow. Second operand 11 states and 116 transitions. [2024-06-21 15:46:13,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 337 transitions, 4907 flow [2024-06-21 15:46:14,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 337 transitions, 4829 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-21 15:46:14,431 INFO L231 Difference]: Finished difference. Result has 392 places, 318 transitions, 4201 flow [2024-06-21 15:46:14,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4089, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4201, PETRI_PLACES=392, PETRI_TRANSITIONS=318} [2024-06-21 15:46:14,432 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 362 predicate places. [2024-06-21 15:46:14,432 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 318 transitions, 4201 flow [2024-06-21 15:46:14,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:46:14,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:46:14,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:46:14,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-21 15:46:14,432 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)] === [2024-06-21 15:46:14,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:46:14,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1168285524, now seen corresponding path program 3 times [2024-06-21 15:46:14,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:46:14,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580320666] [2024-06-21 15:46:14,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:46:14,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:46:14,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:46:16,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:46:16,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:46:16,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580320666] [2024-06-21 15:46:16,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580320666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:46:16,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:46:16,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:46:16,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879474052] [2024-06-21 15:46:16,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:46:16,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:46:16,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:46:16,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:46:16,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:46:16,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:46:16,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 318 transitions, 4201 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:46:16,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:46:16,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:46:16,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:46:16,876 INFO L124 PetriNetUnfolderBase]: 907/1669 cut-off events. [2024-06-21 15:46:16,877 INFO L125 PetriNetUnfolderBase]: For 137213/137213 co-relation queries the response was YES. [2024-06-21 15:46:16,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11703 conditions, 1669 events. 907/1669 cut-off events. For 137213/137213 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 9700 event pairs, 174 based on Foata normal form. 2/1670 useless extension candidates. Maximal degree in co-relation 11524. Up to 1374 conditions per place. [2024-06-21 15:46:16,905 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 290 selfloop transitions, 52 changer transitions 1/345 dead transitions. [2024-06-21 15:46:16,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 345 transitions, 5497 flow [2024-06-21 15:46:16,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:46:16,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:46:16,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-21 15:46:16,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-21 15:46:16,906 INFO L175 Difference]: Start difference. First operand has 392 places, 318 transitions, 4201 flow. Second operand 11 states and 130 transitions. [2024-06-21 15:46:16,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 345 transitions, 5497 flow [2024-06-21 15:46:17,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 345 transitions, 5389 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-21 15:46:17,866 INFO L231 Difference]: Finished difference. Result has 395 places, 321 transitions, 4311 flow [2024-06-21 15:46:17,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4101, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4311, PETRI_PLACES=395, PETRI_TRANSITIONS=321} [2024-06-21 15:46:17,866 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 365 predicate places. [2024-06-21 15:46:17,866 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 321 transitions, 4311 flow [2024-06-21 15:46:17,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:46:17,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:46:17,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:46:17,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-21 15:46:17,867 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)] === [2024-06-21 15:46:17,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:46:17,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1168279944, now seen corresponding path program 4 times [2024-06-21 15:46:17,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:46:17,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245279608] [2024-06-21 15:46:17,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:46:17,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:46:17,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:46:18,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:46:18,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:46:18,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245279608] [2024-06-21 15:46:18,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245279608] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:46:18,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:46:18,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:46:18,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452301864] [2024-06-21 15:46:18,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:46:18,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:46:18,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:46:18,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:46:18,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:46:19,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:46:19,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 321 transitions, 4311 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:46:19,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:46:19,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:46:19,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:46:19,648 INFO L124 PetriNetUnfolderBase]: 904/1664 cut-off events. [2024-06-21 15:46:19,648 INFO L125 PetriNetUnfolderBase]: For 128715/128715 co-relation queries the response was YES. [2024-06-21 15:46:19,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11485 conditions, 1664 events. 904/1664 cut-off events. For 128715/128715 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 9687 event pairs, 174 based on Foata normal form. 2/1665 useless extension candidates. Maximal degree in co-relation 11304. Up to 1503 conditions per place. [2024-06-21 15:46:19,670 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 286 selfloop transitions, 50 changer transitions 1/339 dead transitions. [2024-06-21 15:46:19,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 339 transitions, 5069 flow [2024-06-21 15:46:19,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:46:19,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:46:19,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-21 15:46:19,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-21 15:46:19,671 INFO L175 Difference]: Start difference. First operand has 395 places, 321 transitions, 4311 flow. Second operand 11 states and 122 transitions. [2024-06-21 15:46:19,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 339 transitions, 5069 flow [2024-06-21 15:46:20,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 339 transitions, 4951 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-21 15:46:20,584 INFO L231 Difference]: Finished difference. Result has 398 places, 322 transitions, 4325 flow [2024-06-21 15:46:20,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4193, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4325, PETRI_PLACES=398, PETRI_TRANSITIONS=322} [2024-06-21 15:46:20,584 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 368 predicate places. [2024-06-21 15:46:20,584 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 322 transitions, 4325 flow [2024-06-21 15:46:20,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:46:20,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:46:20,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:46:20,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-21 15:46:20,584 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)] === [2024-06-21 15:46:20,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:46:20,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1168429674, now seen corresponding path program 5 times [2024-06-21 15:46:20,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:46:20,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808616401] [2024-06-21 15:46:20,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:46:20,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:46:20,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:46:21,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:46:21,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:46:21,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808616401] [2024-06-21 15:46:21,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808616401] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:46:21,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:46:21,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:46:21,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775842565] [2024-06-21 15:46:21,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:46:21,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:46:21,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:46:21,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:46:21,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:46:21,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:46:21,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 322 transitions, 4325 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:46:21,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:46:21,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:46:21,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:46:22,320 INFO L124 PetriNetUnfolderBase]: 886/1626 cut-off events. [2024-06-21 15:46:22,320 INFO L125 PetriNetUnfolderBase]: For 93470/93470 co-relation queries the response was YES. [2024-06-21 15:46:22,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10550 conditions, 1626 events. 886/1626 cut-off events. For 93470/93470 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 9479 event pairs, 157 based on Foata normal form. 2/1627 useless extension candidates. Maximal degree in co-relation 10368. Up to 1459 conditions per place. [2024-06-21 15:46:22,340 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 293 selfloop transitions, 45 changer transitions 0/340 dead transitions. [2024-06-21 15:46:22,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 340 transitions, 5075 flow [2024-06-21 15:46:22,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:46:22,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:46:22,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-21 15:46:22,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-21 15:46:22,341 INFO L175 Difference]: Start difference. First operand has 398 places, 322 transitions, 4325 flow. Second operand 11 states and 118 transitions. [2024-06-21 15:46:22,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 340 transitions, 5075 flow [2024-06-21 15:46:22,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 340 transitions, 4953 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-21 15:46:22,865 INFO L231 Difference]: Finished difference. Result has 400 places, 323 transitions, 4328 flow [2024-06-21 15:46:22,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4203, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4328, PETRI_PLACES=400, PETRI_TRANSITIONS=323} [2024-06-21 15:46:22,866 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 370 predicate places. [2024-06-21 15:46:22,866 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 323 transitions, 4328 flow [2024-06-21 15:46:22,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:46:22,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:46:22,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:46:22,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-21 15:46:22,866 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)] === [2024-06-21 15:46:22,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:46:22,866 INFO L85 PathProgramCache]: Analyzing trace with hash -784890048, now seen corresponding path program 6 times [2024-06-21 15:46:22,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:46:22,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655256722] [2024-06-21 15:46:22,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:46:22,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:46:22,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:46:23,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:46:23,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:46:23,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655256722] [2024-06-21 15:46:23,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655256722] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:46:23,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:46:23,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:46:23,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581080676] [2024-06-21 15:46:23,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:46:23,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:46:23,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:46:23,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:46:23,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:46:23,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:46:23,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 323 transitions, 4328 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:46:23,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:46:23,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:46:23,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:46:24,378 INFO L124 PetriNetUnfolderBase]: 898/1650 cut-off events. [2024-06-21 15:46:24,379 INFO L125 PetriNetUnfolderBase]: For 95647/95647 co-relation queries the response was YES. [2024-06-21 15:46:24,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10644 conditions, 1650 events. 898/1650 cut-off events. For 95647/95647 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 9676 event pairs, 179 based on Foata normal form. 2/1650 useless extension candidates. Maximal degree in co-relation 10461. Up to 1510 conditions per place. [2024-06-21 15:46:24,398 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 303 selfloop transitions, 38 changer transitions 0/343 dead transitions. [2024-06-21 15:46:24,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 343 transitions, 5093 flow [2024-06-21 15:46:24,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:46:24,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:46:24,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-21 15:46:24,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-21 15:46:24,399 INFO L175 Difference]: Start difference. First operand has 400 places, 323 transitions, 4328 flow. Second operand 11 states and 116 transitions. [2024-06-21 15:46:24,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 343 transitions, 5093 flow [2024-06-21 15:46:25,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 343 transitions, 4980 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-21 15:46:25,108 INFO L231 Difference]: Finished difference. Result has 404 places, 326 transitions, 4348 flow [2024-06-21 15:46:25,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4215, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4348, PETRI_PLACES=404, PETRI_TRANSITIONS=326} [2024-06-21 15:46:25,108 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 374 predicate places. [2024-06-21 15:46:25,108 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 326 transitions, 4348 flow [2024-06-21 15:46:25,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:46:25,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:46:25,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:46:25,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-21 15:46:25,109 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)] === [2024-06-21 15:46:25,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:46:25,109 INFO L85 PathProgramCache]: Analyzing trace with hash 587954766, now seen corresponding path program 7 times [2024-06-21 15:46:25,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:46:25,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163464570] [2024-06-21 15:46:25,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:46:25,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:46:25,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:46:26,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:46:26,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:46:26,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163464570] [2024-06-21 15:46:26,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163464570] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:46:26,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:46:26,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:46:26,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38685237] [2024-06-21 15:46:26,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:46:26,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:46:26,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:46:26,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:46:26,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:46:26,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:46:26,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 326 transitions, 4348 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:46:26,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:46:26,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:46:26,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:46:26,850 INFO L124 PetriNetUnfolderBase]: 902/1658 cut-off events. [2024-06-21 15:46:26,851 INFO L125 PetriNetUnfolderBase]: For 97318/97318 co-relation queries the response was YES. [2024-06-21 15:46:26,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10704 conditions, 1658 events. 902/1658 cut-off events. For 97318/97318 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 9752 event pairs, 171 based on Foata normal form. 2/1659 useless extension candidates. Maximal degree in co-relation 10518. Up to 1488 conditions per place. [2024-06-21 15:46:26,872 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 301 selfloop transitions, 41 changer transitions 0/344 dead transitions. [2024-06-21 15:46:26,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 344 transitions, 5104 flow [2024-06-21 15:46:26,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:46:26,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:46:26,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-21 15:46:26,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-21 15:46:26,873 INFO L175 Difference]: Start difference. First operand has 404 places, 326 transitions, 4348 flow. Second operand 11 states and 116 transitions. [2024-06-21 15:46:26,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 344 transitions, 5104 flow [2024-06-21 15:46:27,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 344 transitions, 5008 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-21 15:46:27,444 INFO L231 Difference]: Finished difference. Result has 409 places, 327 transitions, 4374 flow [2024-06-21 15:46:27,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4252, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4374, PETRI_PLACES=409, PETRI_TRANSITIONS=327} [2024-06-21 15:46:27,444 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 379 predicate places. [2024-06-21 15:46:27,444 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 327 transitions, 4374 flow [2024-06-21 15:46:27,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:46:27,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:46:27,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:46:27,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-21 15:46:27,445 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)] === [2024-06-21 15:46:27,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:46:27,445 INFO L85 PathProgramCache]: Analyzing trace with hash -781165181, now seen corresponding path program 1 times [2024-06-21 15:46:27,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:46:27,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725198347] [2024-06-21 15:46:27,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:46:27,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:46:27,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:46:29,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:46:29,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:46:29,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725198347] [2024-06-21 15:46:29,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725198347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:46:29,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:46:29,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:46:29,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776498505] [2024-06-21 15:46:29,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:46:29,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:46:29,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:46:29,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:46:29,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:46:29,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:46:29,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 327 transitions, 4374 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:46:29,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:46:29,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:46:29,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:46:30,198 INFO L124 PetriNetUnfolderBase]: 900/1655 cut-off events. [2024-06-21 15:46:30,198 INFO L125 PetriNetUnfolderBase]: For 88267/88267 co-relation queries the response was YES. [2024-06-21 15:46:30,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10569 conditions, 1655 events. 900/1655 cut-off events. For 88267/88267 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 9725 event pairs, 172 based on Foata normal form. 1/1655 useless extension candidates. Maximal degree in co-relation 10382. Up to 1486 conditions per place. [2024-06-21 15:46:30,219 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 287 selfloop transitions, 53 changer transitions 2/344 dead transitions. [2024-06-21 15:46:30,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 344 transitions, 5122 flow [2024-06-21 15:46:30,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:46:30,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:46:30,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-21 15:46:30,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-21 15:46:30,221 INFO L175 Difference]: Start difference. First operand has 409 places, 327 transitions, 4374 flow. Second operand 11 states and 124 transitions. [2024-06-21 15:46:30,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 344 transitions, 5122 flow [2024-06-21 15:46:30,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 344 transitions, 4992 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-21 15:46:30,862 INFO L231 Difference]: Finished difference. Result has 411 places, 327 transitions, 4358 flow [2024-06-21 15:46:30,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4244, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4358, PETRI_PLACES=411, PETRI_TRANSITIONS=327} [2024-06-21 15:46:30,863 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 381 predicate places. [2024-06-21 15:46:30,863 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 327 transitions, 4358 flow [2024-06-21 15:46:30,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:46:30,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:46:30,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:46:30,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-21 15:46:30,863 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)] === [2024-06-21 15:46:30,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:46:30,864 INFO L85 PathProgramCache]: Analyzing trace with hash -883919764, now seen corresponding path program 8 times [2024-06-21 15:46:30,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:46:30,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713046457] [2024-06-21 15:46:30,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:46:30,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:46:30,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:46:31,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:46:31,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:46:31,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713046457] [2024-06-21 15:46:31,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713046457] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:46:31,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:46:31,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:46:31,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116958583] [2024-06-21 15:46:31,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:46:31,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:46:31,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:46:31,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:46:31,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:46:32,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:46:32,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 327 transitions, 4358 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:46:32,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:46:32,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:46:32,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:46:32,706 INFO L124 PetriNetUnfolderBase]: 904/1663 cut-off events. [2024-06-21 15:46:32,706 INFO L125 PetriNetUnfolderBase]: For 93784/93784 co-relation queries the response was YES. [2024-06-21 15:46:32,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10608 conditions, 1663 events. 904/1663 cut-off events. For 93784/93784 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 9774 event pairs, 117 based on Foata normal form. 2/1664 useless extension candidates. Maximal degree in co-relation 10420. Up to 1408 conditions per place. [2024-06-21 15:46:32,729 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 307 selfloop transitions, 38 changer transitions 0/347 dead transitions. [2024-06-21 15:46:32,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 347 transitions, 5124 flow [2024-06-21 15:46:32,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:46:32,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:46:32,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2024-06-21 15:46:32,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-21 15:46:32,730 INFO L175 Difference]: Start difference. First operand has 411 places, 327 transitions, 4358 flow. Second operand 11 states and 110 transitions. [2024-06-21 15:46:32,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 347 transitions, 5124 flow [2024-06-21 15:46:33,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 347 transitions, 5010 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-21 15:46:33,352 INFO L231 Difference]: Finished difference. Result has 413 places, 328 transitions, 4358 flow [2024-06-21 15:46:33,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4244, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4358, PETRI_PLACES=413, PETRI_TRANSITIONS=328} [2024-06-21 15:46:33,352 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 383 predicate places. [2024-06-21 15:46:33,352 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 328 transitions, 4358 flow [2024-06-21 15:46:33,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:46:33,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:46:33,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:46:33,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-21 15:46:33,353 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)] === [2024-06-21 15:46:33,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:46:33,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1978098586, now seen corresponding path program 9 times [2024-06-21 15:46:33,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:46:33,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861425685] [2024-06-21 15:46:33,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:46:33,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:46:33,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:46:34,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:46:34,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:46:34,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861425685] [2024-06-21 15:46:34,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861425685] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:46:34,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:46:34,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:46:34,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882907872] [2024-06-21 15:46:34,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:46:34,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:46:34,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:46:34,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:46:34,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:46:34,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:46:34,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 328 transitions, 4358 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:46:34,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:46:34,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:46:34,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:46:35,023 INFO L124 PetriNetUnfolderBase]: 908/1671 cut-off events. [2024-06-21 15:46:35,023 INFO L125 PetriNetUnfolderBase]: For 95947/95947 co-relation queries the response was YES. [2024-06-21 15:46:35,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10692 conditions, 1671 events. 908/1671 cut-off events. For 95947/95947 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 9876 event pairs, 183 based on Foata normal form. 2/1671 useless extension candidates. Maximal degree in co-relation 10503. Up to 1521 conditions per place. [2024-06-21 15:46:35,046 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 309 selfloop transitions, 37 changer transitions 0/348 dead transitions. [2024-06-21 15:46:35,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 348 transitions, 5132 flow [2024-06-21 15:46:35,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:46:35,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:46:35,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-21 15:46:35,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-21 15:46:35,047 INFO L175 Difference]: Start difference. First operand has 413 places, 328 transitions, 4358 flow. Second operand 11 states and 119 transitions. [2024-06-21 15:46:35,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 348 transitions, 5132 flow [2024-06-21 15:46:35,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 348 transitions, 5028 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-21 15:46:35,817 INFO L231 Difference]: Finished difference. Result has 415 places, 329 transitions, 4368 flow [2024-06-21 15:46:35,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4254, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4368, PETRI_PLACES=415, PETRI_TRANSITIONS=329} [2024-06-21 15:46:35,818 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 385 predicate places. [2024-06-21 15:46:35,818 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 329 transitions, 4368 flow [2024-06-21 15:46:35,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:46:35,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:46:35,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:46:35,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-21 15:46:35,818 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)] === [2024-06-21 15:46:35,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:46:35,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1974379516, now seen corresponding path program 10 times [2024-06-21 15:46:35,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:46:35,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994616948] [2024-06-21 15:46:35,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:46:35,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:46:35,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:46:37,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:46:37,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:46:37,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994616948] [2024-06-21 15:46:37,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994616948] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:46:37,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:46:37,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:46:37,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199118507] [2024-06-21 15:46:37,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:46:37,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:46:37,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:46:37,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:46:37,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:46:37,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:46:37,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 329 transitions, 4368 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:46:37,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:46:37,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:46:37,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:46:38,148 INFO L124 PetriNetUnfolderBase]: 912/1679 cut-off events. [2024-06-21 15:46:38,148 INFO L125 PetriNetUnfolderBase]: For 97624/97624 co-relation queries the response was YES. [2024-06-21 15:46:38,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10731 conditions, 1679 events. 912/1679 cut-off events. For 97624/97624 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 9951 event pairs, 178 based on Foata normal form. 2/1680 useless extension candidates. Maximal degree in co-relation 10541. Up to 1533 conditions per place. [2024-06-21 15:46:38,169 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 306 selfloop transitions, 40 changer transitions 0/348 dead transitions. [2024-06-21 15:46:38,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 348 transitions, 5152 flow [2024-06-21 15:46:38,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:46:38,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:46:38,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-21 15:46:38,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-21 15:46:38,171 INFO L175 Difference]: Start difference. First operand has 415 places, 329 transitions, 4368 flow. Second operand 11 states and 119 transitions. [2024-06-21 15:46:38,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 348 transitions, 5152 flow [2024-06-21 15:46:38,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 348 transitions, 5048 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-21 15:46:38,827 INFO L231 Difference]: Finished difference. Result has 417 places, 330 transitions, 4386 flow [2024-06-21 15:46:38,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4264, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4386, PETRI_PLACES=417, PETRI_TRANSITIONS=330} [2024-06-21 15:46:38,828 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 387 predicate places. [2024-06-21 15:46:38,828 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 330 transitions, 4386 flow [2024-06-21 15:46:38,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:46:38,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:46:38,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:46:38,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-21 15:46:38,829 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)] === [2024-06-21 15:46:38,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:46:38,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1651215066, now seen corresponding path program 11 times [2024-06-21 15:46:38,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:46:38,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209793795] [2024-06-21 15:46:38,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:46:38,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:46:38,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:46:39,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:46:39,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:46:39,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209793795] [2024-06-21 15:46:39,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209793795] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:46:39,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:46:39,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:46:39,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772123575] [2024-06-21 15:46:39,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:46:39,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:46:39,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:46:39,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:46:39,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:46:39,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:46:39,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 330 transitions, 4386 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:46:39,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:46:39,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:46:39,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:46:40,606 INFO L124 PetriNetUnfolderBase]: 916/1687 cut-off events. [2024-06-21 15:46:40,606 INFO L125 PetriNetUnfolderBase]: For 99511/99511 co-relation queries the response was YES. [2024-06-21 15:46:40,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10784 conditions, 1687 events. 916/1687 cut-off events. For 99511/99511 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 10012 event pairs, 182 based on Foata normal form. 2/1688 useless extension candidates. Maximal degree in co-relation 10593. Up to 1535 conditions per place. [2024-06-21 15:46:40,628 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 302 selfloop transitions, 44 changer transitions 0/348 dead transitions. [2024-06-21 15:46:40,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 348 transitions, 5170 flow [2024-06-21 15:46:40,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:46:40,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:46:40,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-21 15:46:40,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-21 15:46:40,629 INFO L175 Difference]: Start difference. First operand has 417 places, 330 transitions, 4386 flow. Second operand 10 states and 115 transitions. [2024-06-21 15:46:40,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 348 transitions, 5170 flow [2024-06-21 15:46:41,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 348 transitions, 5065 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-21 15:46:41,225 INFO L231 Difference]: Finished difference. Result has 419 places, 331 transitions, 4415 flow [2024-06-21 15:46:41,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4281, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4415, PETRI_PLACES=419, PETRI_TRANSITIONS=331} [2024-06-21 15:46:41,225 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 389 predicate places. [2024-06-21 15:46:41,225 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 331 transitions, 4415 flow [2024-06-21 15:46:41,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:46:41,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:46:41,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:46:41,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-21 15:46:41,226 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)] === [2024-06-21 15:46:41,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:46:41,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1651215283, now seen corresponding path program 2 times [2024-06-21 15:46:41,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:46:41,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101995941] [2024-06-21 15:46:41,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:46:41,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:46:41,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:46:42,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:46:42,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:46:42,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101995941] [2024-06-21 15:46:42,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101995941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:46:42,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:46:42,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:46:42,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197774368] [2024-06-21 15:46:42,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:46:42,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:46:42,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:46:42,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:46:42,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:46:42,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:46:42,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 331 transitions, 4415 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:46:42,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:46:42,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:46:42,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:46:43,245 INFO L124 PetriNetUnfolderBase]: 919/1692 cut-off events. [2024-06-21 15:46:43,245 INFO L125 PetriNetUnfolderBase]: For 95860/95860 co-relation queries the response was YES. [2024-06-21 15:46:43,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10845 conditions, 1692 events. 919/1692 cut-off events. For 95860/95860 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 10027 event pairs, 182 based on Foata normal form. 1/1692 useless extension candidates. Maximal degree in co-relation 10654. Up to 1537 conditions per place. [2024-06-21 15:46:43,266 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 301 selfloop transitions, 47 changer transitions 0/350 dead transitions. [2024-06-21 15:46:43,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 350 transitions, 5255 flow [2024-06-21 15:46:43,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:46:43,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:46:43,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-21 15:46:43,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-21 15:46:43,267 INFO L175 Difference]: Start difference. First operand has 419 places, 331 transitions, 4415 flow. Second operand 10 states and 116 transitions. [2024-06-21 15:46:43,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 350 transitions, 5255 flow [2024-06-21 15:46:43,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 350 transitions, 5135 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-21 15:46:43,894 INFO L231 Difference]: Finished difference. Result has 421 places, 333 transitions, 4486 flow [2024-06-21 15:46:43,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4295, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4486, PETRI_PLACES=421, PETRI_TRANSITIONS=333} [2024-06-21 15:46:43,895 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 391 predicate places. [2024-06-21 15:46:43,895 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 333 transitions, 4486 flow [2024-06-21 15:46:43,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:46:43,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:46:43,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:46:43,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-21 15:46:43,895 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)] === [2024-06-21 15:46:43,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:46:43,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1651065336, now seen corresponding path program 12 times [2024-06-21 15:46:43,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:46:43,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985114796] [2024-06-21 15:46:43,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:46:43,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:46:43,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:46:44,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:46:44,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:46:44,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985114796] [2024-06-21 15:46:44,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985114796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:46:44,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:46:44,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:46:44,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796298020] [2024-06-21 15:46:44,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:46:44,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:46:44,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:46:44,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:46:44,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:46:45,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:46:45,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 333 transitions, 4486 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:46:45,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:46:45,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:46:45,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:46:45,609 INFO L124 PetriNetUnfolderBase]: 923/1700 cut-off events. [2024-06-21 15:46:45,610 INFO L125 PetriNetUnfolderBase]: For 103508/103508 co-relation queries the response was YES. [2024-06-21 15:46:45,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10908 conditions, 1700 events. 923/1700 cut-off events. For 103508/103508 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 10084 event pairs, 180 based on Foata normal form. 2/1701 useless extension candidates. Maximal degree in co-relation 10716. Up to 1557 conditions per place. [2024-06-21 15:46:45,629 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 314 selfloop transitions, 36 changer transitions 0/352 dead transitions. [2024-06-21 15:46:45,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 352 transitions, 5276 flow [2024-06-21 15:46:45,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:46:45,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:46:45,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-21 15:46:45,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36451612903225805 [2024-06-21 15:46:45,630 INFO L175 Difference]: Start difference. First operand has 421 places, 333 transitions, 4486 flow. Second operand 10 states and 113 transitions. [2024-06-21 15:46:45,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 352 transitions, 5276 flow [2024-06-21 15:46:46,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 352 transitions, 5133 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-21 15:46:46,286 INFO L231 Difference]: Finished difference. Result has 423 places, 334 transitions, 4461 flow [2024-06-21 15:46:46,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4343, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4461, PETRI_PLACES=423, PETRI_TRANSITIONS=334} [2024-06-21 15:46:46,286 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 393 predicate places. [2024-06-21 15:46:46,287 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 334 transitions, 4461 flow [2024-06-21 15:46:46,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:46:46,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:46:46,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:46:46,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-21 15:46:46,287 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)] === [2024-06-21 15:46:46,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:46:46,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1646944196, now seen corresponding path program 13 times [2024-06-21 15:46:46,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:46:46,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125466649] [2024-06-21 15:46:46,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:46:46,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:46:46,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:46:47,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:46:47,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:46:47,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125466649] [2024-06-21 15:46:47,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125466649] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:46:47,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:46:47,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:46:47,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273196426] [2024-06-21 15:46:47,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:46:47,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:46:47,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:46:47,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:46:47,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:46:47,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:46:47,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 334 transitions, 4461 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:46:47,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:46:47,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:46:47,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:46:48,486 INFO L124 PetriNetUnfolderBase]: 927/1710 cut-off events. [2024-06-21 15:46:48,486 INFO L125 PetriNetUnfolderBase]: For 105288/105288 co-relation queries the response was YES. [2024-06-21 15:46:48,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10961 conditions, 1710 events. 927/1710 cut-off events. For 105288/105288 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 10203 event pairs, 174 based on Foata normal form. 2/1708 useless extension candidates. Maximal degree in co-relation 10768. Up to 1555 conditions per place. [2024-06-21 15:46:48,504 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 308 selfloop transitions, 43 changer transitions 0/353 dead transitions. [2024-06-21 15:46:48,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 353 transitions, 5271 flow [2024-06-21 15:46:48,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:46:48,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:46:48,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-21 15:46:48,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-21 15:46:48,505 INFO L175 Difference]: Start difference. First operand has 423 places, 334 transitions, 4461 flow. Second operand 11 states and 118 transitions. [2024-06-21 15:46:48,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 353 transitions, 5271 flow [2024-06-21 15:46:49,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 353 transitions, 5163 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-21 15:46:49,176 INFO L231 Difference]: Finished difference. Result has 426 places, 335 transitions, 4487 flow [2024-06-21 15:46:49,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4353, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4487, PETRI_PLACES=426, PETRI_TRANSITIONS=335} [2024-06-21 15:46:49,176 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 396 predicate places. [2024-06-21 15:46:49,176 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 335 transitions, 4487 flow [2024-06-21 15:46:49,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:46:49,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:46:49,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:46:49,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-21 15:46:49,177 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)] === [2024-06-21 15:46:49,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:46:49,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1795315342, now seen corresponding path program 1 times [2024-06-21 15:46:49,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:46:49,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336482920] [2024-06-21 15:46:49,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:46:49,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:46:49,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:46:51,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:46:51,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:46:51,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336482920] [2024-06-21 15:46:51,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336482920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:46:51,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:46:51,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:46:51,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860792735] [2024-06-21 15:46:51,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:46:51,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:46:51,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:46:51,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:46:51,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:46:51,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:46:51,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 335 transitions, 4487 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:46:51,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:46:51,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:46:51,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:46:51,767 INFO L124 PetriNetUnfolderBase]: 947/1754 cut-off events. [2024-06-21 15:46:51,768 INFO L125 PetriNetUnfolderBase]: For 151972/151972 co-relation queries the response was YES. [2024-06-21 15:46:51,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11116 conditions, 1754 events. 947/1754 cut-off events. For 151972/151972 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 10533 event pairs, 191 based on Foata normal form. 10/1760 useless extension candidates. Maximal degree in co-relation 10921. Up to 1555 conditions per place. [2024-06-21 15:46:51,791 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 302 selfloop transitions, 37 changer transitions 18/359 dead transitions. [2024-06-21 15:46:51,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 359 transitions, 5319 flow [2024-06-21 15:46:51,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 15:46:51,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 15:46:51,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-21 15:46:51,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3521505376344086 [2024-06-21 15:46:51,792 INFO L175 Difference]: Start difference. First operand has 426 places, 335 transitions, 4487 flow. Second operand 12 states and 131 transitions. [2024-06-21 15:46:51,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 359 transitions, 5319 flow [2024-06-21 15:46:52,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 359 transitions, 5195 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-21 15:46:52,482 INFO L231 Difference]: Finished difference. Result has 429 places, 327 transitions, 4285 flow [2024-06-21 15:46:52,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4363, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4285, PETRI_PLACES=429, PETRI_TRANSITIONS=327} [2024-06-21 15:46:52,482 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 399 predicate places. [2024-06-21 15:46:52,482 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 327 transitions, 4285 flow [2024-06-21 15:46:52,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:46:52,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:46:52,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:46:52,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-21 15:46:52,483 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)] === [2024-06-21 15:46:52,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:46:52,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1646949776, now seen corresponding path program 14 times [2024-06-21 15:46:52,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:46:52,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525906400] [2024-06-21 15:46:52,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:46:52,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:46:52,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:46:53,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:46:53,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:46:53,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525906400] [2024-06-21 15:46:53,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525906400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:46:53,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:46:53,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:46:53,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942268766] [2024-06-21 15:46:53,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:46:53,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:46:53,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:46:53,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:46:53,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:46:53,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:46:53,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 327 transitions, 4285 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:46:53,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:46:53,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:46:53,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:46:54,202 INFO L124 PetriNetUnfolderBase]: 912/1689 cut-off events. [2024-06-21 15:46:54,202 INFO L125 PetriNetUnfolderBase]: For 107995/107995 co-relation queries the response was YES. [2024-06-21 15:46:54,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10694 conditions, 1689 events. 912/1689 cut-off events. For 107995/107995 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 10062 event pairs, 174 based on Foata normal form. 2/1687 useless extension candidates. Maximal degree in co-relation 10498. Up to 1520 conditions per place. [2024-06-21 15:46:54,223 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 300 selfloop transitions, 44 changer transitions 0/346 dead transitions. [2024-06-21 15:46:54,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 346 transitions, 5077 flow [2024-06-21 15:46:54,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:46:54,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:46:54,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-21 15:46:54,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-21 15:46:54,223 INFO L175 Difference]: Start difference. First operand has 429 places, 327 transitions, 4285 flow. Second operand 11 states and 119 transitions. [2024-06-21 15:46:54,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 346 transitions, 5077 flow [2024-06-21 15:46:54,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 346 transitions, 4957 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-06-21 15:46:54,940 INFO L231 Difference]: Finished difference. Result has 424 places, 328 transitions, 4309 flow [2024-06-21 15:46:54,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4171, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4309, PETRI_PLACES=424, PETRI_TRANSITIONS=328} [2024-06-21 15:46:54,940 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 394 predicate places. [2024-06-21 15:46:54,940 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 328 transitions, 4309 flow [2024-06-21 15:46:54,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:46:54,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:46:54,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:46:54,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-21 15:46:54,941 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)] === [2024-06-21 15:46:54,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:46:54,941 INFO L85 PathProgramCache]: Analyzing trace with hash -977715632, now seen corresponding path program 15 times [2024-06-21 15:46:54,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:46:54,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480836289] [2024-06-21 15:46:54,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:46:54,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:46:54,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:46:55,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:46:55,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:46:55,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480836289] [2024-06-21 15:46:55,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480836289] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:46:55,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:46:55,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:46:55,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921712514] [2024-06-21 15:46:55,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:46:55,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:46:55,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:46:55,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:46:55,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:46:55,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:46:55,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 328 transitions, 4309 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:46:55,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:46:55,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:46:55,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:46:56,576 INFO L124 PetriNetUnfolderBase]: 916/1697 cut-off events. [2024-06-21 15:46:56,577 INFO L125 PetriNetUnfolderBase]: For 108861/108861 co-relation queries the response was YES. [2024-06-21 15:46:56,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10688 conditions, 1697 events. 916/1697 cut-off events. For 108861/108861 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 10129 event pairs, 172 based on Foata normal form. 2/1695 useless extension candidates. Maximal degree in co-relation 10493. Up to 1542 conditions per place. [2024-06-21 15:46:56,599 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 304 selfloop transitions, 41 changer transitions 0/347 dead transitions. [2024-06-21 15:46:56,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 347 transitions, 5095 flow [2024-06-21 15:46:56,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:46:56,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:46:56,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-21 15:46:56,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-21 15:46:56,600 INFO L175 Difference]: Start difference. First operand has 424 places, 328 transitions, 4309 flow. Second operand 11 states and 116 transitions. [2024-06-21 15:46:56,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 347 transitions, 5095 flow [2024-06-21 15:46:57,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 347 transitions, 4949 flow, removed 30 selfloop flow, removed 11 redundant places. [2024-06-21 15:46:57,272 INFO L231 Difference]: Finished difference. Result has 424 places, 329 transitions, 4297 flow [2024-06-21 15:46:57,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4165, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4297, PETRI_PLACES=424, PETRI_TRANSITIONS=329} [2024-06-21 15:46:57,273 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 394 predicate places. [2024-06-21 15:46:57,273 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 329 transitions, 4297 flow [2024-06-21 15:46:57,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:46:57,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:46:57,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:46:57,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-21 15:46:57,273 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)] === [2024-06-21 15:46:57,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:46:57,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1447642406, now seen corresponding path program 16 times [2024-06-21 15:46:57,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:46:57,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640702253] [2024-06-21 15:46:57,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:46:57,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:46:57,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:46:58,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:46:58,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:46:58,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640702253] [2024-06-21 15:46:58,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640702253] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:46:58,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:46:58,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:46:58,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460068796] [2024-06-21 15:46:58,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:46:58,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:46:58,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:46:58,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:46:58,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:46:58,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:46:58,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 329 transitions, 4297 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:46:58,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:46:58,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:46:58,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:46:58,925 INFO L124 PetriNetUnfolderBase]: 920/1705 cut-off events. [2024-06-21 15:46:58,925 INFO L125 PetriNetUnfolderBase]: For 106866/106866 co-relation queries the response was YES. [2024-06-21 15:46:58,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10663 conditions, 1705 events. 920/1705 cut-off events. For 106866/106866 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 10192 event pairs, 174 based on Foata normal form. 2/1703 useless extension candidates. Maximal degree in co-relation 10469. Up to 1525 conditions per place. [2024-06-21 15:46:58,947 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 298 selfloop transitions, 48 changer transitions 0/348 dead transitions. [2024-06-21 15:46:58,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 348 transitions, 5093 flow [2024-06-21 15:46:58,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:46:58,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:46:58,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-21 15:46:58,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-21 15:46:58,948 INFO L175 Difference]: Start difference. First operand has 424 places, 329 transitions, 4297 flow. Second operand 11 states and 119 transitions. [2024-06-21 15:46:58,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 348 transitions, 5093 flow [2024-06-21 15:46:59,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 348 transitions, 4971 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-21 15:46:59,744 INFO L231 Difference]: Finished difference. Result has 426 places, 330 transitions, 4323 flow [2024-06-21 15:46:59,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4175, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4323, PETRI_PLACES=426, PETRI_TRANSITIONS=330} [2024-06-21 15:46:59,744 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 396 predicate places. [2024-06-21 15:46:59,745 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 330 transitions, 4323 flow [2024-06-21 15:46:59,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:46:59,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:46:59,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:46:59,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-21 15:46:59,745 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)] === [2024-06-21 15:46:59,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:46:59,746 INFO L85 PathProgramCache]: Analyzing trace with hash -971993776, now seen corresponding path program 2 times [2024-06-21 15:46:59,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:46:59,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87391845] [2024-06-21 15:46:59,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:46:59,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:46:59,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:47:00,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:47:00,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:47:00,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87391845] [2024-06-21 15:47:00,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87391845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:47:00,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:47:00,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:47:00,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57713425] [2024-06-21 15:47:00,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:47:00,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:47:00,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:47:00,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:47:00,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:47:00,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:47:00,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 330 transitions, 4323 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:00,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:47:00,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:47:00,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:47:01,646 INFO L124 PetriNetUnfolderBase]: 936/1741 cut-off events. [2024-06-21 15:47:01,647 INFO L125 PetriNetUnfolderBase]: For 154380/154380 co-relation queries the response was YES. [2024-06-21 15:47:01,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10776 conditions, 1741 events. 936/1741 cut-off events. For 154380/154380 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 10473 event pairs, 182 based on Foata normal form. 10/1747 useless extension candidates. Maximal degree in co-relation 10581. Up to 1532 conditions per place. [2024-06-21 15:47:01,670 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 297 selfloop transitions, 39 changer transitions 16/354 dead transitions. [2024-06-21 15:47:01,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 354 transitions, 5139 flow [2024-06-21 15:47:01,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 15:47:01,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 15:47:01,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-21 15:47:01,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3521505376344086 [2024-06-21 15:47:01,671 INFO L175 Difference]: Start difference. First operand has 426 places, 330 transitions, 4323 flow. Second operand 12 states and 131 transitions. [2024-06-21 15:47:01,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 354 transitions, 5139 flow [2024-06-21 15:47:02,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 354 transitions, 4989 flow, removed 22 selfloop flow, removed 10 redundant places. [2024-06-21 15:47:02,419 INFO L231 Difference]: Finished difference. Result has 428 places, 324 transitions, 4172 flow [2024-06-21 15:47:02,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4173, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4172, PETRI_PLACES=428, PETRI_TRANSITIONS=324} [2024-06-21 15:47:02,420 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 398 predicate places. [2024-06-21 15:47:02,420 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 324 transitions, 4172 flow [2024-06-21 15:47:02,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:02,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:47:02,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:47:02,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-21 15:47:02,420 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)] === [2024-06-21 15:47:02,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:47:02,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1447647986, now seen corresponding path program 17 times [2024-06-21 15:47:02,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:47:02,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659130492] [2024-06-21 15:47:02,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:47:02,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:47:02,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:47:03,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:47:03,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:47:03,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659130492] [2024-06-21 15:47:03,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659130492] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:47:03,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:47:03,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:47:03,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090429094] [2024-06-21 15:47:03,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:47:03,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:47:03,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:47:03,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:47:03,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:47:03,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:47:03,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 324 transitions, 4172 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:03,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:47:03,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:47:03,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:47:04,327 INFO L124 PetriNetUnfolderBase]: 904/1681 cut-off events. [2024-06-21 15:47:04,327 INFO L125 PetriNetUnfolderBase]: For 109456/109456 co-relation queries the response was YES. [2024-06-21 15:47:04,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10433 conditions, 1681 events. 904/1681 cut-off events. For 109456/109456 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 10025 event pairs, 170 based on Foata normal form. 2/1679 useless extension candidates. Maximal degree in co-relation 10237. Up to 1481 conditions per place. [2024-06-21 15:47:04,350 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 293 selfloop transitions, 50 changer transitions 0/345 dead transitions. [2024-06-21 15:47:04,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 345 transitions, 4968 flow [2024-06-21 15:47:04,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 15:47:04,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 15:47:04,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-21 15:47:04,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-21 15:47:04,351 INFO L175 Difference]: Start difference. First operand has 428 places, 324 transitions, 4172 flow. Second operand 12 states and 128 transitions. [2024-06-21 15:47:04,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 345 transitions, 4968 flow [2024-06-21 15:47:05,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 345 transitions, 4872 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-21 15:47:05,086 INFO L231 Difference]: Finished difference. Result has 424 places, 325 transitions, 4232 flow [2024-06-21 15:47:05,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4078, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4232, PETRI_PLACES=424, PETRI_TRANSITIONS=325} [2024-06-21 15:47:05,087 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 394 predicate places. [2024-06-21 15:47:05,087 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 325 transitions, 4232 flow [2024-06-21 15:47:05,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:05,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:47:05,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:47:05,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-21 15:47:05,088 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)] === [2024-06-21 15:47:05,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:47:05,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1447432660, now seen corresponding path program 3 times [2024-06-21 15:47:05,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:47:05,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386486069] [2024-06-21 15:47:05,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:47:05,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:47:05,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:47:06,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:47:06,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:47:06,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386486069] [2024-06-21 15:47:06,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386486069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:47:06,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:47:06,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:47:06,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902729849] [2024-06-21 15:47:06,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:47:06,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:47:06,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:47:06,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:47:06,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:47:06,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:47:06,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 325 transitions, 4232 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:06,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:47:06,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:47:06,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:47:07,069 INFO L124 PetriNetUnfolderBase]: 920/1717 cut-off events. [2024-06-21 15:47:07,069 INFO L125 PetriNetUnfolderBase]: For 154187/154187 co-relation queries the response was YES. [2024-06-21 15:47:07,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10592 conditions, 1717 events. 920/1717 cut-off events. For 154187/154187 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 10291 event pairs, 178 based on Foata normal form. 10/1723 useless extension candidates. Maximal degree in co-relation 10397. Up to 1483 conditions per place. [2024-06-21 15:47:07,092 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 288 selfloop transitions, 43 changer transitions 16/349 dead transitions. [2024-06-21 15:47:07,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 349 transitions, 5038 flow [2024-06-21 15:47:07,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 15:47:07,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 15:47:07,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-21 15:47:07,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-21 15:47:07,093 INFO L175 Difference]: Start difference. First operand has 424 places, 325 transitions, 4232 flow. Second operand 12 states and 132 transitions. [2024-06-21 15:47:07,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 349 transitions, 5038 flow [2024-06-21 15:47:07,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 349 transitions, 4878 flow, removed 32 selfloop flow, removed 12 redundant places. [2024-06-21 15:47:07,805 INFO L231 Difference]: Finished difference. Result has 424 places, 319 transitions, 4089 flow [2024-06-21 15:47:07,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4074, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4089, PETRI_PLACES=424, PETRI_TRANSITIONS=319} [2024-06-21 15:47:07,806 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 394 predicate places. [2024-06-21 15:47:07,806 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 319 transitions, 4089 flow [2024-06-21 15:47:07,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:07,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:47:07,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:47:07,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-21 15:47:07,806 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)] === [2024-06-21 15:47:07,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:47:07,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1440290756, now seen corresponding path program 18 times [2024-06-21 15:47:07,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:47:07,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397445744] [2024-06-21 15:47:07,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:47:07,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:47:07,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:47:09,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:47:09,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:47:09,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397445744] [2024-06-21 15:47:09,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397445744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:47:09,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:47:09,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:47:09,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90394901] [2024-06-21 15:47:09,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:47:09,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:47:09,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:47:09,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:47:09,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:47:09,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:47:09,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 319 transitions, 4089 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:09,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:47:09,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:47:09,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:47:10,115 INFO L124 PetriNetUnfolderBase]: 888/1657 cut-off events. [2024-06-21 15:47:10,115 INFO L125 PetriNetUnfolderBase]: For 103486/103486 co-relation queries the response was YES. [2024-06-21 15:47:10,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10205 conditions, 1657 events. 888/1657 cut-off events. For 103486/103486 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 9879 event pairs, 174 based on Foata normal form. 2/1655 useless extension candidates. Maximal degree in co-relation 10011. Up to 1468 conditions per place. [2024-06-21 15:47:10,137 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 288 selfloop transitions, 47 changer transitions 1/338 dead transitions. [2024-06-21 15:47:10,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 338 transitions, 4863 flow [2024-06-21 15:47:10,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:47:10,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:47:10,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-21 15:47:10,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-21 15:47:10,138 INFO L175 Difference]: Start difference. First operand has 424 places, 319 transitions, 4089 flow. Second operand 11 states and 119 transitions. [2024-06-21 15:47:10,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 338 transitions, 4863 flow [2024-06-21 15:47:10,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 338 transitions, 4762 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-21 15:47:10,766 INFO L231 Difference]: Finished difference. Result has 418 places, 320 transitions, 4132 flow [2024-06-21 15:47:10,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3990, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4132, PETRI_PLACES=418, PETRI_TRANSITIONS=320} [2024-06-21 15:47:10,766 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 388 predicate places. [2024-06-21 15:47:10,766 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 320 transitions, 4132 flow [2024-06-21 15:47:10,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:10,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:47:10,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:47:10,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-21 15:47:10,767 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)] === [2024-06-21 15:47:10,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:47:10,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1440282820, now seen corresponding path program 4 times [2024-06-21 15:47:10,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:47:10,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81419418] [2024-06-21 15:47:10,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:47:10,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:47:10,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:47:12,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:47:12,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:47:12,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81419418] [2024-06-21 15:47:12,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81419418] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:47:12,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:47:12,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:47:12,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410069869] [2024-06-21 15:47:12,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:47:12,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:47:12,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:47:12,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:47:12,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:47:12,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:47:12,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 320 transitions, 4132 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:12,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:47:12,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:47:12,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:47:12,933 INFO L124 PetriNetUnfolderBase]: 904/1693 cut-off events. [2024-06-21 15:47:12,934 INFO L125 PetriNetUnfolderBase]: For 145934/145934 co-relation queries the response was YES. [2024-06-21 15:47:12,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10338 conditions, 1693 events. 904/1693 cut-off events. For 145934/145934 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 10143 event pairs, 178 based on Foata normal form. 10/1699 useless extension candidates. Maximal degree in co-relation 10145. Up to 1450 conditions per place. [2024-06-21 15:47:12,957 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 282 selfloop transitions, 43 changer transitions 17/344 dead transitions. [2024-06-21 15:47:12,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 344 transitions, 4926 flow [2024-06-21 15:47:12,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 15:47:12,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 15:47:12,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-21 15:47:12,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-21 15:47:12,958 INFO L175 Difference]: Start difference. First operand has 418 places, 320 transitions, 4132 flow. Second operand 12 states and 132 transitions. [2024-06-21 15:47:12,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 344 transitions, 4926 flow [2024-06-21 15:47:13,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 344 transitions, 4776 flow, removed 29 selfloop flow, removed 10 redundant places. [2024-06-21 15:47:13,615 INFO L231 Difference]: Finished difference. Result has 420 places, 314 transitions, 3991 flow [2024-06-21 15:47:13,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3986, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3991, PETRI_PLACES=420, PETRI_TRANSITIONS=314} [2024-06-21 15:47:13,616 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 390 predicate places. [2024-06-21 15:47:13,616 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 314 transitions, 3991 flow [2024-06-21 15:47:13,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:13,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:47:13,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:47:13,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-21 15:47:13,616 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)] === [2024-06-21 15:47:13,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:47:13,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1440023350, now seen corresponding path program 5 times [2024-06-21 15:47:13,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:47:13,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832945431] [2024-06-21 15:47:13,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:47:13,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:47:13,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:47:15,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:47:15,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:47:15,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832945431] [2024-06-21 15:47:15,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832945431] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:47:15,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:47:15,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:47:15,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102517285] [2024-06-21 15:47:15,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:47:15,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:47:15,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:47:15,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:47:15,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:47:15,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:47:15,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 314 transitions, 3991 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:15,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:47:15,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:47:15,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:47:16,123 INFO L124 PetriNetUnfolderBase]: 886/1663 cut-off events. [2024-06-21 15:47:16,123 INFO L125 PetriNetUnfolderBase]: For 144201/144201 co-relation queries the response was YES. [2024-06-21 15:47:16,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10040 conditions, 1663 events. 886/1663 cut-off events. For 144201/144201 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 9930 event pairs, 180 based on Foata normal form. 10/1669 useless extension candidates. Maximal degree in co-relation 9847. Up to 1427 conditions per place. [2024-06-21 15:47:16,143 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 279 selfloop transitions, 44 changer transitions 13/338 dead transitions. [2024-06-21 15:47:16,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 338 transitions, 4769 flow [2024-06-21 15:47:16,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 15:47:16,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 15:47:16,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-21 15:47:16,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34946236559139787 [2024-06-21 15:47:16,144 INFO L175 Difference]: Start difference. First operand has 420 places, 314 transitions, 3991 flow. Second operand 12 states and 130 transitions. [2024-06-21 15:47:16,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 338 transitions, 4769 flow [2024-06-21 15:47:16,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 338 transitions, 4643 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-21 15:47:16,796 INFO L231 Difference]: Finished difference. Result has 414 places, 311 transitions, 3913 flow [2024-06-21 15:47:16,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3865, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3913, PETRI_PLACES=414, PETRI_TRANSITIONS=311} [2024-06-21 15:47:16,797 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 384 predicate places. [2024-06-21 15:47:16,797 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 311 transitions, 3913 flow [2024-06-21 15:47:16,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:16,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:47:16,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:47:16,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-21 15:47:16,797 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)] === [2024-06-21 15:47:16,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:47:16,798 INFO L85 PathProgramCache]: Analyzing trace with hash -770635756, now seen corresponding path program 6 times [2024-06-21 15:47:16,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:47:16,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931949103] [2024-06-21 15:47:16,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:47:16,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:47:16,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:47:18,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:47:18,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:47:18,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931949103] [2024-06-21 15:47:18,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931949103] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:47:18,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:47:18,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:47:18,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417052516] [2024-06-21 15:47:18,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:47:18,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:47:18,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:47:18,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:47:18,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:47:18,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:47:18,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 311 transitions, 3913 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:18,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:47:18,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:47:18,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:47:19,304 INFO L124 PetriNetUnfolderBase]: 874/1643 cut-off events. [2024-06-21 15:47:19,304 INFO L125 PetriNetUnfolderBase]: For 130465/130465 co-relation queries the response was YES. [2024-06-21 15:47:19,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9843 conditions, 1643 events. 874/1643 cut-off events. For 130465/130465 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 9788 event pairs, 174 based on Foata normal form. 8/1647 useless extension candidates. Maximal degree in co-relation 9653. Up to 1385 conditions per place. [2024-06-21 15:47:19,325 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 276 selfloop transitions, 41 changer transitions 18/337 dead transitions. [2024-06-21 15:47:19,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 337 transitions, 4705 flow [2024-06-21 15:47:19,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 15:47:19,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 15:47:19,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-21 15:47:19,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34946236559139787 [2024-06-21 15:47:19,326 INFO L175 Difference]: Start difference. First operand has 414 places, 311 transitions, 3913 flow. Second operand 12 states and 130 transitions. [2024-06-21 15:47:19,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 337 transitions, 4705 flow [2024-06-21 15:47:20,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 337 transitions, 4599 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-06-21 15:47:20,117 INFO L231 Difference]: Finished difference. Result has 412 places, 307 transitions, 3819 flow [2024-06-21 15:47:20,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3811, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3819, PETRI_PLACES=412, PETRI_TRANSITIONS=307} [2024-06-21 15:47:20,117 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 382 predicate places. [2024-06-21 15:47:20,117 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 307 transitions, 3819 flow [2024-06-21 15:47:20,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:20,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:47:20,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:47:20,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-21 15:47:20,118 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)] === [2024-06-21 15:47:20,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:47:20,118 INFO L85 PathProgramCache]: Analyzing trace with hash -237294766, now seen corresponding path program 19 times [2024-06-21 15:47:20,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:47:20,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421452656] [2024-06-21 15:47:20,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:47:20,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:47:20,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:47:21,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:47:21,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:47:21,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421452656] [2024-06-21 15:47:21,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421452656] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:47:21,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:47:21,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:47:21,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921169090] [2024-06-21 15:47:21,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:47:21,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:47:21,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:47:21,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:47:21,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:47:21,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:47:21,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 307 transitions, 3819 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:21,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:47:21,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:47:21,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:47:21,765 INFO L124 PetriNetUnfolderBase]: 834/1557 cut-off events. [2024-06-21 15:47:21,765 INFO L125 PetriNetUnfolderBase]: For 97026/97026 co-relation queries the response was YES. [2024-06-21 15:47:21,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9396 conditions, 1557 events. 834/1557 cut-off events. For 97026/97026 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 9127 event pairs, 100 based on Foata normal form. 2/1558 useless extension candidates. Maximal degree in co-relation 9207. Up to 1230 conditions per place. [2024-06-21 15:47:21,781 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 272 selfloop transitions, 50 changer transitions 0/324 dead transitions. [2024-06-21 15:47:21,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 324 transitions, 4541 flow [2024-06-21 15:47:21,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:47:21,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:47:21,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-21 15:47:21,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3258064516129032 [2024-06-21 15:47:21,782 INFO L175 Difference]: Start difference. First operand has 412 places, 307 transitions, 3819 flow. Second operand 10 states and 101 transitions. [2024-06-21 15:47:21,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 324 transitions, 4541 flow [2024-06-21 15:47:22,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 324 transitions, 4429 flow, removed 15 selfloop flow, removed 12 redundant places. [2024-06-21 15:47:22,388 INFO L231 Difference]: Finished difference. Result has 403 places, 308 transitions, 3861 flow [2024-06-21 15:47:22,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3707, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3861, PETRI_PLACES=403, PETRI_TRANSITIONS=308} [2024-06-21 15:47:22,388 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 373 predicate places. [2024-06-21 15:47:22,388 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 308 transitions, 3861 flow [2024-06-21 15:47:22,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:22,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:47:22,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:47:22,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-21 15:47:22,389 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)] === [2024-06-21 15:47:22,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:47:22,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1199549268, now seen corresponding path program 20 times [2024-06-21 15:47:22,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:47:22,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557838868] [2024-06-21 15:47:22,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:47:22,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:47:22,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:47:23,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:47:23,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:47:23,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557838868] [2024-06-21 15:47:23,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557838868] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:47:23,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:47:23,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:47:23,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879495155] [2024-06-21 15:47:23,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:47:23,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:47:23,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:47:23,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:47:23,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:47:23,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:47:23,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 308 transitions, 3861 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:23,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:47:23,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:47:23,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:47:24,052 INFO L124 PetriNetUnfolderBase]: 838/1565 cut-off events. [2024-06-21 15:47:24,052 INFO L125 PetriNetUnfolderBase]: For 95982/95982 co-relation queries the response was YES. [2024-06-21 15:47:24,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9517 conditions, 1565 events. 838/1565 cut-off events. For 95982/95982 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 9204 event pairs, 158 based on Foata normal form. 2/1566 useless extension candidates. Maximal degree in co-relation 9332. Up to 1365 conditions per place. [2024-06-21 15:47:24,072 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 275 selfloop transitions, 47 changer transitions 0/324 dead transitions. [2024-06-21 15:47:24,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 324 transitions, 4583 flow [2024-06-21 15:47:24,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:47:24,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:47:24,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-21 15:47:24,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33548387096774196 [2024-06-21 15:47:24,073 INFO L175 Difference]: Start difference. First operand has 403 places, 308 transitions, 3861 flow. Second operand 10 states and 104 transitions. [2024-06-21 15:47:24,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 324 transitions, 4583 flow [2024-06-21 15:47:24,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 324 transitions, 4443 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-21 15:47:24,711 INFO L231 Difference]: Finished difference. Result has 405 places, 309 transitions, 3869 flow [2024-06-21 15:47:24,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3725, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3869, PETRI_PLACES=405, PETRI_TRANSITIONS=309} [2024-06-21 15:47:24,711 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 375 predicate places. [2024-06-21 15:47:24,711 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 309 transitions, 3869 flow [2024-06-21 15:47:24,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:24,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:47:24,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:47:24,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-21 15:47:24,712 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)] === [2024-06-21 15:47:24,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:47:24,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1195830198, now seen corresponding path program 21 times [2024-06-21 15:47:24,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:47:24,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145709715] [2024-06-21 15:47:24,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:47:24,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:47:24,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:47:25,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:47:25,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:47:25,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145709715] [2024-06-21 15:47:25,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145709715] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:47:25,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:47:25,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:47:25,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32291189] [2024-06-21 15:47:25,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:47:25,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:47:25,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:47:25,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:47:25,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:47:26,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:47:26,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 309 transitions, 3869 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:26,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:47:26,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:47:26,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:47:26,722 INFO L124 PetriNetUnfolderBase]: 842/1573 cut-off events. [2024-06-21 15:47:26,723 INFO L125 PetriNetUnfolderBase]: For 94230/94230 co-relation queries the response was YES. [2024-06-21 15:47:26,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9508 conditions, 1573 events. 842/1573 cut-off events. For 94230/94230 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 9292 event pairs, 177 based on Foata normal form. 2/1571 useless extension candidates. Maximal degree in co-relation 9322. Up to 1421 conditions per place. [2024-06-21 15:47:26,743 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 280 selfloop transitions, 42 changer transitions 0/324 dead transitions. [2024-06-21 15:47:26,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 324 transitions, 4595 flow [2024-06-21 15:47:26,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:47:26,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:47:26,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-21 15:47:26,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-21 15:47:26,744 INFO L175 Difference]: Start difference. First operand has 405 places, 309 transitions, 3869 flow. Second operand 11 states and 118 transitions. [2024-06-21 15:47:26,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 324 transitions, 4595 flow [2024-06-21 15:47:27,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 324 transitions, 4465 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-21 15:47:27,403 INFO L231 Difference]: Finished difference. Result has 408 places, 310 transitions, 3871 flow [2024-06-21 15:47:27,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3741, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3871, PETRI_PLACES=408, PETRI_TRANSITIONS=310} [2024-06-21 15:47:27,403 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 378 predicate places. [2024-06-21 15:47:27,404 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 310 transitions, 3871 flow [2024-06-21 15:47:27,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:27,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:47:27,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:47:27,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-21 15:47:27,404 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)] === [2024-06-21 15:47:27,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:47:27,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1195824401, now seen corresponding path program 3 times [2024-06-21 15:47:27,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:47:27,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659418290] [2024-06-21 15:47:27,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:47:27,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:47:27,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:47:29,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:47:29,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:47:29,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659418290] [2024-06-21 15:47:29,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659418290] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:47:29,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:47:29,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:47:29,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316729182] [2024-06-21 15:47:29,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:47:29,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:47:29,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:47:29,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:47:29,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:47:29,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:47:29,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 310 transitions, 3871 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:29,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:47:29,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:47:29,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:47:29,999 INFO L124 PetriNetUnfolderBase]: 840/1570 cut-off events. [2024-06-21 15:47:29,999 INFO L125 PetriNetUnfolderBase]: For 82624/82624 co-relation queries the response was YES. [2024-06-21 15:47:30,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9293 conditions, 1570 events. 840/1570 cut-off events. For 82624/82624 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 9256 event pairs, 166 based on Foata normal form. 1/1570 useless extension candidates. Maximal degree in co-relation 9106. Up to 1369 conditions per place. [2024-06-21 15:47:30,018 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 253 selfloop transitions, 68 changer transitions 2/325 dead transitions. [2024-06-21 15:47:30,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 325 transitions, 4567 flow [2024-06-21 15:47:30,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:47:30,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:47:30,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-21 15:47:30,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-21 15:47:30,019 INFO L175 Difference]: Start difference. First operand has 408 places, 310 transitions, 3871 flow. Second operand 10 states and 112 transitions. [2024-06-21 15:47:30,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 325 transitions, 4567 flow [2024-06-21 15:47:30,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 325 transitions, 4353 flow, removed 32 selfloop flow, removed 14 redundant places. [2024-06-21 15:47:30,643 INFO L231 Difference]: Finished difference. Result has 404 places, 310 transitions, 3804 flow [2024-06-21 15:47:30,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3657, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3804, PETRI_PLACES=404, PETRI_TRANSITIONS=310} [2024-06-21 15:47:30,643 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 374 predicate places. [2024-06-21 15:47:30,643 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 310 transitions, 3804 flow [2024-06-21 15:47:30,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:30,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:47:30,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:47:30,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-21 15:47:30,644 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)] === [2024-06-21 15:47:30,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:47:30,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1195974348, now seen corresponding path program 22 times [2024-06-21 15:47:30,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:47:30,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444327123] [2024-06-21 15:47:30,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:47:30,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:47:30,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:47:31,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:47:31,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:47:31,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444327123] [2024-06-21 15:47:31,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444327123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:47:31,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:47:31,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:47:31,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308422665] [2024-06-21 15:47:31,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:47:31,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:47:31,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:47:31,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:47:31,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:47:31,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:47:31,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 310 transitions, 3804 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:31,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:47:31,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:47:31,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:47:32,504 INFO L124 PetriNetUnfolderBase]: 844/1578 cut-off events. [2024-06-21 15:47:32,504 INFO L125 PetriNetUnfolderBase]: For 89142/89142 co-relation queries the response was YES. [2024-06-21 15:47:32,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9274 conditions, 1578 events. 844/1578 cut-off events. For 89142/89142 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 9302 event pairs, 156 based on Foata normal form. 2/1579 useless extension candidates. Maximal degree in co-relation 9091. Up to 1375 conditions per place. [2024-06-21 15:47:32,520 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 269 selfloop transitions, 55 changer transitions 0/326 dead transitions. [2024-06-21 15:47:32,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 326 transitions, 4532 flow [2024-06-21 15:47:32,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:47:32,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:47:32,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-21 15:47:32,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-21 15:47:32,520 INFO L175 Difference]: Start difference. First operand has 404 places, 310 transitions, 3804 flow. Second operand 10 states and 106 transitions. [2024-06-21 15:47:32,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 326 transitions, 4532 flow [2024-06-21 15:47:33,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 326 transitions, 4337 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-21 15:47:33,027 INFO L231 Difference]: Finished difference. Result has 403 places, 311 transitions, 3770 flow [2024-06-21 15:47:33,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3609, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3770, PETRI_PLACES=403, PETRI_TRANSITIONS=311} [2024-06-21 15:47:33,027 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 373 predicate places. [2024-06-21 15:47:33,027 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 311 transitions, 3770 flow [2024-06-21 15:47:33,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:33,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:47:33,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:47:33,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-21 15:47:33,028 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)] === [2024-06-21 15:47:33,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:47:33,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1195824618, now seen corresponding path program 23 times [2024-06-21 15:47:33,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:47:33,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265019750] [2024-06-21 15:47:33,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:47:33,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:47:33,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:47:34,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:47:34,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:47:34,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265019750] [2024-06-21 15:47:34,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265019750] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:47:34,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:47:34,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:47:34,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607324486] [2024-06-21 15:47:34,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:47:34,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:47:34,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:47:34,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:47:34,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:47:34,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:47:34,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 311 transitions, 3770 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:34,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:47:34,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:47:34,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:47:35,121 INFO L124 PetriNetUnfolderBase]: 848/1586 cut-off events. [2024-06-21 15:47:35,121 INFO L125 PetriNetUnfolderBase]: For 89907/89907 co-relation queries the response was YES. [2024-06-21 15:47:35,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9318 conditions, 1586 events. 848/1586 cut-off events. For 89907/89907 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 9375 event pairs, 170 based on Foata normal form. 2/1587 useless extension candidates. Maximal degree in co-relation 9135. Up to 1390 conditions per place. [2024-06-21 15:47:35,138 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 260 selfloop transitions, 64 changer transitions 1/327 dead transitions. [2024-06-21 15:47:35,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 327 transitions, 4510 flow [2024-06-21 15:47:35,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:47:35,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:47:35,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-21 15:47:35,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-21 15:47:35,139 INFO L175 Difference]: Start difference. First operand has 403 places, 311 transitions, 3770 flow. Second operand 10 states and 110 transitions. [2024-06-21 15:47:35,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 327 transitions, 4510 flow [2024-06-21 15:47:35,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 327 transitions, 4361 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-21 15:47:35,783 INFO L231 Difference]: Finished difference. Result has 405 places, 312 transitions, 3801 flow [2024-06-21 15:47:35,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3623, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3801, PETRI_PLACES=405, PETRI_TRANSITIONS=312} [2024-06-21 15:47:35,784 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 375 predicate places. [2024-06-21 15:47:35,784 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 312 transitions, 3801 flow [2024-06-21 15:47:35,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:35,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:47:35,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:47:35,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-21 15:47:35,784 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)] === [2024-06-21 15:47:35,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:47:35,784 INFO L85 PathProgramCache]: Analyzing trace with hash -827689812, now seen corresponding path program 24 times [2024-06-21 15:47:35,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:47:35,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879509653] [2024-06-21 15:47:35,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:47:35,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:47:35,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:47:36,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:47:36,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:47:36,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879509653] [2024-06-21 15:47:36,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879509653] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:47:36,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:47:36,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:47:36,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111152110] [2024-06-21 15:47:36,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:47:36,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:47:36,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:47:36,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:47:36,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:47:36,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:47:36,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 312 transitions, 3801 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:36,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:47:36,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:47:36,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:47:37,505 INFO L124 PetriNetUnfolderBase]: 852/1594 cut-off events. [2024-06-21 15:47:37,505 INFO L125 PetriNetUnfolderBase]: For 90325/90325 co-relation queries the response was YES. [2024-06-21 15:47:37,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9373 conditions, 1594 events. 852/1594 cut-off events. For 90325/90325 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 9424 event pairs, 130 based on Foata normal form. 2/1595 useless extension candidates. Maximal degree in co-relation 9189. Up to 1369 conditions per place. [2024-06-21 15:47:37,525 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 279 selfloop transitions, 50 changer transitions 0/331 dead transitions. [2024-06-21 15:47:37,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 331 transitions, 4560 flow [2024-06-21 15:47:37,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:47:37,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:47:37,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-21 15:47:37,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-21 15:47:37,525 INFO L175 Difference]: Start difference. First operand has 405 places, 312 transitions, 3801 flow. Second operand 10 states and 107 transitions. [2024-06-21 15:47:37,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 331 transitions, 4560 flow [2024-06-21 15:47:38,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 331 transitions, 4392 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-21 15:47:38,105 INFO L231 Difference]: Finished difference. Result has 407 places, 313 transitions, 3785 flow [2024-06-21 15:47:38,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3635, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3785, PETRI_PLACES=407, PETRI_TRANSITIONS=313} [2024-06-21 15:47:38,106 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 377 predicate places. [2024-06-21 15:47:38,106 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 313 transitions, 3785 flow [2024-06-21 15:47:38,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:38,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:47:38,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:47:38,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-21 15:47:38,106 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)] === [2024-06-21 15:47:38,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:47:38,106 INFO L85 PathProgramCache]: Analyzing trace with hash -823965162, now seen corresponding path program 25 times [2024-06-21 15:47:38,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:47:38,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169514330] [2024-06-21 15:47:38,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:47:38,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:47:38,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:47:39,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:47:39,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:47:39,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169514330] [2024-06-21 15:47:39,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169514330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:47:39,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:47:39,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:47:39,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78547977] [2024-06-21 15:47:39,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:47:39,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:47:39,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:47:39,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:47:39,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:47:39,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:47:39,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 313 transitions, 3785 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:39,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:47:39,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:47:39,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:47:39,996 INFO L124 PetriNetUnfolderBase]: 856/1602 cut-off events. [2024-06-21 15:47:39,996 INFO L125 PetriNetUnfolderBase]: For 90371/90371 co-relation queries the response was YES. [2024-06-21 15:47:40,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9386 conditions, 1602 events. 856/1602 cut-off events. For 90371/90371 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 9491 event pairs, 183 based on Foata normal form. 2/1603 useless extension candidates. Maximal degree in co-relation 9201. Up to 1424 conditions per place. [2024-06-21 15:47:40,016 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 266 selfloop transitions, 63 changer transitions 0/331 dead transitions. [2024-06-21 15:47:40,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 331 transitions, 4550 flow [2024-06-21 15:47:40,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:47:40,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:47:40,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-21 15:47:40,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-21 15:47:40,017 INFO L175 Difference]: Start difference. First operand has 407 places, 313 transitions, 3785 flow. Second operand 10 states and 110 transitions. [2024-06-21 15:47:40,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 331 transitions, 4550 flow [2024-06-21 15:47:40,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 331 transitions, 4410 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-21 15:47:40,751 INFO L231 Difference]: Finished difference. Result has 409 places, 314 transitions, 3824 flow [2024-06-21 15:47:40,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3647, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3824, PETRI_PLACES=409, PETRI_TRANSITIONS=314} [2024-06-21 15:47:40,752 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 379 predicate places. [2024-06-21 15:47:40,752 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 314 transitions, 3824 flow [2024-06-21 15:47:40,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:40,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:47:40,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:47:40,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-21 15:47:40,752 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)] === [2024-06-21 15:47:40,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:47:40,752 INFO L85 PathProgramCache]: Analyzing trace with hash -823964945, now seen corresponding path program 4 times [2024-06-21 15:47:40,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:47:40,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557845093] [2024-06-21 15:47:40,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:47:40,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:47:40,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:47:42,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:47:42,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:47:42,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557845093] [2024-06-21 15:47:42,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557845093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:47:42,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:47:42,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:47:42,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116055278] [2024-06-21 15:47:42,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:47:42,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:47:42,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:47:42,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:47:42,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:47:42,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:47:42,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 314 transitions, 3824 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:42,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:47:42,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:47:42,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:47:43,061 INFO L124 PetriNetUnfolderBase]: 854/1599 cut-off events. [2024-06-21 15:47:43,061 INFO L125 PetriNetUnfolderBase]: For 78724/78724 co-relation queries the response was YES. [2024-06-21 15:47:43,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9190 conditions, 1599 events. 854/1599 cut-off events. For 78724/78724 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 9472 event pairs, 183 based on Foata normal form. 1/1599 useless extension candidates. Maximal degree in co-relation 9004. Up to 1421 conditions per place. [2024-06-21 15:47:43,080 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 262 selfloop transitions, 67 changer transitions 0/331 dead transitions. [2024-06-21 15:47:43,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 331 transitions, 4549 flow [2024-06-21 15:47:43,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:47:43,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:47:43,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-21 15:47:43,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-21 15:47:43,081 INFO L175 Difference]: Start difference. First operand has 409 places, 314 transitions, 3824 flow. Second operand 10 states and 111 transitions. [2024-06-21 15:47:43,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 331 transitions, 4549 flow [2024-06-21 15:47:43,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 331 transitions, 4380 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-21 15:47:43,827 INFO L231 Difference]: Finished difference. Result has 411 places, 314 transitions, 3801 flow [2024-06-21 15:47:43,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3655, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3801, PETRI_PLACES=411, PETRI_TRANSITIONS=314} [2024-06-21 15:47:43,828 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 381 predicate places. [2024-06-21 15:47:43,828 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 314 transitions, 3801 flow [2024-06-21 15:47:43,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:43,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:47:43,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:47:43,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-21 15:47:43,828 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)] === [2024-06-21 15:47:43,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:47:43,829 INFO L85 PathProgramCache]: Analyzing trace with hash -824114892, now seen corresponding path program 26 times [2024-06-21 15:47:43,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:47:43,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879074399] [2024-06-21 15:47:43,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:47:43,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:47:43,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:47:44,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:47:44,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:47:44,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879074399] [2024-06-21 15:47:44,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879074399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:47:44,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:47:44,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:47:44,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069392578] [2024-06-21 15:47:44,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:47:44,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:47:44,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:47:44,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:47:44,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:47:44,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:47:44,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 314 transitions, 3801 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:44,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:47:44,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:47:44,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:47:45,429 INFO L124 PetriNetUnfolderBase]: 858/1607 cut-off events. [2024-06-21 15:47:45,429 INFO L125 PetriNetUnfolderBase]: For 83926/83926 co-relation queries the response was YES. [2024-06-21 15:47:45,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9225 conditions, 1607 events. 858/1607 cut-off events. For 83926/83926 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 9554 event pairs, 177 based on Foata normal form. 2/1608 useless extension candidates. Maximal degree in co-relation 9038. Up to 1431 conditions per place. [2024-06-21 15:47:45,449 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 279 selfloop transitions, 52 changer transitions 0/333 dead transitions. [2024-06-21 15:47:45,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 333 transitions, 4566 flow [2024-06-21 15:47:45,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:47:45,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:47:45,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-21 15:47:45,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-21 15:47:45,450 INFO L175 Difference]: Start difference. First operand has 411 places, 314 transitions, 3801 flow. Second operand 10 states and 108 transitions. [2024-06-21 15:47:45,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 333 transitions, 4566 flow [2024-06-21 15:47:46,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 333 transitions, 4131 flow, removed 17 selfloop flow, removed 13 redundant places. [2024-06-21 15:47:46,142 INFO L231 Difference]: Finished difference. Result has 408 places, 315 transitions, 3520 flow [2024-06-21 15:47:46,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3366, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3520, PETRI_PLACES=408, PETRI_TRANSITIONS=315} [2024-06-21 15:47:46,142 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 378 predicate places. [2024-06-21 15:47:46,142 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 315 transitions, 3520 flow [2024-06-21 15:47:46,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:46,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:47:46,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:47:46,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-21 15:47:46,143 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)] === [2024-06-21 15:47:46,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:47:46,143 INFO L85 PathProgramCache]: Analyzing trace with hash -823970742, now seen corresponding path program 27 times [2024-06-21 15:47:46,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:47:46,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140887418] [2024-06-21 15:47:46,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:47:46,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:47:46,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:47:47,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:47:47,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:47:47,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140887418] [2024-06-21 15:47:47,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140887418] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:47:47,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:47:47,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:47:47,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591570708] [2024-06-21 15:47:47,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:47:47,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:47:47,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:47:47,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:47:47,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:47:47,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:47:47,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 315 transitions, 3520 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:47,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:47:47,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:47:47,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:47:47,979 INFO L124 PetriNetUnfolderBase]: 862/1615 cut-off events. [2024-06-21 15:47:47,980 INFO L125 PetriNetUnfolderBase]: For 83585/83585 co-relation queries the response was YES. [2024-06-21 15:47:47,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8954 conditions, 1615 events. 862/1615 cut-off events. For 83585/83585 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 9620 event pairs, 181 based on Foata normal form. 2/1616 useless extension candidates. Maximal degree in co-relation 8769. Up to 1433 conditions per place. [2024-06-21 15:47:47,999 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 274 selfloop transitions, 58 changer transitions 0/334 dead transitions. [2024-06-21 15:47:47,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 334 transitions, 4293 flow [2024-06-21 15:47:47,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:47:47,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:47:47,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-21 15:47:47,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-21 15:47:48,000 INFO L175 Difference]: Start difference. First operand has 408 places, 315 transitions, 3520 flow. Second operand 10 states and 109 transitions. [2024-06-21 15:47:48,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 334 transitions, 4293 flow [2024-06-21 15:47:48,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 334 transitions, 4149 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-21 15:47:48,548 INFO L231 Difference]: Finished difference. Result has 410 places, 316 transitions, 3544 flow [2024-06-21 15:47:48,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3378, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3544, PETRI_PLACES=410, PETRI_TRANSITIONS=316} [2024-06-21 15:47:48,549 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 380 predicate places. [2024-06-21 15:47:48,549 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 316 transitions, 3544 flow [2024-06-21 15:47:48,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:48,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:47:48,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:47:48,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-21 15:47:48,549 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)] === [2024-06-21 15:47:48,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:47:48,549 INFO L85 PathProgramCache]: Analyzing trace with hash 372144662, now seen corresponding path program 28 times [2024-06-21 15:47:48,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:47:48,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682861255] [2024-06-21 15:47:48,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:47:48,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:47:48,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:47:49,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:47:49,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:47:49,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682861255] [2024-06-21 15:47:49,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682861255] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:47:49,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:47:49,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:47:49,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758151387] [2024-06-21 15:47:49,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:47:49,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:47:49,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:47:49,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:47:49,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:47:49,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:47:49,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 316 transitions, 3544 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:49,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:47:49,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:47:49,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:47:50,514 INFO L124 PetriNetUnfolderBase]: 866/1625 cut-off events. [2024-06-21 15:47:50,514 INFO L125 PetriNetUnfolderBase]: For 83869/83869 co-relation queries the response was YES. [2024-06-21 15:47:50,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9001 conditions, 1625 events. 866/1625 cut-off events. For 83869/83869 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 9728 event pairs, 166 based on Foata normal form. 2/1623 useless extension candidates. Maximal degree in co-relation 8815. Up to 1343 conditions per place. [2024-06-21 15:47:50,533 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 261 selfloop transitions, 70 changer transitions 0/333 dead transitions. [2024-06-21 15:47:50,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 333 transitions, 4302 flow [2024-06-21 15:47:50,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:47:50,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:47:50,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-21 15:47:50,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-21 15:47:50,534 INFO L175 Difference]: Start difference. First operand has 410 places, 316 transitions, 3544 flow. Second operand 10 states and 110 transitions. [2024-06-21 15:47:50,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 333 transitions, 4302 flow [2024-06-21 15:47:51,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 333 transitions, 4146 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-21 15:47:51,156 INFO L231 Difference]: Finished difference. Result has 412 places, 317 transitions, 3578 flow [2024-06-21 15:47:51,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3390, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3578, PETRI_PLACES=412, PETRI_TRANSITIONS=317} [2024-06-21 15:47:51,157 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 382 predicate places. [2024-06-21 15:47:51,157 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 317 transitions, 3578 flow [2024-06-21 15:47:51,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:51,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:47:51,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:47:51,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-21 15:47:51,157 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)] === [2024-06-21 15:47:51,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:47:51,157 INFO L85 PathProgramCache]: Analyzing trace with hash 372139082, now seen corresponding path program 29 times [2024-06-21 15:47:51,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:47:51,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119160347] [2024-06-21 15:47:51,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:47:51,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:47:51,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:47:52,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:47:52,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:47:52,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119160347] [2024-06-21 15:47:52,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119160347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:47:52,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:47:52,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:47:52,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221372023] [2024-06-21 15:47:52,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:47:52,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:47:52,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:47:52,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:47:52,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:47:52,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:47:52,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 317 transitions, 3578 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:52,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:47:52,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:47:52,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:47:53,017 INFO L124 PetriNetUnfolderBase]: 899/1690 cut-off events. [2024-06-21 15:47:53,017 INFO L125 PetriNetUnfolderBase]: For 136294/136294 co-relation queries the response was YES. [2024-06-21 15:47:53,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10327 conditions, 1690 events. 899/1690 cut-off events. For 136294/136294 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 10123 event pairs, 202 based on Foata normal form. 2/1688 useless extension candidates. Maximal degree in co-relation 10140. Up to 1431 conditions per place. [2024-06-21 15:47:53,038 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 292 selfloop transitions, 50 changer transitions 1/345 dead transitions. [2024-06-21 15:47:53,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 345 transitions, 4661 flow [2024-06-21 15:47:53,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 15:47:53,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 15:47:53,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-21 15:47:53,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34946236559139787 [2024-06-21 15:47:53,041 INFO L175 Difference]: Start difference. First operand has 412 places, 317 transitions, 3578 flow. Second operand 12 states and 130 transitions. [2024-06-21 15:47:53,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 345 transitions, 4661 flow [2024-06-21 15:47:53,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 345 transitions, 4505 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-21 15:47:53,846 INFO L231 Difference]: Finished difference. Result has 420 places, 325 transitions, 3668 flow [2024-06-21 15:47:53,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3426, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3668, PETRI_PLACES=420, PETRI_TRANSITIONS=325} [2024-06-21 15:47:53,847 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 390 predicate places. [2024-06-21 15:47:53,847 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 325 transitions, 3668 flow [2024-06-21 15:47:53,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:53,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:47:53,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:47:53,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-21 15:47:53,848 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:47:53,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:47:53,848 INFO L85 PathProgramCache]: Analyzing trace with hash 379496312, now seen corresponding path program 30 times [2024-06-21 15:47:53,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:47:53,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416409826] [2024-06-21 15:47:53,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:47:53,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:47:53,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:47:55,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:47:55,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:47:55,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416409826] [2024-06-21 15:47:55,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416409826] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:47:55,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:47:55,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:47:55,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34196382] [2024-06-21 15:47:55,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:47:55,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:47:55,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:47:55,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:47:55,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:47:55,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:47:55,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 325 transitions, 3668 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:55,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:47:55,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:47:55,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:47:55,695 INFO L124 PetriNetUnfolderBase]: 901/1698 cut-off events. [2024-06-21 15:47:55,695 INFO L125 PetriNetUnfolderBase]: For 140838/140838 co-relation queries the response was YES. [2024-06-21 15:47:55,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10639 conditions, 1698 events. 901/1698 cut-off events. For 140838/140838 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 10222 event pairs, 191 based on Foata normal form. 2/1696 useless extension candidates. Maximal degree in co-relation 10448. Up to 1418 conditions per place. [2024-06-21 15:47:55,716 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 264 selfloop transitions, 76 changer transitions 0/342 dead transitions. [2024-06-21 15:47:55,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 342 transitions, 4470 flow [2024-06-21 15:47:55,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:47:55,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:47:55,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-21 15:47:55,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-21 15:47:55,717 INFO L175 Difference]: Start difference. First operand has 420 places, 325 transitions, 3668 flow. Second operand 10 states and 109 transitions. [2024-06-21 15:47:55,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 342 transitions, 4470 flow [2024-06-21 15:47:56,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 342 transitions, 4355 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-21 15:47:56,564 INFO L231 Difference]: Finished difference. Result has 424 places, 326 transitions, 3757 flow [2024-06-21 15:47:56,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3553, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3757, PETRI_PLACES=424, PETRI_TRANSITIONS=326} [2024-06-21 15:47:56,565 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 394 predicate places. [2024-06-21 15:47:56,565 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 326 transitions, 3757 flow [2024-06-21 15:47:56,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:56,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:47:56,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:47:56,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-21 15:47:56,566 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:47:56,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:47:56,566 INFO L85 PathProgramCache]: Analyzing trace with hash 379504248, now seen corresponding path program 7 times [2024-06-21 15:47:56,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:47:56,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739736677] [2024-06-21 15:47:56,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:47:56,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:47:56,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:47:58,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:47:58,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:47:58,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739736677] [2024-06-21 15:47:58,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739736677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:47:58,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:47:58,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:47:58,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229605188] [2024-06-21 15:47:58,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:47:58,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:47:58,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:47:58,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:47:58,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:47:58,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:47:58,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 326 transitions, 3757 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:58,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:47:58,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:47:58,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:47:58,776 INFO L124 PetriNetUnfolderBase]: 917/1734 cut-off events. [2024-06-21 15:47:58,776 INFO L125 PetriNetUnfolderBase]: For 185946/185946 co-relation queries the response was YES. [2024-06-21 15:47:58,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10823 conditions, 1734 events. 917/1734 cut-off events. For 185946/185946 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 10480 event pairs, 197 based on Foata normal form. 10/1740 useless extension candidates. Maximal degree in co-relation 10632. Up to 1362 conditions per place. [2024-06-21 15:47:58,797 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 258 selfloop transitions, 77 changer transitions 9/346 dead transitions. [2024-06-21 15:47:58,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 346 transitions, 4565 flow [2024-06-21 15:47:58,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:47:58,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:47:58,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-21 15:47:58,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-21 15:47:58,798 INFO L175 Difference]: Start difference. First operand has 424 places, 326 transitions, 3757 flow. Second operand 10 states and 115 transitions. [2024-06-21 15:47:58,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 346 transitions, 4565 flow [2024-06-21 15:47:59,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 346 transitions, 4371 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-21 15:47:59,809 INFO L231 Difference]: Finished difference. Result has 426 places, 321 transitions, 3680 flow [2024-06-21 15:47:59,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3563, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3680, PETRI_PLACES=426, PETRI_TRANSITIONS=321} [2024-06-21 15:47:59,809 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 396 predicate places. [2024-06-21 15:47:59,809 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 321 transitions, 3680 flow [2024-06-21 15:47:59,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:59,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:47:59,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:47:59,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-21 15:47:59,810 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:47:59,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:47:59,810 INFO L85 PathProgramCache]: Analyzing trace with hash 372354408, now seen corresponding path program 8 times [2024-06-21 15:47:59,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:47:59,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717767048] [2024-06-21 15:47:59,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:47:59,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:47:59,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:48:00,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:48:00,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:48:00,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717767048] [2024-06-21 15:48:00,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717767048] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:48:00,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:48:00,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:48:00,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920914084] [2024-06-21 15:48:00,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:48:00,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:48:00,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:48:00,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:48:00,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:48:00,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:48:00,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 321 transitions, 3680 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:48:00,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:48:00,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:48:00,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:48:01,532 INFO L124 PetriNetUnfolderBase]: 889/1690 cut-off events. [2024-06-21 15:48:01,532 INFO L125 PetriNetUnfolderBase]: For 165951/165951 co-relation queries the response was YES. [2024-06-21 15:48:01,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10110 conditions, 1690 events. 889/1690 cut-off events. For 165951/165951 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 10237 event pairs, 191 based on Foata normal form. 10/1696 useless extension candidates. Maximal degree in co-relation 9918. Up to 1392 conditions per place. [2024-06-21 15:48:01,552 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 261 selfloop transitions, 63 changer transitions 17/343 dead transitions. [2024-06-21 15:48:01,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 343 transitions, 4496 flow [2024-06-21 15:48:01,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:48:01,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:48:01,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-21 15:48:01,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-21 15:48:01,553 INFO L175 Difference]: Start difference. First operand has 426 places, 321 transitions, 3680 flow. Second operand 11 states and 121 transitions. [2024-06-21 15:48:01,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 343 transitions, 4496 flow [2024-06-21 15:48:02,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 343 transitions, 4336 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-21 15:48:02,405 INFO L231 Difference]: Finished difference. Result has 425 places, 314 transitions, 3577 flow [2024-06-21 15:48:02,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3520, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3577, PETRI_PLACES=425, PETRI_TRANSITIONS=314} [2024-06-21 15:48:02,405 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 395 predicate places. [2024-06-21 15:48:02,405 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 314 transitions, 3577 flow [2024-06-21 15:48:02,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:48:02,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:48:02,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:48:02,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-21 15:48:02,406 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:48:02,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:48:02,406 INFO L85 PathProgramCache]: Analyzing trace with hash 379773018, now seen corresponding path program 9 times [2024-06-21 15:48:02,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:48:02,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27031019] [2024-06-21 15:48:02,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:48:02,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:48:02,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:48:03,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:48:03,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:48:03,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27031019] [2024-06-21 15:48:03,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27031019] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:48:03,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:48:03,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:48:03,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764428507] [2024-06-21 15:48:03,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:48:03,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:48:03,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:48:03,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:48:03,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:48:03,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:48:03,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 314 transitions, 3577 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:48:03,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:48:03,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:48:03,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:48:04,400 INFO L124 PetriNetUnfolderBase]: 905/1730 cut-off events. [2024-06-21 15:48:04,400 INFO L125 PetriNetUnfolderBase]: For 220006/220006 co-relation queries the response was YES. [2024-06-21 15:48:04,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11531 conditions, 1730 events. 905/1730 cut-off events. For 220006/220006 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 10487 event pairs, 197 based on Foata normal form. 8/1734 useless extension candidates. Maximal degree in co-relation 11340. Up to 1248 conditions per place. [2024-06-21 15:48:04,418 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 259 selfloop transitions, 70 changer transitions 11/342 dead transitions. [2024-06-21 15:48:04,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 342 transitions, 4683 flow [2024-06-21 15:48:04,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:48:04,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:48:04,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-21 15:48:04,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-06-21 15:48:04,419 INFO L175 Difference]: Start difference. First operand has 425 places, 314 transitions, 3577 flow. Second operand 11 states and 125 transitions. [2024-06-21 15:48:04,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 342 transitions, 4683 flow [2024-06-21 15:48:05,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 342 transitions, 4506 flow, removed 10 selfloop flow, removed 13 redundant places. [2024-06-21 15:48:05,558 INFO L231 Difference]: Finished difference. Result has 417 places, 308 transitions, 3488 flow [2024-06-21 15:48:05,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3410, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3488, PETRI_PLACES=417, PETRI_TRANSITIONS=308} [2024-06-21 15:48:05,558 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 387 predicate places. [2024-06-21 15:48:05,558 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 308 transitions, 3488 flow [2024-06-21 15:48:05,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:48:05,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:48:05,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:48:05,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-21 15:48:05,558 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:48:05,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:48:05,559 INFO L85 PathProgramCache]: Analyzing trace with hash 172837292, now seen corresponding path program 31 times [2024-06-21 15:48:05,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:48:05,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709933085] [2024-06-21 15:48:05,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:48:05,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:48:05,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:48:06,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:48:06,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:48:06,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709933085] [2024-06-21 15:48:06,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709933085] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:48:06,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:48:06,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:48:06,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581856831] [2024-06-21 15:48:06,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:48:06,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:48:06,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:48:06,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:48:06,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:48:06,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:48:06,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 308 transitions, 3488 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:48:06,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:48:06,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:48:06,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:48:07,300 INFO L124 PetriNetUnfolderBase]: 863/1644 cut-off events. [2024-06-21 15:48:07,300 INFO L125 PetriNetUnfolderBase]: For 178201/178201 co-relation queries the response was YES. [2024-06-21 15:48:07,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11092 conditions, 1644 events. 863/1644 cut-off events. For 178201/178201 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 9863 event pairs, 191 based on Foata normal form. 2/1642 useless extension candidates. Maximal degree in co-relation 10904. Up to 1424 conditions per place. [2024-06-21 15:48:07,321 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 269 selfloop transitions, 58 changer transitions 0/329 dead transitions. [2024-06-21 15:48:07,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 329 transitions, 4520 flow [2024-06-21 15:48:07,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:48:07,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:48:07,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-21 15:48:07,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-21 15:48:07,322 INFO L175 Difference]: Start difference. First operand has 417 places, 308 transitions, 3488 flow. Second operand 10 states and 109 transitions. [2024-06-21 15:48:07,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 329 transitions, 4520 flow [2024-06-21 15:48:08,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 329 transitions, 4365 flow, removed 11 selfloop flow, removed 12 redundant places. [2024-06-21 15:48:08,239 INFO L231 Difference]: Finished difference. Result has 410 places, 310 transitions, 3557 flow [2024-06-21 15:48:08,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3341, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3557, PETRI_PLACES=410, PETRI_TRANSITIONS=310} [2024-06-21 15:48:08,239 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 380 predicate places. [2024-06-21 15:48:08,239 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 310 transitions, 3557 flow [2024-06-21 15:48:08,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:48:08,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:48:08,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:48:08,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-21 15:48:08,240 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:48:08,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:48:08,240 INFO L85 PathProgramCache]: Analyzing trace with hash -679864886, now seen corresponding path program 10 times [2024-06-21 15:48:08,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:48:08,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153032831] [2024-06-21 15:48:08,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:48:08,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:48:08,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:48:09,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:48:09,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:48:09,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153032831] [2024-06-21 15:48:09,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153032831] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:48:09,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:48:09,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:48:09,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107620826] [2024-06-21 15:48:09,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:48:09,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:48:09,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:48:09,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:48:09,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:48:09,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:48:09,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 310 transitions, 3557 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:48:09,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:48:09,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:48:09,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:48:10,146 INFO L124 PetriNetUnfolderBase]: 879/1680 cut-off events. [2024-06-21 15:48:10,146 INFO L125 PetriNetUnfolderBase]: For 209404/209404 co-relation queries the response was YES. [2024-06-21 15:48:10,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11131 conditions, 1680 events. 879/1680 cut-off events. For 209404/209404 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 10099 event pairs, 209 based on Foata normal form. 10/1686 useless extension candidates. Maximal degree in co-relation 10946. Up to 1472 conditions per place. [2024-06-21 15:48:10,166 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 268 selfloop transitions, 46 changer transitions 17/333 dead transitions. [2024-06-21 15:48:10,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 333 transitions, 4354 flow [2024-06-21 15:48:10,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:48:10,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:48:10,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-21 15:48:10,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36774193548387096 [2024-06-21 15:48:10,167 INFO L175 Difference]: Start difference. First operand has 410 places, 310 transitions, 3557 flow. Second operand 10 states and 114 transitions. [2024-06-21 15:48:10,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 333 transitions, 4354 flow [2024-06-21 15:48:11,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 333 transitions, 4232 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-21 15:48:11,135 INFO L231 Difference]: Finished difference. Result has 414 places, 302 transitions, 3429 flow [2024-06-21 15:48:11,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3435, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3429, PETRI_PLACES=414, PETRI_TRANSITIONS=302} [2024-06-21 15:48:11,135 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 384 predicate places. [2024-06-21 15:48:11,135 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 302 transitions, 3429 flow [2024-06-21 15:48:11,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:48:11,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:48:11,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:48:11,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-21 15:48:11,135 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:48:11,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:48:11,136 INFO L85 PathProgramCache]: Analyzing trace with hash 178407062, now seen corresponding path program 32 times [2024-06-21 15:48:11,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:48:11,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951471664] [2024-06-21 15:48:11,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:48:11,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:48:11,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:48:12,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:48:12,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:48:12,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951471664] [2024-06-21 15:48:12,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951471664] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:48:12,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:48:12,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:48:12,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68324303] [2024-06-21 15:48:12,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:48:12,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:48:12,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:48:12,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:48:12,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:48:12,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:48:12,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 302 transitions, 3429 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:48:12,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:48:12,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:48:12,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:48:13,197 INFO L124 PetriNetUnfolderBase]: 840/1607 cut-off events. [2024-06-21 15:48:13,197 INFO L125 PetriNetUnfolderBase]: For 161185/161185 co-relation queries the response was YES. [2024-06-21 15:48:13,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10539 conditions, 1607 events. 840/1607 cut-off events. For 161185/161185 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 9596 event pairs, 200 based on Foata normal form. 2/1605 useless extension candidates. Maximal degree in co-relation 10352. Up to 1418 conditions per place. [2024-06-21 15:48:13,217 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 262 selfloop transitions, 56 changer transitions 0/320 dead transitions. [2024-06-21 15:48:13,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 320 transitions, 4153 flow [2024-06-21 15:48:13,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:48:13,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:48:13,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-21 15:48:13,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-21 15:48:13,218 INFO L175 Difference]: Start difference. First operand has 414 places, 302 transitions, 3429 flow. Second operand 10 states and 107 transitions. [2024-06-21 15:48:13,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 320 transitions, 4153 flow [2024-06-21 15:48:14,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 320 transitions, 3959 flow, removed 28 selfloop flow, removed 13 redundant places. [2024-06-21 15:48:14,236 INFO L231 Difference]: Finished difference. Result has 407 places, 302 transitions, 3351 flow [2024-06-21 15:48:14,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3235, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3351, PETRI_PLACES=407, PETRI_TRANSITIONS=302} [2024-06-21 15:48:14,236 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 377 predicate places. [2024-06-21 15:48:14,236 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 302 transitions, 3351 flow [2024-06-21 15:48:14,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:48:14,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:48:14,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:48:14,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-21 15:48:14,237 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:48:14,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:48:14,238 INFO L85 PathProgramCache]: Analyzing trace with hash 178414998, now seen corresponding path program 11 times [2024-06-21 15:48:14,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:48:14,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539743322] [2024-06-21 15:48:14,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:48:14,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:48:14,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:48:15,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:48:15,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:48:15,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539743322] [2024-06-21 15:48:15,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539743322] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:48:15,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:48:15,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:48:15,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885241845] [2024-06-21 15:48:15,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:48:15,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:48:15,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:48:15,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:48:15,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:48:15,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:48:15,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 302 transitions, 3351 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:48:15,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:48:15,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:48:15,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:48:15,807 INFO L124 PetriNetUnfolderBase]: 842/1617 cut-off events. [2024-06-21 15:48:15,808 INFO L125 PetriNetUnfolderBase]: For 176208/176208 co-relation queries the response was YES. [2024-06-21 15:48:15,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9966 conditions, 1617 events. 842/1617 cut-off events. For 176208/176208 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 9694 event pairs, 198 based on Foata normal form. 10/1623 useless extension candidates. Maximal degree in co-relation 9782. Up to 1374 conditions per place. [2024-06-21 15:48:15,827 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 256 selfloop transitions, 51 changer transitions 15/324 dead transitions. [2024-06-21 15:48:15,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 324 transitions, 4125 flow [2024-06-21 15:48:15,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:48:15,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:48:15,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-21 15:48:15,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-21 15:48:15,828 INFO L175 Difference]: Start difference. First operand has 407 places, 302 transitions, 3351 flow. Second operand 10 states and 112 transitions. [2024-06-21 15:48:15,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 324 transitions, 4125 flow [2024-06-21 15:48:16,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 324 transitions, 4005 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-21 15:48:16,573 INFO L231 Difference]: Finished difference. Result has 407 places, 295 transitions, 3274 flow [2024-06-21 15:48:16,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3231, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3274, PETRI_PLACES=407, PETRI_TRANSITIONS=295} [2024-06-21 15:48:16,573 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 377 predicate places. [2024-06-21 15:48:16,573 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 295 transitions, 3274 flow [2024-06-21 15:48:16,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:48:16,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:48:16,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:48:16,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-21 15:48:16,574 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:48:16,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:48:16,574 INFO L85 PathProgramCache]: Analyzing trace with hash 172693142, now seen corresponding path program 33 times [2024-06-21 15:48:16,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:48:16,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401061754] [2024-06-21 15:48:16,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:48:16,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:48:16,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:48:17,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:48:17,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:48:17,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401061754] [2024-06-21 15:48:17,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401061754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:48:17,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:48:17,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:48:17,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722118666] [2024-06-21 15:48:17,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:48:17,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:48:17,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:48:17,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:48:17,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:48:18,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:48:18,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 295 transitions, 3274 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:48:18,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:48:18,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:48:18,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:48:18,541 INFO L124 PetriNetUnfolderBase]: 810/1557 cut-off events. [2024-06-21 15:48:18,541 INFO L125 PetriNetUnfolderBase]: For 137880/137880 co-relation queries the response was YES. [2024-06-21 15:48:18,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9746 conditions, 1557 events. 810/1557 cut-off events. For 137880/137880 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 9281 event pairs, 184 based on Foata normal form. 2/1555 useless extension candidates. Maximal degree in co-relation 9562. Up to 1354 conditions per place. [2024-06-21 15:48:18,561 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 256 selfloop transitions, 55 changer transitions 0/313 dead transitions. [2024-06-21 15:48:18,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 313 transitions, 4004 flow [2024-06-21 15:48:18,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:48:18,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:48:18,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-21 15:48:18,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-21 15:48:18,562 INFO L175 Difference]: Start difference. First operand has 407 places, 295 transitions, 3274 flow. Second operand 10 states and 105 transitions. [2024-06-21 15:48:18,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 313 transitions, 4004 flow [2024-06-21 15:48:19,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 313 transitions, 3894 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-21 15:48:19,313 INFO L231 Difference]: Finished difference. Result has 401 places, 296 transitions, 3328 flow [2024-06-21 15:48:19,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3164, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3328, PETRI_PLACES=401, PETRI_TRANSITIONS=296} [2024-06-21 15:48:19,313 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 371 predicate places. [2024-06-21 15:48:19,313 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 296 transitions, 3328 flow [2024-06-21 15:48:19,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:48:19,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:48:19,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:48:19,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-21 15:48:19,314 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:48:19,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:48:19,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1236912004, now seen corresponding path program 34 times [2024-06-21 15:48:19,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:48:19,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346352871] [2024-06-21 15:48:19,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:48:19,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:48:19,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:48:20,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:48:20,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:48:20,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346352871] [2024-06-21 15:48:20,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346352871] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:48:20,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:48:20,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:48:20,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835825622] [2024-06-21 15:48:20,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:48:20,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:48:20,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:48:20,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:48:20,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:48:20,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:48:20,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 296 transitions, 3328 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:48:20,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:48:20,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:48:20,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:48:21,047 INFO L124 PetriNetUnfolderBase]: 814/1563 cut-off events. [2024-06-21 15:48:21,047 INFO L125 PetriNetUnfolderBase]: For 131003/131003 co-relation queries the response was YES. [2024-06-21 15:48:21,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9811 conditions, 1563 events. 814/1563 cut-off events. For 131003/131003 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 9323 event pairs, 195 based on Foata normal form. 2/1561 useless extension candidates. Maximal degree in co-relation 9630. Up to 1331 conditions per place. [2024-06-21 15:48:21,067 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 244 selfloop transitions, 66 changer transitions 0/312 dead transitions. [2024-06-21 15:48:21,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 312 transitions, 4078 flow [2024-06-21 15:48:21,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:48:21,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:48:21,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-21 15:48:21,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-21 15:48:21,068 INFO L175 Difference]: Start difference. First operand has 401 places, 296 transitions, 3328 flow. Second operand 10 states and 109 transitions. [2024-06-21 15:48:21,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 312 transitions, 4078 flow [2024-06-21 15:48:21,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 312 transitions, 3924 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-21 15:48:21,853 INFO L231 Difference]: Finished difference. Result has 403 places, 297 transitions, 3360 flow [2024-06-21 15:48:21,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3176, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3360, PETRI_PLACES=403, PETRI_TRANSITIONS=297} [2024-06-21 15:48:21,854 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 373 predicate places. [2024-06-21 15:48:21,854 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 297 transitions, 3360 flow [2024-06-21 15:48:21,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:48:21,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:48:21,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:48:21,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-21 15:48:21,854 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:48:21,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:48:21,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1236904068, now seen corresponding path program 12 times [2024-06-21 15:48:21,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:48:21,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002497859] [2024-06-21 15:48:21,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:48:21,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:48:21,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:48:22,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:48:22,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:48:22,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002497859] [2024-06-21 15:48:22,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002497859] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:48:22,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:48:22,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:48:22,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914768743] [2024-06-21 15:48:22,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:48:22,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:48:22,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:48:22,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:48:22,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:48:22,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:48:22,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 297 transitions, 3360 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:48:22,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:48:22,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:48:22,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:48:23,550 INFO L124 PetriNetUnfolderBase]: 830/1599 cut-off events. [2024-06-21 15:48:23,550 INFO L125 PetriNetUnfolderBase]: For 166880/166880 co-relation queries the response was YES. [2024-06-21 15:48:23,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9892 conditions, 1599 events. 830/1599 cut-off events. For 166880/166880 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 9560 event pairs, 199 based on Foata normal form. 10/1605 useless extension candidates. Maximal degree in co-relation 9710. Up to 1292 conditions per place. [2024-06-21 15:48:23,569 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 235 selfloop transitions, 64 changer transitions 15/316 dead transitions. [2024-06-21 15:48:23,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 316 transitions, 4112 flow [2024-06-21 15:48:23,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:48:23,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:48:23,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-21 15:48:23,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-21 15:48:23,570 INFO L175 Difference]: Start difference. First operand has 403 places, 297 transitions, 3360 flow. Second operand 10 states and 115 transitions. [2024-06-21 15:48:23,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 316 transitions, 4112 flow [2024-06-21 15:48:24,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 316 transitions, 3935 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-21 15:48:24,304 INFO L231 Difference]: Finished difference. Result has 405 places, 290 transitions, 3266 flow [2024-06-21 15:48:24,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3183, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3266, PETRI_PLACES=405, PETRI_TRANSITIONS=290} [2024-06-21 15:48:24,304 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 375 predicate places. [2024-06-21 15:48:24,305 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 290 transitions, 3266 flow [2024-06-21 15:48:24,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:48:24,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:48:24,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:48:24,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-21 15:48:24,305 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:48:24,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:48:24,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1244263654, now seen corresponding path program 35 times [2024-06-21 15:48:24,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:48:24,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556940425] [2024-06-21 15:48:24,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:48:24,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:48:24,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:48:25,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:48:25,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:48:25,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556940425] [2024-06-21 15:48:25,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556940425] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:48:25,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:48:25,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:48:25,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733316939] [2024-06-21 15:48:25,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:48:25,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:48:25,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:48:25,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:48:25,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:48:25,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:48:25,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 290 transitions, 3266 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:48:25,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:48:25,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:48:25,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:48:26,400 INFO L124 PetriNetUnfolderBase]: 798/1539 cut-off events. [2024-06-21 15:48:26,400 INFO L125 PetriNetUnfolderBase]: For 132419/132419 co-relation queries the response was YES. [2024-06-21 15:48:26,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9661 conditions, 1539 events. 798/1539 cut-off events. For 132419/132419 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 9170 event pairs, 197 based on Foata normal form. 2/1537 useless extension candidates. Maximal degree in co-relation 9478. Up to 1313 conditions per place. [2024-06-21 15:48:26,417 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 242 selfloop transitions, 62 changer transitions 0/306 dead transitions. [2024-06-21 15:48:26,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 306 transitions, 4004 flow [2024-06-21 15:48:26,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:48:26,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:48:26,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-21 15:48:26,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-21 15:48:26,418 INFO L175 Difference]: Start difference. First operand has 405 places, 290 transitions, 3266 flow. Second operand 10 states and 109 transitions. [2024-06-21 15:48:26,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 306 transitions, 4004 flow [2024-06-21 15:48:27,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 306 transitions, 3866 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-21 15:48:27,193 INFO L231 Difference]: Finished difference. Result has 400 places, 291 transitions, 3306 flow [2024-06-21 15:48:27,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3130, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3306, PETRI_PLACES=400, PETRI_TRANSITIONS=291} [2024-06-21 15:48:27,194 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 370 predicate places. [2024-06-21 15:48:27,194 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 291 transitions, 3306 flow [2024-06-21 15:48:27,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:48:27,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:48:27,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:48:27,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-21 15:48:27,194 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:48:27,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:48:27,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1020121438, now seen corresponding path program 13 times [2024-06-21 15:48:27,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:48:27,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677026881] [2024-06-21 15:48:27,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:48:27,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:48:27,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:48:28,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:48:28,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:48:28,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677026881] [2024-06-21 15:48:28,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677026881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:48:28,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:48:28,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:48:28,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474743753] [2024-06-21 15:48:28,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:48:28,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:48:28,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:48:28,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:48:28,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:48:28,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:48:28,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 291 transitions, 3306 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:48:28,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:48:28,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:48:28,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:48:28,574 INFO L124 PetriNetUnfolderBase]: 846/1639 cut-off events. [2024-06-21 15:48:28,574 INFO L125 PetriNetUnfolderBase]: For 210693/210693 co-relation queries the response was YES. [2024-06-21 15:48:28,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11255 conditions, 1639 events. 846/1639 cut-off events. For 210693/210693 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 9842 event pairs, 335 based on Foata normal form. 8/1646 useless extension candidates. Maximal degree in co-relation 11074. Up to 1426 conditions per place. [2024-06-21 15:48:28,593 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 282 selfloop transitions, 19 changer transitions 10/313 dead transitions. [2024-06-21 15:48:28,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 313 transitions, 4284 flow [2024-06-21 15:48:28,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:48:28,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:48:28,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-21 15:48:28,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-21 15:48:28,594 INFO L175 Difference]: Start difference. First operand has 400 places, 291 transitions, 3306 flow. Second operand 10 states and 108 transitions. [2024-06-21 15:48:28,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 313 transitions, 4284 flow [2024-06-21 15:48:29,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 313 transitions, 4118 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-21 15:48:29,483 INFO L231 Difference]: Finished difference. Result has 402 places, 288 transitions, 3158 flow [2024-06-21 15:48:29,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3140, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3158, PETRI_PLACES=402, PETRI_TRANSITIONS=288} [2024-06-21 15:48:29,483 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 372 predicate places. [2024-06-21 15:48:29,483 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 288 transitions, 3158 flow [2024-06-21 15:48:29,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:48:29,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:48:29,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:48:29,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-21 15:48:29,484 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:48:29,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:48:29,484 INFO L85 PathProgramCache]: Analyzing trace with hash 704308318, now seen corresponding path program 14 times [2024-06-21 15:48:29,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:48:29,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242574659] [2024-06-21 15:48:29,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:48:29,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:48:29,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:48:30,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:48:30,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:48:30,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242574659] [2024-06-21 15:48:30,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242574659] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:48:30,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:48:30,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:48:30,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359058617] [2024-06-21 15:48:30,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:48:30,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:48:30,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:48:30,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:48:30,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:48:30,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:48:30,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 288 transitions, 3158 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:48:30,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:48:30,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:48:30,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:48:31,453 INFO L124 PetriNetUnfolderBase]: 837/1624 cut-off events. [2024-06-21 15:48:31,453 INFO L125 PetriNetUnfolderBase]: For 222660/222660 co-relation queries the response was YES. [2024-06-21 15:48:31,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10815 conditions, 1624 events. 837/1624 cut-off events. For 222660/222660 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 9711 event pairs, 348 based on Foata normal form. 12/1635 useless extension candidates. Maximal degree in co-relation 10633. Up to 1513 conditions per place. [2024-06-21 15:48:31,473 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 272 selfloop transitions, 24 changer transitions 6/304 dead transitions. [2024-06-21 15:48:31,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 304 transitions, 3886 flow [2024-06-21 15:48:31,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:48:31,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:48:31,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-21 15:48:31,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-21 15:48:31,474 INFO L175 Difference]: Start difference. First operand has 402 places, 288 transitions, 3158 flow. Second operand 10 states and 106 transitions. [2024-06-21 15:48:31,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 304 transitions, 3886 flow [2024-06-21 15:48:32,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 304 transitions, 3851 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-21 15:48:32,484 INFO L231 Difference]: Finished difference. Result has 399 places, 287 transitions, 3207 flow [2024-06-21 15:48:32,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3123, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3207, PETRI_PLACES=399, PETRI_TRANSITIONS=287} [2024-06-21 15:48:32,484 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 369 predicate places. [2024-06-21 15:48:32,484 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 287 transitions, 3207 flow [2024-06-21 15:48:32,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:48:32,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:48:32,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:48:32,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-21 15:48:32,485 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:48:32,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:48:32,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1244269234, now seen corresponding path program 36 times [2024-06-21 15:48:32,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:48:32,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816581382] [2024-06-21 15:48:32,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:48:32,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:48:32,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:48:33,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:48:33,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:48:33,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816581382] [2024-06-21 15:48:33,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816581382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:48:33,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:48:33,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:48:33,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043942921] [2024-06-21 15:48:33,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:48:33,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:48:33,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:48:33,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:48:33,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:48:33,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:48:33,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 287 transitions, 3207 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:48:33,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:48:33,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:48:33,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:48:34,160 INFO L124 PetriNetUnfolderBase]: 829/1612 cut-off events. [2024-06-21 15:48:34,160 INFO L125 PetriNetUnfolderBase]: For 169987/169987 co-relation queries the response was YES. [2024-06-21 15:48:34,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10789 conditions, 1612 events. 829/1612 cut-off events. For 169987/169987 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 9657 event pairs, 226 based on Foata normal form. 2/1610 useless extension candidates. Maximal degree in co-relation 10609. Up to 1135 conditions per place. [2024-06-21 15:48:34,179 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 200 selfloop transitions, 101 changer transitions 0/303 dead transitions. [2024-06-21 15:48:34,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 303 transitions, 3931 flow [2024-06-21 15:48:34,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:48:34,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:48:34,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-21 15:48:34,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-21 15:48:34,180 INFO L175 Difference]: Start difference. First operand has 399 places, 287 transitions, 3207 flow. Second operand 10 states and 112 transitions. [2024-06-21 15:48:34,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 303 transitions, 3931 flow [2024-06-21 15:48:35,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 303 transitions, 3841 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-21 15:48:35,097 INFO L231 Difference]: Finished difference. Result has 401 places, 288 transitions, 3375 flow [2024-06-21 15:48:35,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3117, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3375, PETRI_PLACES=401, PETRI_TRANSITIONS=288} [2024-06-21 15:48:35,097 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 371 predicate places. [2024-06-21 15:48:35,097 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 288 transitions, 3375 flow [2024-06-21 15:48:35,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:48:35,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:48:35,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:48:35,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-21 15:48:35,098 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:48:35,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:48:35,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1236635298, now seen corresponding path program 15 times [2024-06-21 15:48:35,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:48:35,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336490329] [2024-06-21 15:48:35,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:48:35,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:48:35,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:48:36,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:48:36,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:48:36,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336490329] [2024-06-21 15:48:36,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336490329] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:48:36,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:48:36,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:48:36,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526332144] [2024-06-21 15:48:36,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:48:36,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:48:36,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:48:36,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:48:36,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:48:36,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:48:36,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 288 transitions, 3375 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:48:36,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:48:36,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:48:36,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:48:36,839 INFO L124 PetriNetUnfolderBase]: 877/1712 cut-off events. [2024-06-21 15:48:36,839 INFO L125 PetriNetUnfolderBase]: For 255676/255676 co-relation queries the response was YES. [2024-06-21 15:48:36,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12593 conditions, 1712 events. 877/1712 cut-off events. For 255676/255676 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 10409 event pairs, 234 based on Foata normal form. 8/1716 useless extension candidates. Maximal degree in co-relation 12412. Up to 1339 conditions per place. [2024-06-21 15:48:36,860 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 239 selfloop transitions, 64 changer transitions 9/314 dead transitions. [2024-06-21 15:48:36,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 314 transitions, 4407 flow [2024-06-21 15:48:36,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:48:36,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:48:36,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-21 15:48:36,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-21 15:48:36,861 INFO L175 Difference]: Start difference. First operand has 401 places, 288 transitions, 3375 flow. Second operand 11 states and 124 transitions. [2024-06-21 15:48:36,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 314 transitions, 4407 flow [2024-06-21 15:48:38,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 314 transitions, 4159 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-21 15:48:38,023 INFO L231 Difference]: Finished difference. Result has 404 places, 284 transitions, 3231 flow [2024-06-21 15:48:38,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3127, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3231, PETRI_PLACES=404, PETRI_TRANSITIONS=284} [2024-06-21 15:48:38,023 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 374 predicate places. [2024-06-21 15:48:38,023 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 284 transitions, 3231 flow [2024-06-21 15:48:38,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:48:38,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:48:38,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:48:38,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-21 15:48:38,023 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:48:38,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:48:38,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1244053908, now seen corresponding path program 16 times [2024-06-21 15:48:38,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:48:38,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911382889] [2024-06-21 15:48:38,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:48:38,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:48:38,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:48:39,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:48:39,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:48:39,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911382889] [2024-06-21 15:48:39,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911382889] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:48:39,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:48:39,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:48:39,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156800241] [2024-06-21 15:48:39,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:48:39,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:48:39,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:48:39,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:48:39,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:48:39,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:48:39,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 284 transitions, 3231 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:48:39,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:48:39,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:48:39,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:48:40,468 INFO L124 PetriNetUnfolderBase]: 873/1704 cut-off events. [2024-06-21 15:48:40,468 INFO L125 PetriNetUnfolderBase]: For 268866/268866 co-relation queries the response was YES. [2024-06-21 15:48:40,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12444 conditions, 1704 events. 873/1704 cut-off events. For 268866/268866 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 10365 event pairs, 238 based on Foata normal form. 10/1710 useless extension candidates. Maximal degree in co-relation 12262. Up to 1435 conditions per place. [2024-06-21 15:48:40,489 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 231 selfloop transitions, 56 changer transitions 16/305 dead transitions. [2024-06-21 15:48:40,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 305 transitions, 3975 flow [2024-06-21 15:48:40,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:48:40,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:48:40,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-21 15:48:40,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-21 15:48:40,489 INFO L175 Difference]: Start difference. First operand has 404 places, 284 transitions, 3231 flow. Second operand 11 states and 121 transitions. [2024-06-21 15:48:40,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 305 transitions, 3975 flow [2024-06-21 15:48:41,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 305 transitions, 3773 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-21 15:48:41,654 INFO L231 Difference]: Finished difference. Result has 399 places, 278 transitions, 3100 flow [2024-06-21 15:48:41,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3029, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3100, PETRI_PLACES=399, PETRI_TRANSITIONS=278} [2024-06-21 15:48:41,655 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 369 predicate places. [2024-06-21 15:48:41,655 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 278 transitions, 3100 flow [2024-06-21 15:48:41,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:48:41,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:48:41,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:48:41,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-21 15:48:41,655 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:48:41,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:48:41,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1443565444, now seen corresponding path program 37 times [2024-06-21 15:48:41,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:48:41,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905318158] [2024-06-21 15:48:41,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:48:41,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:48:41,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:48:42,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:48:42,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:48:42,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905318158] [2024-06-21 15:48:42,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905318158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:48:42,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:48:42,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:48:42,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476252277] [2024-06-21 15:48:42,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:48:42,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:48:42,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:48:42,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:48:42,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:48:43,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:48:43,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 278 transitions, 3100 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:48:43,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:48:43,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:48:43,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:48:43,680 INFO L124 PetriNetUnfolderBase]: 834/1631 cut-off events. [2024-06-21 15:48:43,681 INFO L125 PetriNetUnfolderBase]: For 209198/209198 co-relation queries the response was YES. [2024-06-21 15:48:43,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11719 conditions, 1631 events. 834/1631 cut-off events. For 209198/209198 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 9815 event pairs, 231 based on Foata normal form. 2/1629 useless extension candidates. Maximal degree in co-relation 11540. Up to 1425 conditions per place. [2024-06-21 15:48:43,699 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 233 selfloop transitions, 58 changer transitions 0/293 dead transitions. [2024-06-21 15:48:43,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 293 transitions, 3802 flow [2024-06-21 15:48:43,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:48:43,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:48:43,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-21 15:48:43,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-21 15:48:43,700 INFO L175 Difference]: Start difference. First operand has 399 places, 278 transitions, 3100 flow. Second operand 10 states and 105 transitions. [2024-06-21 15:48:43,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 293 transitions, 3802 flow [2024-06-21 15:48:44,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 293 transitions, 3677 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-21 15:48:44,836 INFO L231 Difference]: Finished difference. Result has 392 places, 279 transitions, 3147 flow [2024-06-21 15:48:44,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2977, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3147, PETRI_PLACES=392, PETRI_TRANSITIONS=279} [2024-06-21 15:48:44,836 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 362 predicate places. [2024-06-21 15:48:44,837 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 279 transitions, 3147 flow [2024-06-21 15:48:44,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:48:44,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:48:44,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:48:44,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-21 15:48:44,837 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:48:44,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:48:44,837 INFO L85 PathProgramCache]: Analyzing trace with hash 386521210, now seen corresponding path program 17 times [2024-06-21 15:48:44,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:48:44,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939287111] [2024-06-21 15:48:44,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:48:44,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:48:44,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:48:45,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:48:45,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:48:45,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939287111] [2024-06-21 15:48:45,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939287111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:48:45,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:48:45,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:48:45,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145412254] [2024-06-21 15:48:45,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:48:45,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:48:45,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:48:45,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:48:45,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:48:45,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:48:45,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 279 transitions, 3147 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:48:45,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:48:45,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:48:45,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:48:46,465 INFO L124 PetriNetUnfolderBase]: 843/1654 cut-off events. [2024-06-21 15:48:46,465 INFO L125 PetriNetUnfolderBase]: For 225234/225234 co-relation queries the response was YES. [2024-06-21 15:48:46,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11545 conditions, 1654 events. 843/1654 cut-off events. For 225234/225234 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 10001 event pairs, 364 based on Foata normal form. 10/1663 useless extension candidates. Maximal degree in co-relation 11368. Up to 1511 conditions per place. [2024-06-21 15:48:46,484 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 259 selfloop transitions, 15 changer transitions 20/296 dead transitions. [2024-06-21 15:48:46,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 296 transitions, 3815 flow [2024-06-21 15:48:46,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 15:48:46,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 15:48:46,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 118 transitions. [2024-06-21 15:48:46,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3172043010752688 [2024-06-21 15:48:46,485 INFO L175 Difference]: Start difference. First operand has 392 places, 279 transitions, 3147 flow. Second operand 12 states and 118 transitions. [2024-06-21 15:48:46,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 296 transitions, 3815 flow [2024-06-21 15:48:47,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 296 transitions, 3655 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-21 15:48:47,634 INFO L231 Difference]: Finished difference. Result has 396 places, 268 transitions, 2922 flow [2024-06-21 15:48:47,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2987, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2922, PETRI_PLACES=396, PETRI_TRANSITIONS=268} [2024-06-21 15:48:47,634 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 366 predicate places. [2024-06-21 15:48:47,634 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 268 transitions, 2922 flow [2024-06-21 15:48:47,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:48:47,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:48:47,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:48:47,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-21 15:48:47,635 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:48:47,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:48:47,635 INFO L85 PathProgramCache]: Analyzing trace with hash 386530510, now seen corresponding path program 18 times [2024-06-21 15:48:47,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:48:47,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333025775] [2024-06-21 15:48:47,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:48:47,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:48:47,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:48:48,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:48:48,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:48:48,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333025775] [2024-06-21 15:48:48,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333025775] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:48:48,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:48:48,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:48:48,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573664181] [2024-06-21 15:48:48,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:48:48,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:48:48,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:48:48,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:48:48,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:48:48,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:48:48,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 268 transitions, 2922 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:48:48,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:48:48,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:48:48,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:48:49,198 INFO L124 PetriNetUnfolderBase]: 779/1530 cut-off events. [2024-06-21 15:48:49,198 INFO L125 PetriNetUnfolderBase]: For 185783/185783 co-relation queries the response was YES. [2024-06-21 15:48:49,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10129 conditions, 1530 events. 779/1530 cut-off events. For 185783/185783 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 9120 event pairs, 340 based on Foata normal form. 8/1537 useless extension candidates. Maximal degree in co-relation 9951. Up to 1453 conditions per place. [2024-06-21 15:48:49,216 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 254 selfloop transitions, 9 changer transitions 18/283 dead transitions. [2024-06-21 15:48:49,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 283 transitions, 3544 flow [2024-06-21 15:48:49,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:48:49,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:48:49,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 104 transitions. [2024-06-21 15:48:49,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30498533724340177 [2024-06-21 15:48:49,217 INFO L175 Difference]: Start difference. First operand has 396 places, 268 transitions, 2922 flow. Second operand 11 states and 104 transitions. [2024-06-21 15:48:49,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 283 transitions, 3544 flow [2024-06-21 15:48:50,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 283 transitions, 3493 flow, removed 8 selfloop flow, removed 15 redundant places. [2024-06-21 15:48:50,039 INFO L231 Difference]: Finished difference. Result has 384 places, 260 transitions, 2835 flow [2024-06-21 15:48:50,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2873, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2835, PETRI_PLACES=384, PETRI_TRANSITIONS=260} [2024-06-21 15:48:50,040 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 354 predicate places. [2024-06-21 15:48:50,040 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 260 transitions, 2835 flow [2024-06-21 15:48:50,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:48:50,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:48:50,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:48:50,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-21 15:48:50,040 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:48:50,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:48:50,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1443571024, now seen corresponding path program 38 times [2024-06-21 15:48:50,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:48:50,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125130348] [2024-06-21 15:48:50,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:48:50,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:48:50,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:48:51,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:48:51,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:48:51,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125130348] [2024-06-21 15:48:51,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125130348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:48:51,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:48:51,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:48:51,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093665306] [2024-06-21 15:48:51,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:48:51,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:48:51,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:48:51,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:48:51,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:48:51,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:48:51,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 260 transitions, 2835 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:48:51,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:48:51,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:48:51,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:48:51,709 INFO L124 PetriNetUnfolderBase]: 758/1483 cut-off events. [2024-06-21 15:48:51,709 INFO L125 PetriNetUnfolderBase]: For 148169/148169 co-relation queries the response was YES. [2024-06-21 15:48:51,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9804 conditions, 1483 events. 758/1483 cut-off events. For 148169/148169 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 8754 event pairs, 210 based on Foata normal form. 2/1481 useless extension candidates. Maximal degree in co-relation 9631. Up to 1277 conditions per place. [2024-06-21 15:48:51,723 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 216 selfloop transitions, 57 changer transitions 0/275 dead transitions. [2024-06-21 15:48:51,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 275 transitions, 3483 flow [2024-06-21 15:48:51,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:48:51,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:48:51,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-21 15:48:51,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33548387096774196 [2024-06-21 15:48:51,723 INFO L175 Difference]: Start difference. First operand has 384 places, 260 transitions, 2835 flow. Second operand 10 states and 104 transitions. [2024-06-21 15:48:51,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 275 transitions, 3483 flow [2024-06-21 15:48:52,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 275 transitions, 3451 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-21 15:48:52,436 INFO L231 Difference]: Finished difference. Result has 373 places, 261 transitions, 2971 flow [2024-06-21 15:48:52,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2805, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2971, PETRI_PLACES=373, PETRI_TRANSITIONS=261} [2024-06-21 15:48:52,436 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 343 predicate places. [2024-06-21 15:48:52,436 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 261 transitions, 2971 flow [2024-06-21 15:48:52,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:48:52,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:48:52,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:48:52,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-21 15:48:52,437 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:48:52,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:48:52,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1437993318, now seen corresponding path program 19 times [2024-06-21 15:48:52,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:48:52,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821363319] [2024-06-21 15:48:52,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:48:52,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:48:52,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:48:54,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:48:54,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:48:54,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821363319] [2024-06-21 15:48:54,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821363319] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:48:54,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:48:54,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:48:54,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915774838] [2024-06-21 15:48:54,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:48:54,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:48:54,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:48:54,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:48:54,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:48:54,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:48:54,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 261 transitions, 2971 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:48:54,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:48:54,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:48:54,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:48:54,979 INFO L124 PetriNetUnfolderBase]: 760/1493 cut-off events. [2024-06-21 15:48:54,979 INFO L125 PetriNetUnfolderBase]: For 150717/150717 co-relation queries the response was YES. [2024-06-21 15:48:54,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9455 conditions, 1493 events. 760/1493 cut-off events. For 150717/150717 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 8846 event pairs, 216 based on Foata normal form. 10/1499 useless extension candidates. Maximal degree in co-relation 9286. Up to 1045 conditions per place. [2024-06-21 15:48:54,996 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 189 selfloop transitions, 81 changer transitions 7/279 dead transitions. [2024-06-21 15:48:54,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 279 transitions, 3627 flow [2024-06-21 15:48:54,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:48:54,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:48:54,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-21 15:48:54,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36774193548387096 [2024-06-21 15:48:54,997 INFO L175 Difference]: Start difference. First operand has 373 places, 261 transitions, 2971 flow. Second operand 10 states and 114 transitions. [2024-06-21 15:48:54,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 279 transitions, 3627 flow [2024-06-21 15:48:55,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 279 transitions, 3471 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-21 15:48:55,725 INFO L231 Difference]: Finished difference. Result has 375 places, 258 transitions, 2959 flow [2024-06-21 15:48:55,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2815, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2959, PETRI_PLACES=375, PETRI_TRANSITIONS=258} [2024-06-21 15:48:55,725 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 345 predicate places. [2024-06-21 15:48:55,725 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 258 transitions, 2959 flow [2024-06-21 15:48:55,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:48:55,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:48:55,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:48:55,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-21 15:48:55,726 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:48:55,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:48:55,727 INFO L85 PathProgramCache]: Analyzing trace with hash 439792394, now seen corresponding path program 39 times [2024-06-21 15:48:55,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:48:55,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927712631] [2024-06-21 15:48:55,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:48:55,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:48:55,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:48:56,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:48:56,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:48:56,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927712631] [2024-06-21 15:48:56,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927712631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:48:56,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:48:56,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:48:56,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101705829] [2024-06-21 15:48:56,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:48:56,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:48:56,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:48:56,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:48:56,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:48:57,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:48:57,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 258 transitions, 2959 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:48:57,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:48:57,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:48:57,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:48:57,584 INFO L124 PetriNetUnfolderBase]: 738/1451 cut-off events. [2024-06-21 15:48:57,584 INFO L125 PetriNetUnfolderBase]: For 125192/125192 co-relation queries the response was YES. [2024-06-21 15:48:57,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9354 conditions, 1451 events. 738/1451 cut-off events. For 125192/125192 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 8574 event pairs, 208 based on Foata normal form. 2/1449 useless extension candidates. Maximal degree in co-relation 9184. Up to 1053 conditions per place. [2024-06-21 15:48:57,606 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 176 selfloop transitions, 95 changer transitions 0/273 dead transitions. [2024-06-21 15:48:57,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 273 transitions, 3611 flow [2024-06-21 15:48:57,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:48:57,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:48:57,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-21 15:48:57,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-21 15:48:57,607 INFO L175 Difference]: Start difference. First operand has 375 places, 258 transitions, 2959 flow. Second operand 10 states and 108 transitions. [2024-06-21 15:48:57,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 273 transitions, 3611 flow [2024-06-21 15:48:58,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 273 transitions, 3443 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-21 15:48:58,431 INFO L231 Difference]: Finished difference. Result has 373 places, 259 transitions, 3035 flow [2024-06-21 15:48:58,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2791, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3035, PETRI_PLACES=373, PETRI_TRANSITIONS=259} [2024-06-21 15:48:58,431 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 343 predicate places. [2024-06-21 15:48:58,431 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 259 transitions, 3035 flow [2024-06-21 15:48:58,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:48:58,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:48:58,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:48:58,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-21 15:48:58,432 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:48:58,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:48:58,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1443715174, now seen corresponding path program 40 times [2024-06-21 15:48:58,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:48:58,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142604508] [2024-06-21 15:48:58,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:48:58,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:48:58,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:48:59,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:48:59,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:48:59,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142604508] [2024-06-21 15:48:59,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142604508] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:48:59,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:48:59,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:48:59,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919076209] [2024-06-21 15:48:59,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:48:59,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:48:59,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:48:59,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:48:59,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:48:59,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:48:59,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 259 transitions, 3035 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:48:59,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:48:59,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:48:59,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:48:59,951 INFO L124 PetriNetUnfolderBase]: 742/1459 cut-off events. [2024-06-21 15:48:59,951 INFO L125 PetriNetUnfolderBase]: For 123895/123895 co-relation queries the response was YES. [2024-06-21 15:48:59,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9479 conditions, 1459 events. 742/1459 cut-off events. For 123895/123895 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 8632 event pairs, 208 based on Foata normal form. 2/1457 useless extension candidates. Maximal degree in co-relation 9310. Up to 1253 conditions per place. [2024-06-21 15:48:59,969 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 216 selfloop transitions, 56 changer transitions 0/274 dead transitions. [2024-06-21 15:48:59,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 274 transitions, 3675 flow [2024-06-21 15:48:59,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:48:59,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:48:59,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-21 15:48:59,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33225806451612905 [2024-06-21 15:48:59,970 INFO L175 Difference]: Start difference. First operand has 373 places, 259 transitions, 3035 flow. Second operand 10 states and 103 transitions. [2024-06-21 15:48:59,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 274 transitions, 3675 flow [2024-06-21 15:49:00,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 274 transitions, 3436 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-21 15:49:00,733 INFO L231 Difference]: Finished difference. Result has 375 places, 260 transitions, 2964 flow [2024-06-21 15:49:00,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2796, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2964, PETRI_PLACES=375, PETRI_TRANSITIONS=260} [2024-06-21 15:49:00,733 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 345 predicate places. [2024-06-21 15:49:00,733 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 260 transitions, 2964 flow [2024-06-21 15:49:00,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:49:00,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:49:00,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:49:00,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-21 15:49:00,734 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:49:00,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:49:00,734 INFO L85 PathProgramCache]: Analyzing trace with hash 446942234, now seen corresponding path program 41 times [2024-06-21 15:49:00,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:49:00,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250855479] [2024-06-21 15:49:00,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:49:00,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:49:00,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:49:01,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:49:01,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:49:01,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250855479] [2024-06-21 15:49:01,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250855479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:49:01,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:49:01,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:49:01,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560372997] [2024-06-21 15:49:01,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:49:01,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:49:01,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:49:01,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:49:01,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:49:01,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:49:01,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 260 transitions, 2964 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:49:01,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:49:01,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:49:01,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:49:02,313 INFO L124 PetriNetUnfolderBase]: 746/1467 cut-off events. [2024-06-21 15:49:02,313 INFO L125 PetriNetUnfolderBase]: For 126742/126742 co-relation queries the response was YES. [2024-06-21 15:49:02,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9456 conditions, 1467 events. 746/1467 cut-off events. For 126742/126742 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 8689 event pairs, 330 based on Foata normal form. 2/1468 useless extension candidates. Maximal degree in co-relation 9286. Up to 1388 conditions per place. [2024-06-21 15:49:02,329 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 247 selfloop transitions, 26 changer transitions 0/275 dead transitions. [2024-06-21 15:49:02,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 275 transitions, 3624 flow [2024-06-21 15:49:02,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:49:02,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:49:02,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-21 15:49:02,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33225806451612905 [2024-06-21 15:49:02,330 INFO L175 Difference]: Start difference. First operand has 375 places, 260 transitions, 2964 flow. Second operand 10 states and 103 transitions. [2024-06-21 15:49:02,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 275 transitions, 3624 flow [2024-06-21 15:49:03,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 275 transitions, 3464 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-21 15:49:03,090 INFO L231 Difference]: Finished difference. Result has 377 places, 261 transitions, 2914 flow [2024-06-21 15:49:03,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2804, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2914, PETRI_PLACES=377, PETRI_TRANSITIONS=261} [2024-06-21 15:49:03,090 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 347 predicate places. [2024-06-21 15:49:03,090 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 261 transitions, 2914 flow [2024-06-21 15:49:03,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:49:03,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:49:03,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:49:03,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-21 15:49:03,090 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:49:03,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:49:03,091 INFO L85 PathProgramCache]: Analyzing trace with hash 439800330, now seen corresponding path program 20 times [2024-06-21 15:49:03,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:49:03,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588211815] [2024-06-21 15:49:03,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:49:03,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:49:03,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:49:03,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:49:03,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:49:03,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588211815] [2024-06-21 15:49:03,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588211815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:49:03,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:49:03,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:49:03,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146776903] [2024-06-21 15:49:03,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:49:03,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:49:03,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:49:03,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:49:03,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:49:03,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:49:03,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 261 transitions, 2914 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:49:03,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:49:03,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:49:03,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:49:04,388 INFO L124 PetriNetUnfolderBase]: 762/1503 cut-off events. [2024-06-21 15:49:04,388 INFO L125 PetriNetUnfolderBase]: For 157486/157486 co-relation queries the response was YES. [2024-06-21 15:49:04,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9462 conditions, 1503 events. 762/1503 cut-off events. For 157486/157486 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 8958 event pairs, 216 based on Foata normal form. 10/1509 useless extension candidates. Maximal degree in co-relation 9291. Up to 1059 conditions per place. [2024-06-21 15:49:04,405 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 174 selfloop transitions, 89 changer transitions 14/279 dead transitions. [2024-06-21 15:49:04,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 279 transitions, 3570 flow [2024-06-21 15:49:04,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:49:04,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:49:04,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-21 15:49:04,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36451612903225805 [2024-06-21 15:49:04,406 INFO L175 Difference]: Start difference. First operand has 377 places, 261 transitions, 2914 flow. Second operand 10 states and 113 transitions. [2024-06-21 15:49:04,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 279 transitions, 3570 flow [2024-06-21 15:49:05,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 279 transitions, 3470 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-21 15:49:05,086 INFO L231 Difference]: Finished difference. Result has 379 places, 255 transitions, 2954 flow [2024-06-21 15:49:05,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2814, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2954, PETRI_PLACES=379, PETRI_TRANSITIONS=255} [2024-06-21 15:49:05,087 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 349 predicate places. [2024-06-21 15:49:05,087 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 255 transitions, 2954 flow [2024-06-21 15:49:05,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:49:05,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:49:05,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:49:05,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-21 15:49:05,087 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:49:05,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:49:05,087 INFO L85 PathProgramCache]: Analyzing trace with hash 439585004, now seen corresponding path program 42 times [2024-06-21 15:49:05,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:49:05,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686187479] [2024-06-21 15:49:05,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:49:05,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:49:05,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:49:06,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:49:06,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:49:06,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686187479] [2024-06-21 15:49:06,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686187479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:49:06,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:49:06,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:49:06,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914928854] [2024-06-21 15:49:06,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:49:06,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:49:06,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:49:06,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:49:06,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:49:06,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:49:06,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 255 transitions, 2954 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:49:06,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:49:06,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:49:06,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:49:07,009 INFO L124 PetriNetUnfolderBase]: 723/1430 cut-off events. [2024-06-21 15:49:07,009 INFO L125 PetriNetUnfolderBase]: For 122286/122286 co-relation queries the response was YES. [2024-06-21 15:49:07,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9030 conditions, 1430 events. 723/1430 cut-off events. For 122286/122286 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 8475 event pairs, 207 based on Foata normal form. 2/1428 useless extension candidates. Maximal degree in co-relation 8858. Up to 1040 conditions per place. [2024-06-21 15:49:07,026 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 176 selfloop transitions, 91 changer transitions 0/269 dead transitions. [2024-06-21 15:49:07,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 269 transitions, 3542 flow [2024-06-21 15:49:07,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:49:07,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:49:07,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-21 15:49:07,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-21 15:49:07,027 INFO L175 Difference]: Start difference. First operand has 379 places, 255 transitions, 2954 flow. Second operand 10 states and 106 transitions. [2024-06-21 15:49:07,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 269 transitions, 3542 flow [2024-06-21 15:49:07,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 269 transitions, 3353 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-21 15:49:07,850 INFO L231 Difference]: Finished difference. Result has 373 places, 255 transitions, 2951 flow [2024-06-21 15:49:07,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2765, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2951, PETRI_PLACES=373, PETRI_TRANSITIONS=255} [2024-06-21 15:49:07,850 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 343 predicate places. [2024-06-21 15:49:07,850 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 255 transitions, 2951 flow [2024-06-21 15:49:07,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:49:07,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:49:07,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:49:07,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-21 15:49:07,851 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:49:07,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:49:07,851 INFO L85 PathProgramCache]: Analyzing trace with hash 446950170, now seen corresponding path program 21 times [2024-06-21 15:49:07,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:49:07,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5549244] [2024-06-21 15:49:07,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:49:07,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:49:07,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:49:08,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:49:08,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:49:08,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5549244] [2024-06-21 15:49:08,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5549244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:49:08,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:49:08,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:49:08,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842739568] [2024-06-21 15:49:08,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:49:08,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:49:08,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:49:08,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:49:08,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:49:08,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:49:08,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 255 transitions, 2951 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:49:08,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:49:08,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:49:08,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:49:09,613 INFO L124 PetriNetUnfolderBase]: 739/1466 cut-off events. [2024-06-21 15:49:09,614 INFO L125 PetriNetUnfolderBase]: For 145972/145972 co-relation queries the response was YES. [2024-06-21 15:49:09,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9114 conditions, 1466 events. 739/1466 cut-off events. For 145972/145972 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 8715 event pairs, 333 based on Foata normal form. 10/1475 useless extension candidates. Maximal degree in co-relation 8944. Up to 1357 conditions per place. [2024-06-21 15:49:09,630 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 241 selfloop transitions, 15 changer transitions 16/274 dead transitions. [2024-06-21 15:49:09,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 274 transitions, 3599 flow [2024-06-21 15:49:09,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:49:09,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:49:09,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-21 15:49:09,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3343108504398827 [2024-06-21 15:49:09,631 INFO L175 Difference]: Start difference. First operand has 373 places, 255 transitions, 2951 flow. Second operand 11 states and 114 transitions. [2024-06-21 15:49:09,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 274 transitions, 3599 flow [2024-06-21 15:49:10,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 274 transitions, 3207 flow, removed 25 selfloop flow, removed 11 redundant places. [2024-06-21 15:49:10,431 INFO L231 Difference]: Finished difference. Result has 373 places, 249 transitions, 2556 flow [2024-06-21 15:49:10,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2559, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2556, PETRI_PLACES=373, PETRI_TRANSITIONS=249} [2024-06-21 15:49:10,432 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 343 predicate places. [2024-06-21 15:49:10,432 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 249 transitions, 2556 flow [2024-06-21 15:49:10,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:49:10,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:49:10,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:49:10,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-21 15:49:10,432 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:49:10,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:49:10,433 INFO L85 PathProgramCache]: Analyzing trace with hash 447209640, now seen corresponding path program 22 times [2024-06-21 15:49:10,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:49:10,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700982069] [2024-06-21 15:49:10,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:49:10,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:49:10,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:49:11,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:49:11,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:49:11,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700982069] [2024-06-21 15:49:11,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700982069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:49:11,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:49:11,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:49:11,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540333190] [2024-06-21 15:49:11,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:49:11,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:49:11,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:49:11,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:49:11,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:49:11,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:49:11,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 249 transitions, 2556 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:49:11,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:49:11,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:49:11,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:49:11,732 INFO L124 PetriNetUnfolderBase]: 721/1436 cut-off events. [2024-06-21 15:49:11,732 INFO L125 PetriNetUnfolderBase]: For 147330/147330 co-relation queries the response was YES. [2024-06-21 15:49:11,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8416 conditions, 1436 events. 721/1436 cut-off events. For 147330/147330 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 8537 event pairs, 335 based on Foata normal form. 10/1445 useless extension candidates. Maximal degree in co-relation 8247. Up to 1351 conditions per place. [2024-06-21 15:49:11,748 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 240 selfloop transitions, 12 changer transitions 11/265 dead transitions. [2024-06-21 15:49:11,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 265 transitions, 3164 flow [2024-06-21 15:49:11,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:49:11,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:49:11,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-21 15:49:11,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3258064516129032 [2024-06-21 15:49:11,748 INFO L175 Difference]: Start difference. First operand has 373 places, 249 transitions, 2556 flow. Second operand 10 states and 101 transitions. [2024-06-21 15:49:11,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 265 transitions, 3164 flow [2024-06-21 15:49:12,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 265 transitions, 3061 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-21 15:49:12,425 INFO L231 Difference]: Finished difference. Result has 365 places, 246 transitions, 2467 flow [2024-06-21 15:49:12,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2457, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2467, PETRI_PLACES=365, PETRI_TRANSITIONS=246} [2024-06-21 15:49:12,425 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 335 predicate places. [2024-06-21 15:49:12,425 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 246 transitions, 2467 flow [2024-06-21 15:49:12,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:49:12,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:49:12,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:49:12,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-21 15:49:12,426 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:49:12,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:49:12,426 INFO L85 PathProgramCache]: Analyzing trace with hash 447218940, now seen corresponding path program 23 times [2024-06-21 15:49:12,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:49:12,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291940345] [2024-06-21 15:49:12,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:49:12,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:49:12,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:49:13,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:49:13,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:49:13,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291940345] [2024-06-21 15:49:13,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291940345] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:49:13,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:49:13,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:49:13,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702350533] [2024-06-21 15:49:13,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:49:13,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:49:13,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:49:13,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:49:13,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:49:13,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:49:13,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 246 transitions, 2467 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:49:13,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:49:13,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:49:13,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:49:13,640 INFO L124 PetriNetUnfolderBase]: 702/1403 cut-off events. [2024-06-21 15:49:13,640 INFO L125 PetriNetUnfolderBase]: For 126127/126127 co-relation queries the response was YES. [2024-06-21 15:49:13,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7954 conditions, 1403 events. 702/1403 cut-off events. For 126127/126127 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 8330 event pairs, 328 based on Foata normal form. 8/1410 useless extension candidates. Maximal degree in co-relation 7788. Up to 1328 conditions per place. [2024-06-21 15:49:13,655 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 237 selfloop transitions, 10 changer transitions 12/261 dead transitions. [2024-06-21 15:49:13,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 261 transitions, 3049 flow [2024-06-21 15:49:13,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:49:13,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:49:13,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 98 transitions. [2024-06-21 15:49:13,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3161290322580645 [2024-06-21 15:49:13,656 INFO L175 Difference]: Start difference. First operand has 365 places, 246 transitions, 2467 flow. Second operand 10 states and 98 transitions. [2024-06-21 15:49:13,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 261 transitions, 3049 flow [2024-06-21 15:49:14,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 261 transitions, 3021 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-21 15:49:14,297 INFO L231 Difference]: Finished difference. Result has 363 places, 242 transitions, 2443 flow [2024-06-21 15:49:14,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2439, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2443, PETRI_PLACES=363, PETRI_TRANSITIONS=242} [2024-06-21 15:49:14,297 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 333 predicate places. [2024-06-21 15:49:14,297 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 242 transitions, 2443 flow [2024-06-21 15:49:14,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:49:14,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:49:14,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:49:14,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-21 15:49:14,298 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:49:14,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:49:14,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1445944291, now seen corresponding path program 1 times [2024-06-21 15:49:14,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:49:14,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897337561] [2024-06-21 15:49:14,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:49:14,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:49:14,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:49:15,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:49:15,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:49:15,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897337561] [2024-06-21 15:49:15,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897337561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:49:15,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:49:15,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:49:15,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344796988] [2024-06-21 15:49:15,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:49:15,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:49:15,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:49:15,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:49:15,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:49:15,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:49:15,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 242 transitions, 2443 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:49:15,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:49:15,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:49:15,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:49:16,050 INFO L124 PetriNetUnfolderBase]: 690/1379 cut-off events. [2024-06-21 15:49:16,050 INFO L125 PetriNetUnfolderBase]: For 117099/117099 co-relation queries the response was YES. [2024-06-21 15:49:16,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7821 conditions, 1379 events. 690/1379 cut-off events. For 117099/117099 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 8164 event pairs, 194 based on Foata normal form. 6/1383 useless extension candidates. Maximal degree in co-relation 7656. Up to 1177 conditions per place. [2024-06-21 15:49:16,064 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 214 selfloop transitions, 29 changer transitions 20/265 dead transitions. [2024-06-21 15:49:16,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 265 transitions, 3027 flow [2024-06-21 15:49:16,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 15:49:16,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 15:49:16,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-21 15:49:16,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33602150537634407 [2024-06-21 15:49:16,065 INFO L175 Difference]: Start difference. First operand has 363 places, 242 transitions, 2443 flow. Second operand 12 states and 125 transitions. [2024-06-21 15:49:16,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 265 transitions, 3027 flow [2024-06-21 15:49:16,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 265 transitions, 3001 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-21 15:49:16,701 INFO L231 Difference]: Finished difference. Result has 360 places, 235 transitions, 2376 flow [2024-06-21 15:49:16,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2417, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2376, PETRI_PLACES=360, PETRI_TRANSITIONS=235} [2024-06-21 15:49:16,702 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 330 predicate places. [2024-06-21 15:49:16,702 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 235 transitions, 2376 flow [2024-06-21 15:49:16,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:49:16,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:49:16,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:49:16,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-21 15:49:16,702 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:49:16,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:49:16,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1821086729, now seen corresponding path program 2 times [2024-06-21 15:49:16,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:49:16,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080336589] [2024-06-21 15:49:16,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:49:16,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:49:16,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:49:18,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:49:18,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:49:18,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080336589] [2024-06-21 15:49:18,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080336589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:49:18,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:49:18,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:49:18,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865952017] [2024-06-21 15:49:18,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:49:18,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:49:18,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:49:18,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:49:18,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:49:18,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:49:18,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 235 transitions, 2376 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:49:18,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:49:18,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:49:18,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:49:18,996 INFO L124 PetriNetUnfolderBase]: 662/1329 cut-off events. [2024-06-21 15:49:18,996 INFO L125 PetriNetUnfolderBase]: For 111657/111657 co-relation queries the response was YES. [2024-06-21 15:49:19,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7561 conditions, 1329 events. 662/1329 cut-off events. For 111657/111657 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 7842 event pairs, 179 based on Foata normal form. 6/1334 useless extension candidates. Maximal degree in co-relation 7398. Up to 1125 conditions per place. [2024-06-21 15:49:19,009 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 210 selfloop transitions, 27 changer transitions 19/258 dead transitions. [2024-06-21 15:49:19,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 258 transitions, 2946 flow [2024-06-21 15:49:19,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 15:49:19,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 15:49:19,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-21 15:49:19,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33602150537634407 [2024-06-21 15:49:19,010 INFO L175 Difference]: Start difference. First operand has 360 places, 235 transitions, 2376 flow. Second operand 12 states and 125 transitions. [2024-06-21 15:49:19,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 258 transitions, 2946 flow [2024-06-21 15:49:19,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 258 transitions, 2864 flow, removed 5 selfloop flow, removed 14 redundant places. [2024-06-21 15:49:19,565 INFO L231 Difference]: Finished difference. Result has 349 places, 229 transitions, 2287 flow [2024-06-21 15:49:19,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2294, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2287, PETRI_PLACES=349, PETRI_TRANSITIONS=229} [2024-06-21 15:49:19,565 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 319 predicate places. [2024-06-21 15:49:19,565 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 229 transitions, 2287 flow [2024-06-21 15:49:19,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:49:19,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:49:19,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:49:19,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-21 15:49:19,566 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:49:19,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:49:19,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1438213893, now seen corresponding path program 3 times [2024-06-21 15:49:19,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:49:19,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626047279] [2024-06-21 15:49:19,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:49:19,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:49:19,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:49:20,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:49:20,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:49:20,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626047279] [2024-06-21 15:49:20,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626047279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:49:20,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:49:20,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:49:20,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494567724] [2024-06-21 15:49:20,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:49:20,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:49:20,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:49:20,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:49:20,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:49:20,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:49:20,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 229 transitions, 2287 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:49:20,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:49:20,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:49:20,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:49:21,306 INFO L124 PetriNetUnfolderBase]: 638/1283 cut-off events. [2024-06-21 15:49:21,306 INFO L125 PetriNetUnfolderBase]: For 111281/111281 co-relation queries the response was YES. [2024-06-21 15:49:21,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7332 conditions, 1283 events. 638/1283 cut-off events. For 111281/111281 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 7482 event pairs, 181 based on Foata normal form. 6/1287 useless extension candidates. Maximal degree in co-relation 7174. Up to 1119 conditions per place. [2024-06-21 15:49:21,319 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 200 selfloop transitions, 31 changer transitions 17/250 dead transitions. [2024-06-21 15:49:21,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 250 transitions, 2835 flow [2024-06-21 15:49:21,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 15:49:21,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 15:49:21,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-21 15:49:21,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33602150537634407 [2024-06-21 15:49:21,320 INFO L175 Difference]: Start difference. First operand has 349 places, 229 transitions, 2287 flow. Second operand 12 states and 125 transitions. [2024-06-21 15:49:21,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 250 transitions, 2835 flow [2024-06-21 15:49:21,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 250 transitions, 2754 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-06-21 15:49:21,849 INFO L231 Difference]: Finished difference. Result has 339 places, 224 transitions, 2206 flow [2024-06-21 15:49:21,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2206, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2206, PETRI_PLACES=339, PETRI_TRANSITIONS=224} [2024-06-21 15:49:21,850 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 309 predicate places. [2024-06-21 15:49:21,850 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 224 transitions, 2206 flow [2024-06-21 15:49:21,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:49:21,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:49:21,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:49:21,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-21 15:49:21,850 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:49:21,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:49:21,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1162194317, now seen corresponding path program 4 times [2024-06-21 15:49:21,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:49:21,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398015103] [2024-06-21 15:49:21,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:49:21,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:49:21,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:49:23,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:49:23,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:49:23,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398015103] [2024-06-21 15:49:23,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398015103] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:49:23,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:49:23,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:49:23,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441563558] [2024-06-21 15:49:23,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:49:23,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:49:23,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:49:23,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:49:23,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:49:23,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:49:23,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 224 transitions, 2206 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:49:23,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:49:23,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:49:23,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:49:24,000 INFO L124 PetriNetUnfolderBase]: 620/1249 cut-off events. [2024-06-21 15:49:24,000 INFO L125 PetriNetUnfolderBase]: For 110762/110762 co-relation queries the response was YES. [2024-06-21 15:49:24,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7144 conditions, 1249 events. 620/1249 cut-off events. For 110762/110762 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 7222 event pairs, 173 based on Foata normal form. 6/1254 useless extension candidates. Maximal degree in co-relation 6990. Up to 1075 conditions per place. [2024-06-21 15:49:24,012 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 192 selfloop transitions, 42 changer transitions 8/244 dead transitions. [2024-06-21 15:49:24,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 244 transitions, 2756 flow [2024-06-21 15:49:24,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 15:49:24,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 15:49:24,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-21 15:49:24,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3467741935483871 [2024-06-21 15:49:24,013 INFO L175 Difference]: Start difference. First operand has 339 places, 224 transitions, 2206 flow. Second operand 12 states and 129 transitions. [2024-06-21 15:49:24,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 244 transitions, 2756 flow [2024-06-21 15:49:24,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 244 transitions, 2682 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-21 15:49:24,583 INFO L231 Difference]: Finished difference. Result has 331 places, 222 transitions, 2201 flow [2024-06-21 15:49:24,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2132, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2201, PETRI_PLACES=331, PETRI_TRANSITIONS=222} [2024-06-21 15:49:24,584 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 301 predicate places. [2024-06-21 15:49:24,584 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 222 transitions, 2201 flow [2024-06-21 15:49:24,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:49:24,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:49:24,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:49:24,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-21 15:49:24,584 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:49:24,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:49:24,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1549036413, now seen corresponding path program 5 times [2024-06-21 15:49:24,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:49:24,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569054803] [2024-06-21 15:49:24,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:49:24,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:49:24,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:49:25,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:49:25,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:49:25,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569054803] [2024-06-21 15:49:25,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569054803] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:49:25,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:49:25,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:49:25,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040707674] [2024-06-21 15:49:25,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:49:25,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:49:25,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:49:25,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:49:25,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:49:26,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:49:26,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 222 transitions, 2201 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:49:26,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:49:26,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:49:26,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:49:26,587 INFO L124 PetriNetUnfolderBase]: 618/1247 cut-off events. [2024-06-21 15:49:26,587 INFO L125 PetriNetUnfolderBase]: For 110877/110877 co-relation queries the response was YES. [2024-06-21 15:49:26,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7126 conditions, 1247 events. 618/1247 cut-off events. For 110877/110877 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 7222 event pairs, 177 based on Foata normal form. 6/1251 useless extension candidates. Maximal degree in co-relation 6977. Up to 1077 conditions per place. [2024-06-21 15:49:26,599 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 193 selfloop transitions, 34 changer transitions 15/244 dead transitions. [2024-06-21 15:49:26,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 244 transitions, 2750 flow [2024-06-21 15:49:26,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 15:49:26,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 15:49:26,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-21 15:49:26,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-21 15:49:26,600 INFO L175 Difference]: Start difference. First operand has 331 places, 222 transitions, 2201 flow. Second operand 12 states and 126 transitions. [2024-06-21 15:49:26,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 244 transitions, 2750 flow [2024-06-21 15:49:27,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 244 transitions, 2662 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-21 15:49:27,160 INFO L231 Difference]: Finished difference. Result has 330 places, 218 transitions, 2130 flow [2024-06-21 15:49:27,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2113, PETRI_DIFFERENCE_MINUEND_PLACES=317, 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=12, PETRI_FLOW=2130, PETRI_PLACES=330, PETRI_TRANSITIONS=218} [2024-06-21 15:49:27,160 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 300 predicate places. [2024-06-21 15:49:27,160 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 218 transitions, 2130 flow [2024-06-21 15:49:27,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:49:27,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:49:27,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:49:27,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-21 15:49:27,161 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:49:27,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:49:27,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1157552687, now seen corresponding path program 6 times [2024-06-21 15:49:27,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:49:27,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754566790] [2024-06-21 15:49:27,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:49:27,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:49:27,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:49:28,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:49:28,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:49:28,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754566790] [2024-06-21 15:49:28,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754566790] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:49:28,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:49:28,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:49:28,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447710271] [2024-06-21 15:49:28,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:49:28,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:49:28,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:49:28,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:49:28,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:49:28,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:49:28,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 218 transitions, 2130 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:49:28,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:49:28,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:49:28,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:49:29,057 INFO L124 PetriNetUnfolderBase]: 602/1219 cut-off events. [2024-06-21 15:49:29,057 INFO L125 PetriNetUnfolderBase]: For 109719/109719 co-relation queries the response was YES. [2024-06-21 15:49:29,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6982 conditions, 1219 events. 602/1219 cut-off events. For 109719/109719 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 7033 event pairs, 165 based on Foata normal form. 6/1224 useless extension candidates. Maximal degree in co-relation 6832. Up to 1048 conditions per place. [2024-06-21 15:49:29,069 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 189 selfloop transitions, 34 changer transitions 14/239 dead transitions. [2024-06-21 15:49:29,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 239 transitions, 2664 flow [2024-06-21 15:49:29,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 15:49:29,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 15:49:29,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-21 15:49:29,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34139784946236557 [2024-06-21 15:49:29,070 INFO L175 Difference]: Start difference. First operand has 330 places, 218 transitions, 2130 flow. Second operand 12 states and 127 transitions. [2024-06-21 15:49:29,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 239 transitions, 2664 flow [2024-06-21 15:49:29,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 239 transitions, 2588 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-21 15:49:29,560 INFO L231 Difference]: Finished difference. Result has 325 places, 214 transitions, 2090 flow [2024-06-21 15:49:29,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2054, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2090, PETRI_PLACES=325, PETRI_TRANSITIONS=214} [2024-06-21 15:49:29,560 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 295 predicate places. [2024-06-21 15:49:29,560 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 214 transitions, 2090 flow [2024-06-21 15:49:29,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:49:29,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:49:29,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:49:29,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-21 15:49:29,562 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:49:29,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:49:29,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1553684801, now seen corresponding path program 1 times [2024-06-21 15:49:29,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:49:29,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018130908] [2024-06-21 15:49:29,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:49:29,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:49:29,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:49:30,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:49:30,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:49:30,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018130908] [2024-06-21 15:49:30,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018130908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:49:30,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:49:30,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:49:30,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893395133] [2024-06-21 15:49:30,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:49:30,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:49:30,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:49:30,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:49:30,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:49:31,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:49:31,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 214 transitions, 2090 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:49:31,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:49:31,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:49:31,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:49:31,591 INFO L124 PetriNetUnfolderBase]: 599/1214 cut-off events. [2024-06-21 15:49:31,591 INFO L125 PetriNetUnfolderBase]: For 115847/115847 co-relation queries the response was YES. [2024-06-21 15:49:31,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6977 conditions, 1214 events. 599/1214 cut-off events. For 115847/115847 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 7007 event pairs, 175 based on Foata normal form. 8/1220 useless extension candidates. Maximal degree in co-relation 6831. Up to 1040 conditions per place. [2024-06-21 15:49:31,602 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 189 selfloop transitions, 37 changer transitions 10/238 dead transitions. [2024-06-21 15:49:31,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 238 transitions, 2682 flow [2024-06-21 15:49:31,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:49:31,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:49:31,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-21 15:49:31,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-21 15:49:31,603 INFO L175 Difference]: Start difference. First operand has 325 places, 214 transitions, 2090 flow. Second operand 11 states and 121 transitions. [2024-06-21 15:49:31,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 238 transitions, 2682 flow [2024-06-21 15:49:32,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 238 transitions, 2606 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-21 15:49:32,168 INFO L231 Difference]: Finished difference. Result has 320 places, 215 transitions, 2113 flow [2024-06-21 15:49:32,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2014, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2113, PETRI_PLACES=320, PETRI_TRANSITIONS=215} [2024-06-21 15:49:32,169 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 290 predicate places. [2024-06-21 15:49:32,169 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 215 transitions, 2113 flow [2024-06-21 15:49:32,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:49:32,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:49:32,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:49:32,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-21 15:49:32,170 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:49:32,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:49:32,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1162201075, now seen corresponding path program 2 times [2024-06-21 15:49:32,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:49:32,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923319598] [2024-06-21 15:49:32,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:49:32,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:49:32,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:49:33,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:49:33,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:49:33,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923319598] [2024-06-21 15:49:33,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923319598] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:49:33,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:49:33,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:49:33,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179671868] [2024-06-21 15:49:33,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:49:33,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:49:33,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:49:33,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:49:33,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:49:33,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:49:33,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 215 transitions, 2113 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:49:33,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:49:33,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:49:33,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:49:34,351 INFO L124 PetriNetUnfolderBase]: 593/1204 cut-off events. [2024-06-21 15:49:34,351 INFO L125 PetriNetUnfolderBase]: For 116551/116551 co-relation queries the response was YES. [2024-06-21 15:49:34,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6942 conditions, 1204 events. 593/1204 cut-off events. For 116551/116551 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 6899 event pairs, 171 based on Foata normal form. 8/1211 useless extension candidates. Maximal degree in co-relation 6796. Up to 1024 conditions per place. [2024-06-21 15:49:34,361 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 184 selfloop transitions, 38 changer transitions 11/235 dead transitions. [2024-06-21 15:49:34,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 235 transitions, 2661 flow [2024-06-21 15:49:34,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 15:49:34,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 15:49:34,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-21 15:49:34,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-21 15:49:34,362 INFO L175 Difference]: Start difference. First operand has 320 places, 215 transitions, 2113 flow. Second operand 12 states and 128 transitions. [2024-06-21 15:49:34,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 235 transitions, 2661 flow [2024-06-21 15:49:34,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 235 transitions, 2586 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-21 15:49:34,932 INFO L231 Difference]: Finished difference. Result has 321 places, 211 transitions, 2084 flow [2024-06-21 15:49:34,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2038, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2084, PETRI_PLACES=321, PETRI_TRANSITIONS=211} [2024-06-21 15:49:34,933 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 291 predicate places. [2024-06-21 15:49:34,933 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 211 transitions, 2084 flow [2024-06-21 15:49:34,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:49:34,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:49:34,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:49:34,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-21 15:49:34,933 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:49:34,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:49:34,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1857111271, now seen corresponding path program 7 times [2024-06-21 15:49:34,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:49:34,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937804791] [2024-06-21 15:49:34,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:49:34,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:49:34,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:49:36,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:49:36,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:49:36,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937804791] [2024-06-21 15:49:36,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937804791] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:49:36,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:49:36,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:49:36,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392314717] [2024-06-21 15:49:36,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:49:36,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:49:36,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:49:36,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:49:36,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:49:37,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:49:37,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 211 transitions, 2084 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:49:37,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:49:37,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:49:37,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:49:37,736 INFO L124 PetriNetUnfolderBase]: 583/1186 cut-off events. [2024-06-21 15:49:37,736 INFO L125 PetriNetUnfolderBase]: For 110573/110573 co-relation queries the response was YES. [2024-06-21 15:49:37,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6847 conditions, 1186 events. 583/1186 cut-off events. For 110573/110573 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 6809 event pairs, 165 based on Foata normal form. 6/1191 useless extension candidates. Maximal degree in co-relation 6702. Up to 1002 conditions per place. [2024-06-21 15:49:37,747 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 177 selfloop transitions, 27 changer transitions 24/230 dead transitions. [2024-06-21 15:49:37,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 230 transitions, 2604 flow [2024-06-21 15:49:37,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:49:37,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:49:37,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-21 15:49:37,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-21 15:49:37,748 INFO L175 Difference]: Start difference. First operand has 321 places, 211 transitions, 2084 flow. Second operand 11 states and 120 transitions. [2024-06-21 15:49:37,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 230 transitions, 2604 flow [2024-06-21 15:49:38,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 230 transitions, 2511 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-21 15:49:38,251 INFO L231 Difference]: Finished difference. Result has 316 places, 195 transitions, 1859 flow [2024-06-21 15:49:38,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1991, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1859, PETRI_PLACES=316, PETRI_TRANSITIONS=195} [2024-06-21 15:49:38,251 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 286 predicate places. [2024-06-21 15:49:38,251 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 195 transitions, 1859 flow [2024-06-21 15:49:38,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:49:38,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:49:38,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:49:38,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-21 15:49:38,252 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:49:38,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:49:38,252 INFO L85 PathProgramCache]: Analyzing trace with hash 590659413, now seen corresponding path program 8 times [2024-06-21 15:49:38,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:49:38,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179818953] [2024-06-21 15:49:38,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:49:38,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:49:38,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:49:39,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:49:39,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:49:39,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179818953] [2024-06-21 15:49:39,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179818953] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:49:39,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:49:39,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:49:39,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826699987] [2024-06-21 15:49:39,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:49:39,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:49:39,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:49:39,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:49:39,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:49:39,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:49:39,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 195 transitions, 1859 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:49:39,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:49:39,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:49:39,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:49:40,150 INFO L124 PetriNetUnfolderBase]: 541/1101 cut-off events. [2024-06-21 15:49:40,151 INFO L125 PetriNetUnfolderBase]: For 109768/109768 co-relation queries the response was YES. [2024-06-21 15:49:40,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6359 conditions, 1101 events. 541/1101 cut-off events. For 109768/109768 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 6208 event pairs, 159 based on Foata normal form. 6/1106 useless extension candidates. Maximal degree in co-relation 6216. Up to 964 conditions per place. [2024-06-21 15:49:40,161 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 174 selfloop transitions, 21 changer transitions 19/216 dead transitions. [2024-06-21 15:49:40,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 216 transitions, 2339 flow [2024-06-21 15:49:40,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 15:49:40,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 15:49:40,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 123 transitions. [2024-06-21 15:49:40,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33064516129032256 [2024-06-21 15:49:40,162 INFO L175 Difference]: Start difference. First operand has 316 places, 195 transitions, 1859 flow. Second operand 12 states and 123 transitions. [2024-06-21 15:49:40,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 216 transitions, 2339 flow [2024-06-21 15:49:40,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 216 transitions, 2245 flow, removed 3 selfloop flow, removed 21 redundant places. [2024-06-21 15:49:40,652 INFO L231 Difference]: Finished difference. Result has 303 places, 188 transitions, 1739 flow [2024-06-21 15:49:40,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1765, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1739, PETRI_PLACES=303, PETRI_TRANSITIONS=188} [2024-06-21 15:49:40,652 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 273 predicate places. [2024-06-21 15:49:40,652 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 188 transitions, 1739 flow [2024-06-21 15:49:40,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:49:40,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:49:40,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:49:40,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-21 15:49:40,652 INFO L420 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:49:40,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:49:40,653 INFO L85 PathProgramCache]: Analyzing trace with hash -907597937, now seen corresponding path program 9 times [2024-06-21 15:49:40,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:49:40,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283595184] [2024-06-21 15:49:40,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:49:40,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:49:40,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:49:41,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:49:41,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:49:41,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283595184] [2024-06-21 15:49:41,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283595184] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:49:41,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:49:41,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:49:41,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531686410] [2024-06-21 15:49:41,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:49:41,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:49:41,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:49:41,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:49:41,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:49:41,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:49:41,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 188 transitions, 1739 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:49:41,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:49:41,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:49:41,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:49:42,380 INFO L124 PetriNetUnfolderBase]: 522/1060 cut-off events. [2024-06-21 15:49:42,380 INFO L125 PetriNetUnfolderBase]: For 106851/106851 co-relation queries the response was YES. [2024-06-21 15:49:42,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6125 conditions, 1060 events. 522/1060 cut-off events. For 106851/106851 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 5877 event pairs, 102 based on Foata normal form. 6/1065 useless extension candidates. Maximal degree in co-relation 5988. Up to 877 conditions per place. [2024-06-21 15:49:42,389 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 163 selfloop transitions, 21 changer transitions 25/211 dead transitions. [2024-06-21 15:49:42,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 211 transitions, 2213 flow [2024-06-21 15:49:42,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 15:49:42,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 15:49:42,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 119 transitions. [2024-06-21 15:49:42,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31989247311827956 [2024-06-21 15:49:42,390 INFO L175 Difference]: Start difference. First operand has 303 places, 188 transitions, 1739 flow. Second operand 12 states and 119 transitions. [2024-06-21 15:49:42,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 211 transitions, 2213 flow [2024-06-21 15:49:42,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 211 transitions, 2132 flow, removed 5 selfloop flow, removed 15 redundant places. [2024-06-21 15:49:42,805 INFO L231 Difference]: Finished difference. Result has 291 places, 179 transitions, 1624 flow [2024-06-21 15:49:42,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1658, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1624, PETRI_PLACES=291, PETRI_TRANSITIONS=179} [2024-06-21 15:49:42,805 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 261 predicate places. [2024-06-21 15:49:42,805 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 179 transitions, 1624 flow [2024-06-21 15:49:42,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:49:42,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:49:42,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:49:42,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-21 15:49:42,806 INFO L420 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:49:42,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:49:42,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1076815893, now seen corresponding path program 10 times [2024-06-21 15:49:42,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:49:42,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673269721] [2024-06-21 15:49:42,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:49:42,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:49:42,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:49:44,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:49:44,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:49:44,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673269721] [2024-06-21 15:49:44,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673269721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:49:44,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:49:44,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:49:44,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333967435] [2024-06-21 15:49:44,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:49:44,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:49:44,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:49:44,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:49:44,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:49:44,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:49:44,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 179 transitions, 1624 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:49:44,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:49:44,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:49:44,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:49:45,269 INFO L124 PetriNetUnfolderBase]: 503/1013 cut-off events. [2024-06-21 15:49:45,269 INFO L125 PetriNetUnfolderBase]: For 106751/106751 co-relation queries the response was YES. [2024-06-21 15:49:45,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5906 conditions, 1013 events. 503/1013 cut-off events. For 106751/106751 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 5588 event pairs, 135 based on Foata normal form. 6/1018 useless extension candidates. Maximal degree in co-relation 5774. Up to 897 conditions per place. [2024-06-21 15:49:45,278 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 162 selfloop transitions, 23 changer transitions 12/199 dead transitions. [2024-06-21 15:49:45,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 199 transitions, 2093 flow [2024-06-21 15:49:45,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:49:45,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:49:45,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-21 15:49:45,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3313782991202346 [2024-06-21 15:49:45,279 INFO L175 Difference]: Start difference. First operand has 291 places, 179 transitions, 1624 flow. Second operand 11 states and 113 transitions. [2024-06-21 15:49:45,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 199 transitions, 2093 flow [2024-06-21 15:49:45,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 199 transitions, 1977 flow, removed 5 selfloop flow, removed 19 redundant places. [2024-06-21 15:49:45,664 INFO L231 Difference]: Finished difference. Result has 273 places, 177 transitions, 1532 flow [2024-06-21 15:49:45,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1508, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1532, PETRI_PLACES=273, PETRI_TRANSITIONS=177} [2024-06-21 15:49:45,664 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 243 predicate places. [2024-06-21 15:49:45,665 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 177 transitions, 1532 flow [2024-06-21 15:49:45,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:49:45,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:49:45,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:49:45,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-21 15:49:45,665 INFO L420 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:49:45,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:49:45,665 INFO L85 PathProgramCache]: Analyzing trace with hash -421034435, now seen corresponding path program 11 times [2024-06-21 15:49:45,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:49:45,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462700714] [2024-06-21 15:49:45,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:49:45,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:49:45,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:49:47,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:49:47,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:49:47,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462700714] [2024-06-21 15:49:47,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462700714] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:49:47,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:49:47,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:49:47,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516695059] [2024-06-21 15:49:47,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:49:47,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:49:47,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:49:47,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:49:47,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:49:47,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:49:47,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 177 transitions, 1532 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:49:47,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:49:47,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:49:47,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:49:47,904 INFO L124 PetriNetUnfolderBase]: 489/987 cut-off events. [2024-06-21 15:49:47,904 INFO L125 PetriNetUnfolderBase]: For 105999/105999 co-relation queries the response was YES. [2024-06-21 15:49:47,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5708 conditions, 987 events. 489/987 cut-off events. For 105999/105999 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 5400 event pairs, 125 based on Foata normal form. 6/992 useless extension candidates. Maximal degree in co-relation 5583. Up to 869 conditions per place. [2024-06-21 15:49:47,912 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 160 selfloop transitions, 18 changer transitions 17/197 dead transitions. [2024-06-21 15:49:47,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 197 transitions, 1972 flow [2024-06-21 15:49:47,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 15:49:47,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 15:49:47,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 120 transitions. [2024-06-21 15:49:47,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-21 15:49:47,912 INFO L175 Difference]: Start difference. First operand has 273 places, 177 transitions, 1532 flow. Second operand 12 states and 120 transitions. [2024-06-21 15:49:47,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 197 transitions, 1972 flow [2024-06-21 15:49:48,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 197 transitions, 1918 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-21 15:49:48,224 INFO L231 Difference]: Finished difference. Result has 272 places, 172 transitions, 1470 flow [2024-06-21 15:49:48,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1478, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1470, PETRI_PLACES=272, PETRI_TRANSITIONS=172} [2024-06-21 15:49:48,224 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 242 predicate places. [2024-06-21 15:49:48,224 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 172 transitions, 1470 flow [2024-06-21 15:49:48,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:49:48,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:49:48,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:49:48,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-21 15:49:48,225 INFO L420 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:49:48,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:49:48,225 INFO L85 PathProgramCache]: Analyzing trace with hash -73709485, now seen corresponding path program 12 times [2024-06-21 15:49:48,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:49:48,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897496274] [2024-06-21 15:49:48,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:49:48,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:49:48,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:49:50,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:49:50,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:49:50,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897496274] [2024-06-21 15:49:50,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897496274] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:49:50,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:49:50,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:49:50,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816042588] [2024-06-21 15:49:50,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:49:50,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:49:50,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:49:50,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:49:50,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:49:50,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:49:50,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 172 transitions, 1470 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:49:50,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:49:50,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:49:50,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:49:50,931 INFO L124 PetriNetUnfolderBase]: 471/953 cut-off events. [2024-06-21 15:49:50,931 INFO L125 PetriNetUnfolderBase]: For 106019/106019 co-relation queries the response was YES. [2024-06-21 15:49:50,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5560 conditions, 953 events. 471/953 cut-off events. For 106019/106019 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 5191 event pairs, 126 based on Foata normal form. 6/958 useless extension candidates. Maximal degree in co-relation 5436. Up to 828 conditions per place. [2024-06-21 15:49:50,938 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 153 selfloop transitions, 24 changer transitions 14/193 dead transitions. [2024-06-21 15:49:50,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 193 transitions, 1928 flow [2024-06-21 15:49:50,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 15:49:50,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 15:49:50,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 123 transitions. [2024-06-21 15:49:50,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33064516129032256 [2024-06-21 15:49:50,939 INFO L175 Difference]: Start difference. First operand has 272 places, 172 transitions, 1470 flow. Second operand 12 states and 123 transitions. [2024-06-21 15:49:50,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 193 transitions, 1928 flow [2024-06-21 15:49:51,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 193 transitions, 1882 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-21 15:49:51,297 INFO L231 Difference]: Finished difference. Result has 264 places, 168 transitions, 1439 flow [2024-06-21 15:49:51,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1424, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1439, PETRI_PLACES=264, PETRI_TRANSITIONS=168} [2024-06-21 15:49:51,297 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 234 predicate places. [2024-06-21 15:49:51,297 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 168 transitions, 1439 flow [2024-06-21 15:49:51,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:49:51,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:49:51,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:49:51,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-21 15:49:51,297 INFO L420 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:49:51,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:49:51,298 INFO L85 PathProgramCache]: Analyzing trace with hash -305743265, now seen corresponding path program 13 times [2024-06-21 15:49:51,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:49:51,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248052312] [2024-06-21 15:49:51,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:49:51,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:49:51,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:49:52,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:49:52,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:49:52,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248052312] [2024-06-21 15:49:52,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248052312] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:49:52,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:49:52,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:49:52,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173562173] [2024-06-21 15:49:52,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:49:52,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:49:52,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:49:52,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:49:52,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:49:52,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:49:52,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 168 transitions, 1439 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:49:52,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:49:52,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:49:52,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:49:53,480 INFO L124 PetriNetUnfolderBase]: 457/927 cut-off events. [2024-06-21 15:49:53,480 INFO L125 PetriNetUnfolderBase]: For 106002/106002 co-relation queries the response was YES. [2024-06-21 15:49:53,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5447 conditions, 927 events. 457/927 cut-off events. For 106002/106002 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4999 event pairs, 119 based on Foata normal form. 6/932 useless extension candidates. Maximal degree in co-relation 5327. Up to 804 conditions per place. [2024-06-21 15:49:53,487 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 152 selfloop transitions, 24 changer transitions 9/187 dead transitions. [2024-06-21 15:49:53,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 187 transitions, 1865 flow [2024-06-21 15:49:53,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 15:49:53,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 15:49:53,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 122 transitions. [2024-06-21 15:49:53,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3279569892473118 [2024-06-21 15:49:53,488 INFO L175 Difference]: Start difference. First operand has 264 places, 168 transitions, 1439 flow. Second operand 12 states and 122 transitions. [2024-06-21 15:49:53,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 187 transitions, 1865 flow [2024-06-21 15:49:53,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 187 transitions, 1809 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-21 15:49:53,816 INFO L231 Difference]: Finished difference. Result has 259 places, 165 transitions, 1409 flow [2024-06-21 15:49:53,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1383, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1409, PETRI_PLACES=259, PETRI_TRANSITIONS=165} [2024-06-21 15:49:53,817 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 229 predicate places. [2024-06-21 15:49:53,817 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 165 transitions, 1409 flow [2024-06-21 15:49:53,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:49:53,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:49:53,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:49:53,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-21 15:49:53,817 INFO L420 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:49:53,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:49:53,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1643444929, now seen corresponding path program 14 times [2024-06-21 15:49:53,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:49:53,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687083588] [2024-06-21 15:49:53,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:49:53,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:49:53,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:49:55,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:49:55,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:49:55,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687083588] [2024-06-21 15:49:55,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687083588] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:49:55,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:49:55,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:49:55,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225413244] [2024-06-21 15:49:55,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:49:55,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:49:55,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:49:55,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:49:55,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:49:56,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:49:56,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 165 transitions, 1409 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:49:56,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:49:56,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:49:56,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:49:56,630 INFO L124 PetriNetUnfolderBase]: 447/909 cut-off events. [2024-06-21 15:49:56,630 INFO L125 PetriNetUnfolderBase]: For 106099/106099 co-relation queries the response was YES. [2024-06-21 15:49:56,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5366 conditions, 909 events. 447/909 cut-off events. For 106099/106099 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4893 event pairs, 122 based on Foata normal form. 6/914 useless extension candidates. Maximal degree in co-relation 5248. Up to 783 conditions per place. [2024-06-21 15:49:56,636 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 145 selfloop transitions, 22 changer transitions 16/185 dead transitions. [2024-06-21 15:49:56,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 185 transitions, 1841 flow [2024-06-21 15:49:56,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 15:49:56,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 15:49:56,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 121 transitions. [2024-06-21 15:49:56,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32526881720430106 [2024-06-21 15:49:56,637 INFO L175 Difference]: Start difference. First operand has 259 places, 165 transitions, 1409 flow. Second operand 12 states and 121 transitions. [2024-06-21 15:49:56,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 185 transitions, 1841 flow [2024-06-21 15:49:56,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 185 transitions, 1787 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-21 15:49:56,933 INFO L231 Difference]: Finished difference. Result has 255 places, 160 transitions, 1367 flow [2024-06-21 15:49:56,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1355, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1367, PETRI_PLACES=255, PETRI_TRANSITIONS=160} [2024-06-21 15:49:56,934 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 225 predicate places. [2024-06-21 15:49:56,934 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 160 transitions, 1367 flow [2024-06-21 15:49:56,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:49:56,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:49:56,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:49:56,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-21 15:49:56,934 INFO L420 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:49:56,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:49:56,934 INFO L85 PathProgramCache]: Analyzing trace with hash -305570285, now seen corresponding path program 15 times [2024-06-21 15:49:56,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:49:56,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454042208] [2024-06-21 15:49:56,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:49:56,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:49:56,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:49:58,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:49:58,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:49:58,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454042208] [2024-06-21 15:49:58,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454042208] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:49:58,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:49:58,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:49:58,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242445274] [2024-06-21 15:49:58,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:49:58,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:49:58,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:49:58,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:49:58,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:49:58,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:49:58,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 160 transitions, 1367 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:49:58,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:49:58,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:49:58,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:49:58,855 INFO L124 PetriNetUnfolderBase]: 438/890 cut-off events. [2024-06-21 15:49:58,856 INFO L125 PetriNetUnfolderBase]: For 112720/112720 co-relation queries the response was YES. [2024-06-21 15:49:58,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5307 conditions, 890 events. 438/890 cut-off events. For 112720/112720 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4738 event pairs, 121 based on Foata normal form. 8/897 useless extension candidates. Maximal degree in co-relation 5191. Up to 766 conditions per place. [2024-06-21 15:49:58,863 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 141 selfloop transitions, 20 changer transitions 14/177 dead transitions. [2024-06-21 15:49:58,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 177 transitions, 1785 flow [2024-06-21 15:49:58,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:49:58,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:49:58,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-21 15:49:58,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3343108504398827 [2024-06-21 15:49:58,863 INFO L175 Difference]: Start difference. First operand has 255 places, 160 transitions, 1367 flow. Second operand 11 states and 114 transitions. [2024-06-21 15:49:58,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 177 transitions, 1785 flow [2024-06-21 15:49:59,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 177 transitions, 1720 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-21 15:49:59,143 INFO L231 Difference]: Finished difference. Result has 247 places, 153 transitions, 1289 flow [2024-06-21 15:49:59,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1302, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1289, PETRI_PLACES=247, PETRI_TRANSITIONS=153} [2024-06-21 15:49:59,144 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 217 predicate places. [2024-06-21 15:49:59,144 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 153 transitions, 1289 flow [2024-06-21 15:49:59,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:49:59,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:49:59,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:49:59,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-21 15:49:59,144 INFO L420 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:49:59,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:49:59,144 INFO L85 PathProgramCache]: Analyzing trace with hash -244411915, now seen corresponding path program 16 times [2024-06-21 15:49:59,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:49:59,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079235295] [2024-06-21 15:49:59,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:49:59,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:49:59,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:50:00,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:50:00,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:50:00,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079235295] [2024-06-21 15:50:00,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079235295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:50:00,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:50:00,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:50:00,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258110177] [2024-06-21 15:50:00,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:50:00,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:50:00,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:50:00,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:50:00,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:50:00,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:50:00,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 153 transitions, 1289 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:00,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:50:00,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:50:00,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:50:01,456 INFO L124 PetriNetUnfolderBase]: 406/826 cut-off events. [2024-06-21 15:50:01,456 INFO L125 PetriNetUnfolderBase]: For 84324/84324 co-relation queries the response was YES. [2024-06-21 15:50:01,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4549 conditions, 826 events. 406/826 cut-off events. For 84324/84324 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4327 event pairs, 105 based on Foata normal form. 6/831 useless extension candidates. Maximal degree in co-relation 4434. Up to 701 conditions per place. [2024-06-21 15:50:01,462 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 134 selfloop transitions, 20 changer transitions 16/172 dead transitions. [2024-06-21 15:50:01,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 172 transitions, 1693 flow [2024-06-21 15:50:01,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:50:01,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:50:01,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-21 15:50:01,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3343108504398827 [2024-06-21 15:50:01,463 INFO L175 Difference]: Start difference. First operand has 247 places, 153 transitions, 1289 flow. Second operand 11 states and 114 transitions. [2024-06-21 15:50:01,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 172 transitions, 1693 flow [2024-06-21 15:50:01,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 172 transitions, 1637 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-21 15:50:01,694 INFO L231 Difference]: Finished difference. Result has 239 places, 147 transitions, 1222 flow [2024-06-21 15:50:01,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1233, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1222, PETRI_PLACES=239, PETRI_TRANSITIONS=147} [2024-06-21 15:50:01,694 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 209 predicate places. [2024-06-21 15:50:01,694 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 147 transitions, 1222 flow [2024-06-21 15:50:01,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:01,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:50:01,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:50:01,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-21 15:50:01,695 INFO L420 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:50:01,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:50:01,695 INFO L85 PathProgramCache]: Analyzing trace with hash -310211915, now seen corresponding path program 17 times [2024-06-21 15:50:01,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:50:01,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259874132] [2024-06-21 15:50:01,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:50:01,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:50:01,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:50:03,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:50:03,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:50:03,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259874132] [2024-06-21 15:50:03,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259874132] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:50:03,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:50:03,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:50:03,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490752988] [2024-06-21 15:50:03,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:50:03,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:50:03,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:50:03,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:50:03,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:50:03,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:50:03,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 147 transitions, 1222 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:03,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:50:03,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:50:03,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:50:03,718 INFO L124 PetriNetUnfolderBase]: 389/791 cut-off events. [2024-06-21 15:50:03,718 INFO L125 PetriNetUnfolderBase]: For 84107/84107 co-relation queries the response was YES. [2024-06-21 15:50:03,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4396 conditions, 791 events. 389/791 cut-off events. For 84107/84107 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4071 event pairs, 96 based on Foata normal form. 6/796 useless extension candidates. Maximal degree in co-relation 4285. Up to 670 conditions per place. [2024-06-21 15:50:03,723 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 125 selfloop transitions, 12 changer transitions 28/167 dead transitions. [2024-06-21 15:50:03,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 167 transitions, 1610 flow [2024-06-21 15:50:03,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 15:50:03,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 15:50:03,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 118 transitions. [2024-06-21 15:50:03,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3172043010752688 [2024-06-21 15:50:03,724 INFO L175 Difference]: Start difference. First operand has 239 places, 147 transitions, 1222 flow. Second operand 12 states and 118 transitions. [2024-06-21 15:50:03,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 167 transitions, 1610 flow [2024-06-21 15:50:03,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 167 transitions, 1562 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-21 15:50:03,937 INFO L231 Difference]: Finished difference. Result has 232 places, 135 transitions, 1092 flow [2024-06-21 15:50:03,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1174, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1092, PETRI_PLACES=232, PETRI_TRANSITIONS=135} [2024-06-21 15:50:03,937 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 202 predicate places. [2024-06-21 15:50:03,937 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 135 transitions, 1092 flow [2024-06-21 15:50:03,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:03,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:50:03,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:50:03,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-21 15:50:03,937 INFO L420 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:50:03,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:50:03,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1476410359, now seen corresponding path program 18 times [2024-06-21 15:50:03,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:50:03,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208909187] [2024-06-21 15:50:03,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:50:03,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:50:03,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:50:05,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:50:05,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:50:05,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208909187] [2024-06-21 15:50:05,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208909187] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:50:05,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:50:05,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:50:05,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186806318] [2024-06-21 15:50:05,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:50:05,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:50:05,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:50:05,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:50:05,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:50:05,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:50:05,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 135 transitions, 1092 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:05,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:50:05,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:50:05,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:50:05,944 INFO L124 PetriNetUnfolderBase]: 366/738 cut-off events. [2024-06-21 15:50:05,944 INFO L125 PetriNetUnfolderBase]: For 83929/83929 co-relation queries the response was YES. [2024-06-21 15:50:05,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4158 conditions, 738 events. 366/738 cut-off events. For 83929/83929 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3724 event pairs, 66 based on Foata normal form. 6/743 useless extension candidates. Maximal degree in co-relation 4050. Up to 612 conditions per place. [2024-06-21 15:50:05,949 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 119 selfloop transitions, 14 changer transitions 18/153 dead transitions. [2024-06-21 15:50:05,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 153 transitions, 1438 flow [2024-06-21 15:50:05,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:50:05,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:50:05,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-21 15:50:05,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31085043988269795 [2024-06-21 15:50:05,950 INFO L175 Difference]: Start difference. First operand has 232 places, 135 transitions, 1092 flow. Second operand 11 states and 106 transitions. [2024-06-21 15:50:05,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 153 transitions, 1438 flow [2024-06-21 15:50:06,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 153 transitions, 1341 flow, removed 3 selfloop flow, removed 15 redundant places. [2024-06-21 15:50:06,115 INFO L231 Difference]: Finished difference. Result has 212 places, 130 transitions, 1003 flow [2024-06-21 15:50:06,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=995, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1003, PETRI_PLACES=212, PETRI_TRANSITIONS=130} [2024-06-21 15:50:06,115 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 182 predicate places. [2024-06-21 15:50:06,115 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 130 transitions, 1003 flow [2024-06-21 15:50:06,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:06,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:50:06,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:50:06,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-21 15:50:06,116 INFO L420 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:50:06,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:50:06,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1579502481, now seen corresponding path program 19 times [2024-06-21 15:50:06,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:50:06,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556297565] [2024-06-21 15:50:06,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:50:06,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:50:06,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:50:07,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:50:07,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:50:07,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556297565] [2024-06-21 15:50:07,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556297565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:50:07,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:50:07,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:50:07,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365812350] [2024-06-21 15:50:07,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:50:07,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:50:07,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:50:07,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:50:07,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:50:07,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:50:07,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 130 transitions, 1003 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:07,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:50:07,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:50:07,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:50:08,100 INFO L124 PetriNetUnfolderBase]: 346/702 cut-off events. [2024-06-21 15:50:08,100 INFO L125 PetriNetUnfolderBase]: For 81651/81651 co-relation queries the response was YES. [2024-06-21 15:50:08,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3998 conditions, 702 events. 346/702 cut-off events. For 81651/81651 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3499 event pairs, 81 based on Foata normal form. 6/707 useless extension candidates. Maximal degree in co-relation 3896. Up to 594 conditions per place. [2024-06-21 15:50:08,105 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 109 selfloop transitions, 20 changer transitions 14/145 dead transitions. [2024-06-21 15:50:08,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 145 transitions, 1331 flow [2024-06-21 15:50:08,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:50:08,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:50:08,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-21 15:50:08,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33225806451612905 [2024-06-21 15:50:08,106 INFO L175 Difference]: Start difference. First operand has 212 places, 130 transitions, 1003 flow. Second operand 10 states and 103 transitions. [2024-06-21 15:50:08,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 145 transitions, 1331 flow [2024-06-21 15:50:08,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 145 transitions, 1293 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-21 15:50:08,287 INFO L231 Difference]: Finished difference. Result has 203 places, 125 transitions, 976 flow [2024-06-21 15:50:08,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=965, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=976, PETRI_PLACES=203, PETRI_TRANSITIONS=125} [2024-06-21 15:50:08,288 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 173 predicate places. [2024-06-21 15:50:08,288 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 125 transitions, 976 flow [2024-06-21 15:50:08,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:08,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:50:08,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:50:08,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-21 15:50:08,288 INFO L420 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:50:08,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:50:08,288 INFO L85 PathProgramCache]: Analyzing trace with hash -486945447, now seen corresponding path program 20 times [2024-06-21 15:50:08,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:50:08,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370917938] [2024-06-21 15:50:08,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:50:08,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:50:08,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:50:09,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:50:09,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:50:09,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370917938] [2024-06-21 15:50:09,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370917938] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:50:09,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:50:09,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:50:09,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786598458] [2024-06-21 15:50:09,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:50:09,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:50:09,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:50:09,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:50:09,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:50:09,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:50:09,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 125 transitions, 976 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:09,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:50:09,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:50:09,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:50:09,955 INFO L124 PetriNetUnfolderBase]: 334/682 cut-off events. [2024-06-21 15:50:09,955 INFO L125 PetriNetUnfolderBase]: For 79372/79372 co-relation queries the response was YES. [2024-06-21 15:50:09,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3884 conditions, 682 events. 334/682 cut-off events. For 79372/79372 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3385 event pairs, 87 based on Foata normal form. 8/689 useless extension candidates. Maximal degree in co-relation 3786. Up to 551 conditions per place. [2024-06-21 15:50:09,959 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 101 selfloop transitions, 25 changer transitions 14/142 dead transitions. [2024-06-21 15:50:09,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 142 transitions, 1330 flow [2024-06-21 15:50:09,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:50:09,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:50:09,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-21 15:50:09,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33724340175953077 [2024-06-21 15:50:09,960 INFO L175 Difference]: Start difference. First operand has 203 places, 125 transitions, 976 flow. Second operand 11 states and 115 transitions. [2024-06-21 15:50:09,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 142 transitions, 1330 flow [2024-06-21 15:50:10,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 142 transitions, 1282 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-21 15:50:10,111 INFO L231 Difference]: Finished difference. Result has 198 places, 119 transitions, 941 flow [2024-06-21 15:50:10,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=928, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=941, PETRI_PLACES=198, PETRI_TRANSITIONS=119} [2024-06-21 15:50:10,111 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 168 predicate places. [2024-06-21 15:50:10,111 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 119 transitions, 941 flow [2024-06-21 15:50:10,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:10,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:50:10,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:50:10,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-21 15:50:10,111 INFO L420 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:50:10,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:50:10,112 INFO L85 PathProgramCache]: Analyzing trace with hash -399188203, now seen corresponding path program 21 times [2024-06-21 15:50:10,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:50:10,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609026355] [2024-06-21 15:50:10,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:50:10,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:50:10,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:50:11,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:50:11,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:50:11,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609026355] [2024-06-21 15:50:11,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609026355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:50:11,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:50:11,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:50:11,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136557565] [2024-06-21 15:50:11,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:50:11,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:50:11,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:50:11,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:50:11,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:50:11,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:50:11,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 119 transitions, 941 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:11,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:50:11,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:50:11,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:50:12,378 INFO L124 PetriNetUnfolderBase]: 318/654 cut-off events. [2024-06-21 15:50:12,378 INFO L125 PetriNetUnfolderBase]: For 67805/67805 co-relation queries the response was YES. [2024-06-21 15:50:12,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3711 conditions, 654 events. 318/654 cut-off events. For 67805/67805 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3217 event pairs, 81 based on Foata normal form. 6/659 useless extension candidates. Maximal degree in co-relation 3616. Up to 531 conditions per place. [2024-06-21 15:50:12,382 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 97 selfloop transitions, 19 changer transitions 19/137 dead transitions. [2024-06-21 15:50:12,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 137 transitions, 1271 flow [2024-06-21 15:50:12,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:50:12,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:50:12,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-21 15:50:12,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255131964809384 [2024-06-21 15:50:12,383 INFO L175 Difference]: Start difference. First operand has 198 places, 119 transitions, 941 flow. Second operand 11 states and 111 transitions. [2024-06-21 15:50:12,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 137 transitions, 1271 flow [2024-06-21 15:50:12,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 137 transitions, 1196 flow, removed 4 selfloop flow, removed 14 redundant places. [2024-06-21 15:50:12,517 INFO L231 Difference]: Finished difference. Result has 191 places, 112 transitions, 856 flow [2024-06-21 15:50:12,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=866, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=856, PETRI_PLACES=191, PETRI_TRANSITIONS=112} [2024-06-21 15:50:12,518 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 161 predicate places. [2024-06-21 15:50:12,518 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 112 transitions, 856 flow [2024-06-21 15:50:12,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:12,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:50:12,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:50:12,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-21 15:50:12,518 INFO L420 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:50:12,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:50:12,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1468679961, now seen corresponding path program 22 times [2024-06-21 15:50:12,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:50:12,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344852270] [2024-06-21 15:50:12,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:50:12,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:50:12,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:50:13,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:50:13,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:50:13,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344852270] [2024-06-21 15:50:13,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344852270] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:50:13,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:50:13,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:50:13,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450035193] [2024-06-21 15:50:13,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:50:13,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:50:13,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:50:13,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:50:13,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:50:14,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:50:14,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 112 transitions, 856 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:14,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:50:14,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:50:14,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:50:14,565 INFO L124 PetriNetUnfolderBase]: 302/626 cut-off events. [2024-06-21 15:50:14,566 INFO L125 PetriNetUnfolderBase]: For 62274/62274 co-relation queries the response was YES. [2024-06-21 15:50:14,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3500 conditions, 626 events. 302/626 cut-off events. For 62274/62274 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3045 event pairs, 75 based on Foata normal form. 6/631 useless extension candidates. Maximal degree in co-relation 3409. Up to 524 conditions per place. [2024-06-21 15:50:14,571 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 93 selfloop transitions, 12 changer transitions 22/129 dead transitions. [2024-06-21 15:50:14,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 129 transitions, 1152 flow [2024-06-21 15:50:14,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:50:14,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:50:14,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 108 transitions. [2024-06-21 15:50:14,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31671554252199413 [2024-06-21 15:50:14,573 INFO L175 Difference]: Start difference. First operand has 191 places, 112 transitions, 856 flow. Second operand 11 states and 108 transitions. [2024-06-21 15:50:14,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 129 transitions, 1152 flow [2024-06-21 15:50:14,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 129 transitions, 1092 flow, removed 5 selfloop flow, removed 14 redundant places. [2024-06-21 15:50:14,702 INFO L231 Difference]: Finished difference. Result has 183 places, 103 transitions, 766 flow [2024-06-21 15:50:14,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=796, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=766, PETRI_PLACES=183, PETRI_TRANSITIONS=103} [2024-06-21 15:50:14,702 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 153 predicate places. [2024-06-21 15:50:14,702 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 103 transitions, 766 flow [2024-06-21 15:50:14,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:14,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:50:14,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:50:14,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-21 15:50:14,703 INFO L420 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:50:14,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:50:14,703 INFO L85 PathProgramCache]: Analyzing trace with hash 111421209, now seen corresponding path program 23 times [2024-06-21 15:50:14,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:50:14,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046288898] [2024-06-21 15:50:14,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:50:14,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:50:14,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:50:16,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:50:16,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:50:16,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046288898] [2024-06-21 15:50:16,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046288898] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:50:16,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:50:16,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:50:16,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637671251] [2024-06-21 15:50:16,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:50:16,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:50:16,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:50:16,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:50:16,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:50:16,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:50:16,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 103 transitions, 766 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:16,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:50:16,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:50:16,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:50:17,266 INFO L124 PetriNetUnfolderBase]: 266/546 cut-off events. [2024-06-21 15:50:17,266 INFO L125 PetriNetUnfolderBase]: For 55222/55222 co-relation queries the response was YES. [2024-06-21 15:50:17,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3101 conditions, 546 events. 266/546 cut-off events. For 55222/55222 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2530 event pairs, 69 based on Foata normal form. 6/551 useless extension candidates. Maximal degree in co-relation 3014. Up to 462 conditions per place. [2024-06-21 15:50:17,269 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 89 selfloop transitions, 11 changer transitions 17/119 dead transitions. [2024-06-21 15:50:17,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 119 transitions, 1038 flow [2024-06-21 15:50:17,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:50:17,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:50:17,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 103 transitions. [2024-06-21 15:50:17,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3020527859237537 [2024-06-21 15:50:17,271 INFO L175 Difference]: Start difference. First operand has 183 places, 103 transitions, 766 flow. Second operand 11 states and 103 transitions. [2024-06-21 15:50:17,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 119 transitions, 1038 flow [2024-06-21 15:50:17,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 119 transitions, 963 flow, removed 5 selfloop flow, removed 15 redundant places. [2024-06-21 15:50:17,376 INFO L231 Difference]: Finished difference. Result has 170 places, 98 transitions, 690 flow [2024-06-21 15:50:17,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=691, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=690, PETRI_PLACES=170, PETRI_TRANSITIONS=98} [2024-06-21 15:50:17,376 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 140 predicate places. [2024-06-21 15:50:17,376 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 98 transitions, 690 flow [2024-06-21 15:50:17,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:17,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:50:17,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:50:17,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-21 15:50:17,377 INFO L420 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:50:17,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:50:17,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1103356617, now seen corresponding path program 24 times [2024-06-21 15:50:17,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:50:17,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736628994] [2024-06-21 15:50:17,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:50:17,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:50:17,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:50:18,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:50:18,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:50:18,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736628994] [2024-06-21 15:50:18,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736628994] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:50:18,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:50:18,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:50:18,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055581158] [2024-06-21 15:50:18,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:50:18,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:50:18,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:50:18,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:50:18,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:50:18,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:50:18,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 98 transitions, 690 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:18,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:50:18,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:50:18,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:50:19,014 INFO L124 PetriNetUnfolderBase]: 233/479 cut-off events. [2024-06-21 15:50:19,014 INFO L125 PetriNetUnfolderBase]: For 37479/37479 co-relation queries the response was YES. [2024-06-21 15:50:19,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2448 conditions, 479 events. 233/479 cut-off events. For 37479/37479 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2130 event pairs, 57 based on Foata normal form. 6/484 useless extension candidates. Maximal degree in co-relation 2366. Up to 355 conditions per place. [2024-06-21 15:50:19,017 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 74 selfloop transitions, 21 changer transitions 15/112 dead transitions. [2024-06-21 15:50:19,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 112 transitions, 952 flow [2024-06-21 15:50:19,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:50:19,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:50:19,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-21 15:50:19,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31085043988269795 [2024-06-21 15:50:19,017 INFO L175 Difference]: Start difference. First operand has 170 places, 98 transitions, 690 flow. Second operand 11 states and 106 transitions. [2024-06-21 15:50:19,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 112 transitions, 952 flow [2024-06-21 15:50:19,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 112 transitions, 920 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-21 15:50:19,085 INFO L231 Difference]: Finished difference. Result has 162 places, 92 transitions, 667 flow [2024-06-21 15:50:19,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=658, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=667, PETRI_PLACES=162, PETRI_TRANSITIONS=92} [2024-06-21 15:50:19,085 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 132 predicate places. [2024-06-21 15:50:19,085 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 92 transitions, 667 flow [2024-06-21 15:50:19,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:19,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:50:19,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:50:19,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-21 15:50:19,086 INFO L420 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:50:19,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:50:19,086 INFO L85 PathProgramCache]: Analyzing trace with hash -452823153, now seen corresponding path program 25 times [2024-06-21 15:50:19,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:50:19,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29106697] [2024-06-21 15:50:19,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:50:19,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:50:19,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:50:20,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:50:20,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:50:20,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29106697] [2024-06-21 15:50:20,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29106697] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:50:20,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:50:20,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:50:20,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758484471] [2024-06-21 15:50:20,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:50:20,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:50:20,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:50:20,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:50:20,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:50:20,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:50:20,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 92 transitions, 667 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:20,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:50:20,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:50:20,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:50:20,865 INFO L124 PetriNetUnfolderBase]: 221/455 cut-off events. [2024-06-21 15:50:20,865 INFO L125 PetriNetUnfolderBase]: For 32789/32789 co-relation queries the response was YES. [2024-06-21 15:50:20,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2320 conditions, 455 events. 221/455 cut-off events. For 32789/32789 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1984 event pairs, 55 based on Foata normal form. 6/460 useless extension candidates. Maximal degree in co-relation 2242. Up to 359 conditions per place. [2024-06-21 15:50:20,867 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 71 selfloop transitions, 18 changer transitions 15/106 dead transitions. [2024-06-21 15:50:20,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 106 transitions, 909 flow [2024-06-21 15:50:20,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:50:20,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:50:20,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-21 15:50:20,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31085043988269795 [2024-06-21 15:50:20,868 INFO L175 Difference]: Start difference. First operand has 162 places, 92 transitions, 667 flow. Second operand 11 states and 106 transitions. [2024-06-21 15:50:20,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 106 transitions, 909 flow [2024-06-21 15:50:20,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 106 transitions, 855 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-21 15:50:20,924 INFO L231 Difference]: Finished difference. Result has 153 places, 86 transitions, 616 flow [2024-06-21 15:50:20,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=613, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=616, PETRI_PLACES=153, PETRI_TRANSITIONS=86} [2024-06-21 15:50:20,924 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 123 predicate places. [2024-06-21 15:50:20,924 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 86 transitions, 616 flow [2024-06-21 15:50:20,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:20,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:50:20,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:50:20,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-21 15:50:20,925 INFO L420 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:50:20,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:50:20,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1294164431, now seen corresponding path program 26 times [2024-06-21 15:50:20,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:50:20,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541218310] [2024-06-21 15:50:20,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:50:20,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:50:20,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:50:22,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:50:22,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:50:22,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541218310] [2024-06-21 15:50:22,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541218310] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:50:22,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:50:22,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:50:22,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809409878] [2024-06-21 15:50:22,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:50:22,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:50:22,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:50:22,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:50:22,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:50:22,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:50:22,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 86 transitions, 616 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:22,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:50:22,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:50:22,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:50:22,967 INFO L124 PetriNetUnfolderBase]: 219/453 cut-off events. [2024-06-21 15:50:22,967 INFO L125 PetriNetUnfolderBase]: For 28343/28343 co-relation queries the response was YES. [2024-06-21 15:50:22,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2226 conditions, 453 events. 219/453 cut-off events. For 28343/28343 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1978 event pairs, 55 based on Foata normal form. 6/458 useless extension candidates. Maximal degree in co-relation 2152. Up to 371 conditions per place. [2024-06-21 15:50:22,969 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 74 selfloop transitions, 14 changer transitions 14/104 dead transitions. [2024-06-21 15:50:22,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 104 transitions, 867 flow [2024-06-21 15:50:22,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:50:22,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:50:22,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 103 transitions. [2024-06-21 15:50:22,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3020527859237537 [2024-06-21 15:50:22,970 INFO L175 Difference]: Start difference. First operand has 153 places, 86 transitions, 616 flow. Second operand 11 states and 103 transitions. [2024-06-21 15:50:22,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 104 transitions, 867 flow [2024-06-21 15:50:23,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 104 transitions, 815 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-21 15:50:23,026 INFO L231 Difference]: Finished difference. Result has 149 places, 85 transitions, 590 flow [2024-06-21 15:50:23,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=590, PETRI_PLACES=149, PETRI_TRANSITIONS=85} [2024-06-21 15:50:23,027 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 119 predicate places. [2024-06-21 15:50:23,027 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 85 transitions, 590 flow [2024-06-21 15:50:23,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:23,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:50:23,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:50:23,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-21 15:50:23,027 INFO L420 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:50:23,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:50:23,027 INFO L85 PathProgramCache]: Analyzing trace with hash -698087689, now seen corresponding path program 27 times [2024-06-21 15:50:23,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:50:23,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132664642] [2024-06-21 15:50:23,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:50:23,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:50:23,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:50:24,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:50:24,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:50:24,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132664642] [2024-06-21 15:50:24,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132664642] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:50:24,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:50:24,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:50:24,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359098995] [2024-06-21 15:50:24,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:50:24,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:50:24,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:50:24,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:50:24,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:50:24,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:50:24,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 85 transitions, 590 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:24,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:50:24,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:50:24,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:50:25,519 INFO L124 PetriNetUnfolderBase]: 220/460 cut-off events. [2024-06-21 15:50:25,519 INFO L125 PetriNetUnfolderBase]: For 32675/32675 co-relation queries the response was YES. [2024-06-21 15:50:25,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2480 conditions, 460 events. 220/460 cut-off events. For 32675/32675 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2024 event pairs, 65 based on Foata normal form. 6/465 useless extension candidates. Maximal degree in co-relation 2406. Up to 304 conditions per place. [2024-06-21 15:50:25,521 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 70 selfloop transitions, 15 changer transitions 15/102 dead transitions. [2024-06-21 15:50:25,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 102 transitions, 934 flow [2024-06-21 15:50:25,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:50:25,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:50:25,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-21 15:50:25,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255131964809384 [2024-06-21 15:50:25,522 INFO L175 Difference]: Start difference. First operand has 149 places, 85 transitions, 590 flow. Second operand 11 states and 111 transitions. [2024-06-21 15:50:25,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 102 transitions, 934 flow [2024-06-21 15:50:25,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 102 transitions, 896 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-21 15:50:25,576 INFO L231 Difference]: Finished difference. Result has 146 places, 76 transitions, 516 flow [2024-06-21 15:50:25,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=516, PETRI_PLACES=146, PETRI_TRANSITIONS=76} [2024-06-21 15:50:25,577 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 116 predicate places. [2024-06-21 15:50:25,577 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 76 transitions, 516 flow [2024-06-21 15:50:25,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:25,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:50:25,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:50:25,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-21 15:50:25,577 INFO L420 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:50:25,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:50:25,577 INFO L85 PathProgramCache]: Analyzing trace with hash 226885359, now seen corresponding path program 28 times [2024-06-21 15:50:25,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:50:25,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292455409] [2024-06-21 15:50:25,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:50:25,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:50:25,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:50:27,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:50:27,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:50:27,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292455409] [2024-06-21 15:50:27,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292455409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:50:27,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:50:27,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:50:27,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126360280] [2024-06-21 15:50:27,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:50:27,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:50:27,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:50:27,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:50:27,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:50:27,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:50:27,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 76 transitions, 516 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:27,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:50:27,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:50:27,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:50:27,809 INFO L124 PetriNetUnfolderBase]: 202/426 cut-off events. [2024-06-21 15:50:27,810 INFO L125 PetriNetUnfolderBase]: For 32691/32691 co-relation queries the response was YES. [2024-06-21 15:50:27,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2337 conditions, 426 events. 202/426 cut-off events. For 32691/32691 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1839 event pairs, 63 based on Foata normal form. 6/431 useless extension candidates. Maximal degree in co-relation 2277. Up to 354 conditions per place. [2024-06-21 15:50:27,812 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 63 selfloop transitions, 16 changer transitions 8/89 dead transitions. [2024-06-21 15:50:27,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 89 transitions, 722 flow [2024-06-21 15:50:27,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:50:27,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:50:27,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 103 transitions. [2024-06-21 15:50:27,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3020527859237537 [2024-06-21 15:50:27,812 INFO L175 Difference]: Start difference. First operand has 146 places, 76 transitions, 516 flow. Second operand 11 states and 103 transitions. [2024-06-21 15:50:27,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 89 transitions, 722 flow [2024-06-21 15:50:27,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 89 transitions, 670 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-21 15:50:27,884 INFO L231 Difference]: Finished difference. Result has 137 places, 74 transitions, 487 flow [2024-06-21 15:50:27,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=487, PETRI_PLACES=137, PETRI_TRANSITIONS=74} [2024-06-21 15:50:27,885 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 107 predicate places. [2024-06-21 15:50:27,885 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 74 transitions, 487 flow [2024-06-21 15:50:27,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:27,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:50:27,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:50:27,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-21 15:50:27,885 INFO L420 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:50:27,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:50:27,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1058521711, now seen corresponding path program 29 times [2024-06-21 15:50:27,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:50:27,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401948522] [2024-06-21 15:50:27,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:50:27,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:50:27,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:50:29,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:50:29,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:50:29,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401948522] [2024-06-21 15:50:29,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401948522] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:50:29,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:50:29,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:50:29,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193199099] [2024-06-21 15:50:29,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:50:29,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:50:29,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:50:29,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:50:29,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:50:29,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:50:29,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 74 transitions, 487 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:29,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:50:29,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:50:29,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:50:29,826 INFO L124 PetriNetUnfolderBase]: 196/416 cut-off events. [2024-06-21 15:50:29,826 INFO L125 PetriNetUnfolderBase]: For 29962/29962 co-relation queries the response was YES. [2024-06-21 15:50:29,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2239 conditions, 416 events. 196/416 cut-off events. For 29962/29962 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1796 event pairs, 60 based on Foata normal form. 6/421 useless extension candidates. Maximal degree in co-relation 2183. Up to 326 conditions per place. [2024-06-21 15:50:29,828 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 58 selfloop transitions, 11 changer transitions 18/89 dead transitions. [2024-06-21 15:50:29,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 89 transitions, 697 flow [2024-06-21 15:50:29,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:50:29,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:50:29,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 103 transitions. [2024-06-21 15:50:29,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3020527859237537 [2024-06-21 15:50:29,828 INFO L175 Difference]: Start difference. First operand has 137 places, 74 transitions, 487 flow. Second operand 11 states and 103 transitions. [2024-06-21 15:50:29,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 89 transitions, 697 flow [2024-06-21 15:50:29,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 89 transitions, 657 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-21 15:50:29,876 INFO L231 Difference]: Finished difference. Result has 134 places, 67 transitions, 439 flow [2024-06-21 15:50:29,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=439, PETRI_PLACES=134, PETRI_TRANSITIONS=67} [2024-06-21 15:50:29,876 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 104 predicate places. [2024-06-21 15:50:29,876 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 67 transitions, 439 flow [2024-06-21 15:50:29,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:29,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:50:29,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:50:29,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-21 15:50:29,877 INFO L420 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:50:29,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:50:29,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1260588895, now seen corresponding path program 3 times [2024-06-21 15:50:29,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:50:29,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616835031] [2024-06-21 15:50:29,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:50:29,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:50:29,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:50:31,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:50:31,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:50:31,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616835031] [2024-06-21 15:50:31,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616835031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:50:31,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:50:31,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:50:31,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650503284] [2024-06-21 15:50:31,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:50:31,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:50:31,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:50:31,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:50:31,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:50:31,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:50:31,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 67 transitions, 439 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:31,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:50:31,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:50:31,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:50:31,902 INFO L124 PetriNetUnfolderBase]: 160/344 cut-off events. [2024-06-21 15:50:31,902 INFO L125 PetriNetUnfolderBase]: For 21359/21359 co-relation queries the response was YES. [2024-06-21 15:50:31,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1619 conditions, 344 events. 160/344 cut-off events. For 21359/21359 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1380 event pairs, 51 based on Foata normal form. 8/351 useless extension candidates. Maximal degree in co-relation 1565. Up to 270 conditions per place. [2024-06-21 15:50:31,904 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 53 selfloop transitions, 11 changer transitions 13/79 dead transitions. [2024-06-21 15:50:31,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 79 transitions, 623 flow [2024-06-21 15:50:31,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:50:31,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:50:31,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 101 transitions. [2024-06-21 15:50:31,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2961876832844575 [2024-06-21 15:50:31,905 INFO L175 Difference]: Start difference. First operand has 134 places, 67 transitions, 439 flow. Second operand 11 states and 101 transitions. [2024-06-21 15:50:31,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 79 transitions, 623 flow [2024-06-21 15:50:31,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 79 transitions, 573 flow, removed 10 selfloop flow, removed 12 redundant places. [2024-06-21 15:50:31,927 INFO L231 Difference]: Finished difference. Result has 124 places, 61 transitions, 384 flow [2024-06-21 15:50:31,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=384, PETRI_PLACES=124, PETRI_TRANSITIONS=61} [2024-06-21 15:50:31,927 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 94 predicate places. [2024-06-21 15:50:31,927 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 61 transitions, 384 flow [2024-06-21 15:50:31,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:31,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:50:31,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:50:31,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-21 15:50:31,927 INFO L420 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:50:31,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:50:31,928 INFO L85 PathProgramCache]: Analyzing trace with hash 101867621, now seen corresponding path program 30 times [2024-06-21 15:50:31,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:50:31,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386244907] [2024-06-21 15:50:31,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:50:31,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:50:31,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:50:33,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:50:33,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:50:33,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386244907] [2024-06-21 15:50:33,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386244907] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:50:33,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:50:33,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:50:33,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301167206] [2024-06-21 15:50:33,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:50:33,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:50:33,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:50:33,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:50:33,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:50:33,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:50:33,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 61 transitions, 384 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:33,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:50:33,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:50:33,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:50:33,532 INFO L124 PetriNetUnfolderBase]: 149/323 cut-off events. [2024-06-21 15:50:33,532 INFO L125 PetriNetUnfolderBase]: For 15920/15920 co-relation queries the response was YES. [2024-06-21 15:50:33,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1466 conditions, 323 events. 149/323 cut-off events. For 15920/15920 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1268 event pairs, 46 based on Foata normal form. 6/328 useless extension candidates. Maximal degree in co-relation 1417. Up to 235 conditions per place. [2024-06-21 15:50:33,534 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 45 selfloop transitions, 7 changer transitions 21/75 dead transitions. [2024-06-21 15:50:33,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 75 transitions, 564 flow [2024-06-21 15:50:33,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:50:33,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:50:33,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 101 transitions. [2024-06-21 15:50:33,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2961876832844575 [2024-06-21 15:50:33,535 INFO L175 Difference]: Start difference. First operand has 124 places, 61 transitions, 384 flow. Second operand 11 states and 101 transitions. [2024-06-21 15:50:33,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 75 transitions, 564 flow [2024-06-21 15:50:33,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 75 transitions, 522 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-21 15:50:33,554 INFO L231 Difference]: Finished difference. Result has 116 places, 51 transitions, 312 flow [2024-06-21 15:50:33,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=312, PETRI_PLACES=116, PETRI_TRANSITIONS=51} [2024-06-21 15:50:33,555 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 86 predicate places. [2024-06-21 15:50:33,555 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 51 transitions, 312 flow [2024-06-21 15:50:33,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:33,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:50:33,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:50:33,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-21 15:50:33,555 INFO L420 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:50:33,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:50:33,555 INFO L85 PathProgramCache]: Analyzing trace with hash 792122219, now seen corresponding path program 31 times [2024-06-21 15:50:33,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:50:33,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508654849] [2024-06-21 15:50:33,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:50:33,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:50:33,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:50:35,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:50:35,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:50:35,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508654849] [2024-06-21 15:50:35,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508654849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:50:35,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:50:35,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:50:35,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025339488] [2024-06-21 15:50:35,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:50:35,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:50:35,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:50:35,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:50:35,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:50:35,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:50:35,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 51 transitions, 312 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:35,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:50:35,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:50:35,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:50:35,793 INFO L124 PetriNetUnfolderBase]: 131/285 cut-off events. [2024-06-21 15:50:35,794 INFO L125 PetriNetUnfolderBase]: For 13709/13709 co-relation queries the response was YES. [2024-06-21 15:50:35,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1276 conditions, 285 events. 131/285 cut-off events. For 13709/13709 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1055 event pairs, 41 based on Foata normal form. 6/290 useless extension candidates. Maximal degree in co-relation 1231. Up to 206 conditions per place. [2024-06-21 15:50:35,796 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 36 selfloop transitions, 3 changer transitions 25/66 dead transitions. [2024-06-21 15:50:35,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 66 transitions, 474 flow [2024-06-21 15:50:35,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:50:35,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:50:35,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 100 transitions. [2024-06-21 15:50:35,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2932551319648094 [2024-06-21 15:50:35,797 INFO L175 Difference]: Start difference. First operand has 116 places, 51 transitions, 312 flow. Second operand 11 states and 100 transitions. [2024-06-21 15:50:35,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 66 transitions, 474 flow [2024-06-21 15:50:35,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 66 transitions, 442 flow, removed 9 selfloop flow, removed 13 redundant places. [2024-06-21 15:50:35,807 INFO L231 Difference]: Finished difference. Result has 100 places, 40 transitions, 230 flow [2024-06-21 15:50:35,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=230, PETRI_PLACES=100, PETRI_TRANSITIONS=40} [2024-06-21 15:50:35,808 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 70 predicate places. [2024-06-21 15:50:35,808 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 40 transitions, 230 flow [2024-06-21 15:50:35,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:35,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:50:35,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:50:35,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2024-06-21 15:50:35,808 INFO L420 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:50:35,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:50:35,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1634620419, now seen corresponding path program 32 times [2024-06-21 15:50:35,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:50:35,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393263685] [2024-06-21 15:50:35,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:50:35,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:50:35,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:50:37,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:50:37,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:50:37,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393263685] [2024-06-21 15:50:37,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393263685] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:50:37,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:50:37,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:50:37,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808737451] [2024-06-21 15:50:37,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:50:37,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:50:37,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:50:37,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:50:37,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:50:37,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:50:37,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 40 transitions, 230 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:37,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:50:37,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:50:37,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:50:37,767 INFO L124 PetriNetUnfolderBase]: 93/204 cut-off events. [2024-06-21 15:50:37,767 INFO L125 PetriNetUnfolderBase]: For 6132/6132 co-relation queries the response was YES. [2024-06-21 15:50:37,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 762 conditions, 204 events. 93/204 cut-off events. For 6132/6132 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 665 event pairs, 24 based on Foata normal form. 6/209 useless extension candidates. Maximal degree in co-relation 725. Up to 135 conditions per place. [2024-06-21 15:50:37,768 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 32 selfloop transitions, 10 changer transitions 11/55 dead transitions. [2024-06-21 15:50:37,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 55 transitions, 374 flow [2024-06-21 15:50:37,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:50:37,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:50:37,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 101 transitions. [2024-06-21 15:50:37,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2961876832844575 [2024-06-21 15:50:37,769 INFO L175 Difference]: Start difference. First operand has 100 places, 40 transitions, 230 flow. Second operand 11 states and 101 transitions. [2024-06-21 15:50:37,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 55 transitions, 374 flow [2024-06-21 15:50:37,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 55 transitions, 334 flow, removed 13 selfloop flow, removed 16 redundant places. [2024-06-21 15:50:37,773 INFO L231 Difference]: Finished difference. Result has 79 places, 37 transitions, 204 flow [2024-06-21 15:50:37,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=204, PETRI_PLACES=79, PETRI_TRANSITIONS=37} [2024-06-21 15:50:37,773 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 49 predicate places. [2024-06-21 15:50:37,773 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 37 transitions, 204 flow [2024-06-21 15:50:37,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:37,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:50:37,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:50:37,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2024-06-21 15:50:37,773 INFO L420 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:50:37,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:50:37,774 INFO L85 PathProgramCache]: Analyzing trace with hash -414949501, now seen corresponding path program 33 times [2024-06-21 15:50:37,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:50:37,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98814096] [2024-06-21 15:50:37,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:50:37,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:50:37,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:50:39,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:50:39,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:50:39,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98814096] [2024-06-21 15:50:39,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98814096] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:50:39,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:50:39,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:50:39,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914910603] [2024-06-21 15:50:39,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:50:39,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:50:39,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:50:39,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:50:39,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:50:39,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:50:39,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 37 transitions, 204 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:39,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:50:39,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:50:39,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:50:39,737 INFO L124 PetriNetUnfolderBase]: 83/186 cut-off events. [2024-06-21 15:50:39,737 INFO L125 PetriNetUnfolderBase]: For 3446/3446 co-relation queries the response was YES. [2024-06-21 15:50:39,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 656 conditions, 186 events. 83/186 cut-off events. For 3446/3446 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 581 event pairs, 22 based on Foata normal form. 6/191 useless extension candidates. Maximal degree in co-relation 628. Up to 117 conditions per place. [2024-06-21 15:50:39,738 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 28 selfloop transitions, 8 changer transitions 12/50 dead transitions. [2024-06-21 15:50:39,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 50 transitions, 328 flow [2024-06-21 15:50:39,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:50:39,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:50:39,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 93 transitions. [2024-06-21 15:50:39,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3 [2024-06-21 15:50:39,739 INFO L175 Difference]: Start difference. First operand has 79 places, 37 transitions, 204 flow. Second operand 10 states and 93 transitions. [2024-06-21 15:50:39,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 50 transitions, 328 flow [2024-06-21 15:50:39,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 50 transitions, 302 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-21 15:50:39,742 INFO L231 Difference]: Finished difference. Result has 73 places, 33 transitions, 179 flow [2024-06-21 15:50:39,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=179, PETRI_PLACES=73, PETRI_TRANSITIONS=33} [2024-06-21 15:50:39,742 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 43 predicate places. [2024-06-21 15:50:39,743 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 33 transitions, 179 flow [2024-06-21 15:50:39,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:39,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:50:39,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:50:39,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2024-06-21 15:50:39,743 INFO L420 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:50:39,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:50:39,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1805495829, now seen corresponding path program 34 times [2024-06-21 15:50:39,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:50:39,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29187009] [2024-06-21 15:50:39,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:50:39,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:50:39,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:50:41,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:50:41,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:50:41,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29187009] [2024-06-21 15:50:41,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29187009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:50:41,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:50:41,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:50:41,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094094095] [2024-06-21 15:50:41,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:50:41,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:50:41,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:50:41,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:50:41,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:50:41,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:50:41,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 33 transitions, 179 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:41,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:50:41,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:50:41,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:50:41,597 INFO L124 PetriNetUnfolderBase]: 69/160 cut-off events. [2024-06-21 15:50:41,597 INFO L125 PetriNetUnfolderBase]: For 2886/2886 co-relation queries the response was YES. [2024-06-21 15:50:41,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 568 conditions, 160 events. 69/160 cut-off events. For 2886/2886 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 468 event pairs, 18 based on Foata normal form. 6/165 useless extension candidates. Maximal degree in co-relation 542. Up to 91 conditions per place. [2024-06-21 15:50:41,598 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 23 selfloop transitions, 6 changer transitions 15/46 dead transitions. [2024-06-21 15:50:41,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 46 transitions, 295 flow [2024-06-21 15:50:41,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:50:41,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:50:41,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 91 transitions. [2024-06-21 15:50:41,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29354838709677417 [2024-06-21 15:50:41,598 INFO L175 Difference]: Start difference. First operand has 73 places, 33 transitions, 179 flow. Second operand 10 states and 91 transitions. [2024-06-21 15:50:41,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 46 transitions, 295 flow [2024-06-21 15:50:41,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 46 transitions, 271 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-21 15:50:41,600 INFO L231 Difference]: Finished difference. Result has 67 places, 28 transitions, 147 flow [2024-06-21 15:50:41,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=147, PETRI_PLACES=67, PETRI_TRANSITIONS=28} [2024-06-21 15:50:41,601 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 37 predicate places. [2024-06-21 15:50:41,601 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 28 transitions, 147 flow [2024-06-21 15:50:41,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:41,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:50:41,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:50:41,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2024-06-21 15:50:41,601 INFO L420 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:50:41,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:50:41,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1468438693, now seen corresponding path program 35 times [2024-06-21 15:50:41,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:50:41,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516328476] [2024-06-21 15:50:41,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:50:41,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:50:41,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:50:43,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:50:43,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:50:43,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516328476] [2024-06-21 15:50:43,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516328476] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:50:43,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:50:43,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:50:43,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688130731] [2024-06-21 15:50:43,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:50:43,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:50:43,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:50:43,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:50:43,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:50:43,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:50:43,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 28 transitions, 147 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:43,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:50:43,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:50:43,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:50:43,569 INFO L124 PetriNetUnfolderBase]: 53/128 cut-off events. [2024-06-21 15:50:43,570 INFO L125 PetriNetUnfolderBase]: For 2146/2146 co-relation queries the response was YES. [2024-06-21 15:50:43,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 459 conditions, 128 events. 53/128 cut-off events. For 2146/2146 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 329 event pairs, 16 based on Foata normal form. 6/133 useless extension candidates. Maximal degree in co-relation 436. Up to 64 conditions per place. [2024-06-21 15:50:43,571 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 18 selfloop transitions, 4 changer transitions 18/42 dead transitions. [2024-06-21 15:50:43,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 42 transitions, 257 flow [2024-06-21 15:50:43,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:50:43,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:50:43,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 96 transitions. [2024-06-21 15:50:43,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28152492668621704 [2024-06-21 15:50:43,572 INFO L175 Difference]: Start difference. First operand has 67 places, 28 transitions, 147 flow. Second operand 11 states and 96 transitions. [2024-06-21 15:50:43,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 42 transitions, 257 flow [2024-06-21 15:50:43,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 42 transitions, 235 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-21 15:50:43,574 INFO L231 Difference]: Finished difference. Result has 60 places, 22 transitions, 108 flow [2024-06-21 15:50:43,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=108, PETRI_PLACES=60, PETRI_TRANSITIONS=22} [2024-06-21 15:50:43,575 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 30 predicate places. [2024-06-21 15:50:43,575 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 22 transitions, 108 flow [2024-06-21 15:50:43,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:43,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:50:43,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:50:43,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2024-06-21 15:50:43,576 INFO L420 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:50:43,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:50:43,576 INFO L85 PathProgramCache]: Analyzing trace with hash -279042667, now seen corresponding path program 36 times [2024-06-21 15:50:43,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:50:43,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713770371] [2024-06-21 15:50:43,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:50:43,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:50:43,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:50:44,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:50:44,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:50:44,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713770371] [2024-06-21 15:50:44,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713770371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:50:44,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:50:44,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:50:44,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665394386] [2024-06-21 15:50:44,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:50:44,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:50:44,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:50:44,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:50:44,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:50:44,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-21 15:50:44,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 22 transitions, 108 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:44,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:50:44,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-21 15:50:44,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:50:44,792 INFO L124 PetriNetUnfolderBase]: 24/65 cut-off events. [2024-06-21 15:50:44,792 INFO L125 PetriNetUnfolderBase]: For 672/672 co-relation queries the response was YES. [2024-06-21 15:50:44,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 65 events. 24/65 cut-off events. For 672/672 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 93 event pairs, 1 based on Foata normal form. 6/70 useless extension candidates. Maximal degree in co-relation 166. Up to 32 conditions per place. [2024-06-21 15:50:44,793 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 0 selfloop transitions, 0 changer transitions 28/28 dead transitions. [2024-06-21 15:50:44,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 28 transitions, 142 flow [2024-06-21 15:50:44,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:50:44,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:50:44,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 77 transitions. [2024-06-21 15:50:44,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24838709677419354 [2024-06-21 15:50:44,793 INFO L175 Difference]: Start difference. First operand has 60 places, 22 transitions, 108 flow. Second operand 10 states and 77 transitions. [2024-06-21 15:50:44,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 28 transitions, 142 flow [2024-06-21 15:50:44,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 28 transitions, 114 flow, removed 1 selfloop flow, removed 14 redundant places. [2024-06-21 15:50:44,794 INFO L231 Difference]: Finished difference. Result has 43 places, 0 transitions, 0 flow [2024-06-21 15:50:44,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=43, PETRI_TRANSITIONS=0} [2024-06-21 15:50:44,794 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 13 predicate places. [2024-06-21 15:50:44,794 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 0 transitions, 0 flow [2024-06-21 15:50:44,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:44,797 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-21 15:50:44,797 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-21 15:50:44,797 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-21 15:50:44,798 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-21 15:50:44,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2024-06-21 15:50:44,798 INFO L445 BasicCegarLoop]: Path program histogram: [42, 36, 26, 23, 14, 14, 7, 7, 6, 6, 5, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:50:44,801 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-21 15:50:44,801 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-21 15:50:44,805 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-21 15:50:44,805 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-21 15:50:44,806 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 03:50:44 BasicIcfg [2024-06-21 15:50:44,806 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-21 15:50:44,807 INFO L158 Benchmark]: Toolchain (without parser) took 460279.34ms. Allocated memory was 165.7MB in the beginning and 2.1GB in the end (delta: 1.9GB). Free memory was 90.6MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 808.0MB. Max. memory is 16.1GB. [2024-06-21 15:50:44,807 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 117.4MB. Free memory is still 80.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 15:50:44,807 INFO L158 Benchmark]: Witness Parser took 0.49ms. Allocated memory is still 165.7MB. Free memory is still 95.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 15:50:44,808 INFO L158 Benchmark]: CACSL2BoogieTranslator took 754.58ms. Allocated memory is still 165.7MB. Free memory was 90.3MB in the beginning and 120.5MB in the end (delta: -30.2MB). Peak memory consumption was 27.8MB. Max. memory is 16.1GB. [2024-06-21 15:50:44,808 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.40ms. Allocated memory is still 165.7MB. Free memory was 120.3MB in the beginning and 116.3MB in the end (delta: 4.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-21 15:50:44,808 INFO L158 Benchmark]: Boogie Preprocessor took 51.17ms. Allocated memory is still 165.7MB. Free memory was 116.3MB in the beginning and 112.9MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-21 15:50:44,809 INFO L158 Benchmark]: RCFGBuilder took 793.01ms. Allocated memory is still 165.7MB. Free memory was 112.0MB in the beginning and 129.1MB in the end (delta: -17.1MB). Peak memory consumption was 70.7MB. Max. memory is 16.1GB. [2024-06-21 15:50:44,809 INFO L158 Benchmark]: TraceAbstraction took 458590.33ms. Allocated memory was 165.7MB in the beginning and 2.1GB in the end (delta: 1.9GB). Free memory was 129.1MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 845.9MB. Max. memory is 16.1GB. [2024-06-21 15:50:44,810 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 117.4MB. Free memory is still 80.3MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.49ms. Allocated memory is still 165.7MB. Free memory is still 95.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 754.58ms. Allocated memory is still 165.7MB. Free memory was 90.3MB in the beginning and 120.5MB in the end (delta: -30.2MB). Peak memory consumption was 27.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 77.40ms. Allocated memory is still 165.7MB. Free memory was 120.3MB in the beginning and 116.3MB in the end (delta: 4.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.17ms. Allocated memory is still 165.7MB. Free memory was 116.3MB in the beginning and 112.9MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 793.01ms. Allocated memory is still 165.7MB. Free memory was 112.0MB in the beginning and 129.1MB in the end (delta: -17.1MB). Peak memory consumption was 70.7MB. Max. memory is 16.1GB. * TraceAbstraction took 458590.33ms. Allocated memory was 165.7MB in the beginning and 2.1GB in the end (delta: 1.9GB). Free memory was 129.1MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 845.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 829]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 830]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 50 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: 458.5s, OverallIterations: 225, TraceHistogramMax: 1, PathProgramHistogramMax: 42, EmptinessCheckTime: 0.0s, AutomataDifference: 212.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 11903 SdHoareTripleChecker+Valid, 58.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10351 mSDsluCounter, 10655 SdHoareTripleChecker+Invalid, 50.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9147 mSDsCounter, 2814 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 88279 IncrementalHoareTripleChecker+Invalid, 91093 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2814 mSolverCounterUnsat, 1508 mSDtfsCounter, 88279 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2576 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 2557 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5238 ImplicationChecksByTransitivity, 77.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4487occurred in iteration=132, InterpolantAutomatonStates: 2207, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 242.4s InterpolantComputationTime, 3805 NumberOfCodeBlocks, 3805 NumberOfCodeBlocksAsserted, 225 NumberOfCheckSat, 3580 ConstructedInterpolants, 0 QuantifiedInterpolants, 171247 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 225 InterpolantComputations, 225 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! [2024-06-21 15:50:44,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE